Welcome scientists; Chemists, Physicists and I SUPPOSE Biologists too!  Wink




Image from:  http://www.hydrogen-fuel.org/hydrogen_fuel_greenage-small.jpg

Isaac Asimov - The Feeling of Power

Sixty Symbols of Physics

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How to get in touch with Mr. Riffel

In School:

   Room 223
   Lunch help available - see the chalkboard above the fume hood.

Outside of School:

   Email address: kriffel at gscs dot sk dot ca

Tutor List

Mr. Riffel's Tutor List






Science 9/10

Chemistry 20/30

Physics 20/30

Biology 20/30

Math - all levels







Science Class Success Tools

BJM Science Portfolio Tools

BJM Science Lab Index Sheet.doc
BJM Peer Review Sheet.doc

BJM Science Self Check Portfolio Tools

Search the Biology, Physics or Chemistry Curriculum

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Search our Biology Curriculum

Search our Chemistry Curriculum

Search our Physics Curriculum

You must select EITHER Biology, Chemistry OR Physics

Browse the Biology Curriculum - Biology 20/30: Curriculum Guide

Browse the Physics Curriculum - Physics 20/30: Curriculum Guide

Browse the Chemistry Curriculum - Chemistry 20/30: Curriculum Guide

Work & Power 11.2 Class Answers

Here they are: 11.2 Answers.pdf

Physics 30 Scientific Literacy

Here is the link to the first part of your literacy project: Scientific Literacy Description - Physics 30 - 2013-2014 - S1 V5.pdf

Here are the links for your research review.  Articles (be sure to Refine by Section and choose 'Original Research') must come from here and be published within the last year:

General Physics - http://www.sciencemag.org/cgi/collection/physics
Applied Physics - http://www.sciencemag.org/cgi/collection/app_physics
Material Science - http://www.sciencemag.org/cgi/collection/mat_sci
Planetary Science - http://www.sciencemag.org/cgi/collection/planet_sci
Atmospheric Science - http://www.sciencemag.org/cgi/collection/atmos
Geophysics - http://www.sciencemag.org/cgi/collection/geochem_phys
Astronomy - http://www.sciencemag.org/cgi/collection/astronomy
This journal (Science Magazine) is available in print at the University of Saskatchewan Main Branch or Saskatoon Public Library - FRANCES MORRISON LIBRARY 311 - 23rd Street East, (306) 975-7558 or articles can be purchased online.  I will check with our library to see if we have digital access.  Here is the link to the library location:  http://www.saskatoonlibrary.ca/pdf/branchesandhours.pdf.  Remember that you need to include a printed (or digital) copy of the article with your review.

Remember to be sure to post a comment on this blog entry saying what article you are using as there are no duplicates allowed.  The first person to include the title in a comment gets to use that article.  If you do NOT add a comment and somebody else has also reviewed that article, you will be required to review another article.

Here is how to reference a journal APA Style (both quoting and references):


Please post your first name only and the title of the article you are using in the comments (If you cannot see a comments section to post with below then you have to click on the title of this article - Physics 30 Scientific Literacy).

A few sample literacy projects from former students:
Exemplar 1.pdf
Exemplar 2.pdf

Lab Exam Placemat Study Tool

Free body diagram practice answers

Here are the answers to the FBD practice sheets: FBD practice answer key.pdf

The Hidden Water We Use

Virtual Algebra Tiles

Unit 1 White Out Exam

Physics 30 Final Outline

Final Project Introduction

This final project will form a substantial portion of your final grade.  As such, please be sure to follow all instructions and requirements.


Project requirements

·         Working code

-         See past resources

·         Proper comments

-         http://www.cwu.edu/~gellenbe/javastyle/index.html

·         Proper variable names

-         http://www.cwu.edu/~gellenbe/javastyle/index.html

·         Proper white space and formatting

-         http://www.cwu.edu/~gellenbe/javastyle/index.html and http://mbreen.com/javastyle.html

·         Proper testing evidence

-         Output copied to a testing file in your working directory

-         Must test all functionality AND incorrect inputs

-         It is the programmers job to PROVE that their code works in ALL cases


 All projects (each of you will be working on a different project) will require the implementation of a command line menu system.
The command line menu system will be programmed together in class on day 1 and we will create a new project in a new directory together.

Pseudocode (enter it into your program neatly)


WHILE input is not "Q"

Display the menu
Get user input
IF input is 'A'
Call method A
ELSE IF input is 'B'
Call method B
Display error message

Final Projects Description (Final Projects.doc) - This file will be updated with the remaining details as they become available.

Final Project Starting Code (FinalProject.java) - this code creates a command line menu system and gets the user choice.  It should be used in all of your final projects.

Project 3 Details - convertToBinaryFromConsole

Write a program to get a string from the user (typed in) and convert that typed in string to binary.  The output of the program is as follows:


Please enter a string to convert to binary: Ryan

Ryan, [01010010,01111001,01100001,01101110]

Please enter a string to convert to binary: quiT



The program continues doing this until the user enters any variant of the string "QUIT", "Quit", "quit", "qUiT", etc.

The method System.in.read will allow you to get input from the user.

Project 2 Details - ConvertBinaryToText

Given a file name as an argument
Open that file
Convert all the binary characters into strings and display them

The format of the file is as such and there can be any number of binary characters and any number of strings:


Display the strings as such:

string1, string2, string3

Reading from a file - Look at FileReader, inputStream
Converting a binary string to characters - Use Integer.parseInt()

Essentially this is the opposite of project 1.

Dec 10th Lunar Eclipse


Project 1 Details - convertToBinary

Here are the details of project 1 - convertToBinary

convertToBinary.java for you to start with.  Be sure to edit in notepad++.

Create a program that takes strings from the arguments passed in to the main method (args[]) and converts them to binary.

The results need to be printed to the screen and saved in a file.

The format for printing should be exactly as such with each name on a new line:

Ryan, [01010010,01111001,01100001,01101110]

The format for saving to a file should be exactly as such with each name on a new line:


Useful resources that you will need to access.  You will need to read the tutorial at the last link.

http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html (toBinaryString method)

You are REQUIRED to produce verbose pseudocode for this project.

Unit 2 - Languages, Programming Fundamentals, Design and Testing

Here are the resources we will use to learn how to program and how to program in Java:


You will need an account on CodingBat and in your preferences you will need to add my email: kriffel@gscs.sk.ca under the Teacher Share section so I can monitor your practice work.

We need to start putting our algorithm skills into coding skills.

Week 1 Resources

Readings:  Learning the Java Language - Language Basics - http://download.oracle.com/javase/tutorial/java/nutsandbolts/index.html

Practice: CodingBat - Warmup-1      Try to get the answers without looking at the answers.  Remember, there are no marks for completing these and simply copying the answers likely won't help you learn much and you will struggle immensely with the assignments and projects.  In other words, you won't learn how to program and that would be disappointing for you and for me.

Week 2 - 5 practice and resources

It is an expectation that you are doing the resource reading both inside and outside of class.  If you do need help in this class, it is likely that you need more help learning how to program than help reading.  If you do need help reading the technical documentation, please ask.

Some of you need help with primitive data types - creating variables
Resources: http://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html

Some of you need help with conditionals: IF statements
Resources: http://docs.oracle.com/javase/tutorial/java/nutsandbolts/if.html, http://codingbat.com/doc/ifboolean.html

Practice: CodingBat - Array-1
Resources: http://codingbat.com/doc/array.html, http://codingbat.com/doc/loop.html

Practice: CodingBat - String-1
Resources: http://codingbat.com/doc/string.html,

Practice: CodingBat - Warmup-2
Resources: http://codingbat.com/doc/loop.html

Computer Build

Right click on the following link and save this assignment to your student account on your M drive:  computer build worksheet.doc

Asimov - The Feeling of Power

Computer Dissection Guide

Here are some links to help you through this process.

Computer Manual: vt5500gug.pdf


Coverage Expectations:  BT1, CN2, CN3, CN4, CN7, CN8, CN9, CN10, CN11,
CN12, CN13, CN14, CN17, DIMM1, DIMM2, FN1, FN2, JP2, SL1, SL2, SL3, SLT1, U3,
U8, U14, U21, U24, Power Supply, CPU, PCI Network Card, PCI Video Card, RAM,
Heat Sink, Difference between BT1 and Power Supply, Floppy Disk, CD, Hard Disk
Sample Entry (gives you the level of detail expected): Computer Dissection - Example.doc

Performance Exam Question Types: what is this, where does this go, what goes here, what does it do,
how is it connected, what is the capacity of this component, what type of component is this

Computer Parts Video: Computer Parts.wmv

Related Training: http://www.siast.sk.ca/programs_courses_descriptions/CENG.shtmlhttp://www.siast.sk.ca/programs_courses_descriptions/ELIE.shtmlhttp://www.siast.sk.ca/programs_courses_descriptions/ESE.shtmlhttp://www.siast.sk.ca/programs_courses_descriptions/ELOE.shtmlhttp://explore.usask.ca/programs/ar/computersciencehttp://explore.usask.ca/programs/en/computerhttp://explore.usask.ca/programs/en/electricalhttp://explore.usask.ca/programs/en/engineeringphysics

Computer Science 20/30 Outline

Class Derived Light Answers

Paraphrasing, Quoting and Citing References

Here is some help regarding properly paraphrasing, quoting, and references

Here is how to determine if you have paraphrased correctly

Here is how to include a quote from a book (a citation) in APA style including how to format your references for your reference page:

Intensity Practice

Properties of Light Practice

Group Lab Place Matting Activity

Speed of Sound and Intensity Practice

Strings, Beat Frequency and Doppler Practice

Sound White Out Exam

Resonance Practice Answers

Waves White Out Exam

Waves Answer Set

Literacy Project - Sample Book Milestone

Build Demo Presentations

Electricity Answers From the Text Assigned Problems

Electrostatic Force

Chp 20

9) 1.6 x 10^4 N

10) 3.0 x 10^-6 C

48) Fnet = 98N East

12) Fbona = 0.18 N to right, Fcona = .1125N to left, Fnet = 0.068 N to right

P, V, I

Chapter 21

21) 4.5 J

22) 1.7 x 10^7 J

29) 3.2 x 10^-19 C, 2 electrons

36) V/m = .................. = N/C  Be able to prove

44) The direction of the force on a positive charge placed in the field determines the direction

47) See examples in notes or text

49) Electric Potential Engergy: Joule, Electric Potential: Volt

59) V = ..........kg*m^2/s^2*C  Be able to prove.

72) Be able to draw the resulting force of three particles

77) 1.4 J

78) -7.2 x 10^-17 J

79) 1.0 x 10^2 C


Chapter 22

1) 63 W

2) 24 W

3) 0.60 A

4) 2.5 x 10^4 J


Resistance and Circuits

Chapter 22

6) 0.36 A

7) 1.2 x 10^2 V

8) 1.5 x 10^4 Ohms

9) 6.0 x 10^1 W

10) a) 0.60 A b) 2.1 x 10^2 Ohms

12) 4.80 A

13) 53 Ohms

14) #12 = 60.0 V, #13 = 4.5 V

15) Look up the symbols in your notes

16) Look up the symbols in your notes

Series Circuits

Chapter 23

1) 2 A

2) 3 A

3) a) increase, b) decrease, c) no. it does not depend on the resistance

4) a) 2 x 10^3 Ohms b) 2 x 10^2 Ohms

6) Resistor B has failed.  It has infinite resistance and the battery voltage appears across it

7) a) 66.7 mA  b) 36.5 V c) A= 1.13 W, B = 1.30 W d) Yes, the law of conservatio nof energy states that energy cannot be created or destroyed; therefore, the rate at whcih energy is converted, or power dissipated, will equal the sum of all parts

10) 7.46 V

12) a) 11.9 kiloohms b) 1.0 x 10^-3 A c) V1 = 3.3V, V2 = 4.7V, V3 = 3.9V d) 11.9V

Parallel Circuits & Equivalent Resistance

Chapter 23

15) a) 5.00 Ohms b) 6.00 A c) 2.00 A

16) a) 20.0 Ohms b) 0.600 A c) I1 = 0.100A I2 = 0.200 A I3 = 0.300A

17) a) gets smaller b) gets larger c) Remains the same.  Currents are independent

18) 240 Ohms in parallel with the 150 Ohm resistance

21) 2.9 A

22) 810 mA.  Current is the same everywhere in a series circuit

25) 0.54 A

26) 11 lights in series will burn brighter as P = I^2* R

27) All 12 lights will be in series and be equally bright

28) The shorted light will reduce the the resistance of the parallel path to near zero and as such will take next to no voltage.  The 11 series lights will burn with equal intensity but will be brighter.  The two parallel lights will not be on.

29) Bulbs 2 and 3 are equal in brightness but dimmer than bulb 1

30) 0.6A

31) Both dim equally.  The current in each is reduced by the same amount.

32) 8.0 V

33) No.  Identical bulbs in series would have identical voltage drops since their currents are the same.

81) a) 50.0 Ohms b) 0.50 A c) 25 Ohms = 6.25 Watts, 30 Ohms = 1.9 Watts, 20 Ohms = 1.2 Watts, 10 Ohms = 0.62 Watts, 40 Ohms = 2.25 Watts.  The 25 Ohm resistor is hottest, the 10 Ohm resistor is coolest.




Set 2 Answers - Electricity

Unit 1 Dynamics White Out Exam

Unit 1 Dynamics White Out Exam

Glencoe Physics Text Access

Note:  The access code has changed.  It is now FFA99CA633

Go to http://glencoe.com/ose/ and enter the code for BJM student access.

Physemistry 20 - Physics Outline/Review

Physemistry 20 - Chem Overview

Chapters 8 - 15 Summaries

Tar Sands Project

Environmental Careers

Tar Sands Focus Questions Chapters 13 - 15

Unit 2 Exam Outline

Tar Sands and James Cameron

Syncrude Canada will not develop Saskatchewan oil sands at this time

Tue, Apr 13, 2010 09:07 PM CST

Syncrude Canada has no interest in developing Saskatchewan's oil sands, at least not yet.

On Tuesday, the C.E.O. of Canadian Oil Sands, Marcel Coutu, was in Regina on a public relations mission explaining the company's side of the environmental debate about oil sands developments.

Right now, Alberta's oil sands are being developed and at this stage there are no plans to tap into Saskatchewan's deposits

From:  www.mysask.com

Focus Questions for Chapters 10 & 11

Articles - March 29th

Nuclear isn't necessary - The notion that we need nuclear power to address climate change does not reflect the realities of the marketplace or rapid new developments in energy technology.

Best Chapter Summaries - 3, 4 & 5

Best Chapter Summaries - 6 & 7

Questions Chapter 8 - 10

Tar Sands Questions Chapter 6 & 7

Tar Sand Summaries Chapters 1 & 2

Chapter 3-5 Questions

Tar Sands Questions - Chapter 3-5.doc

Updated - chapter 5 now done - Feb 17, 2010

How do I do this!!!

Here is a sample presentation from another book: Chapter 14 Sample Presentation.ppt

Need access to something to create slide shows???  Try this:  Open Office  It is free and very good.

Tar Sands Chapter Summary Rubric

Chapter Sign Up

Map of Alberta, Saskatchewan and Manitoba

Tar Sands Chapter Focus Questions 1-2

Oil Sands in Saskatchewan

Saskatchewan's Oil Sands - They are coming...

Jan 28th Articles

Physics, Beauty and God

Here is the clip shown in class - Murray Gell-Mann - Beauty in Physics

Here is the link shown in class to other Physicist views on the relationship between God and Physics

The Vatican's participation in the research of particle physics.

Electricity White Out Exam

A few more articles

Another OilSands Article

Articles related to recent claims about climate change

Bush administration accused of doctoring scientists' reports on climate change

Climate scientist at centre of leaked email row dismisses conspiracy claims - listen to the interview as well

Climate chief: nations must ignore 'climate saboteurs'

UN climate panel to do its own 'ClimateGate' probe

"The emails do nothing to undermine the very strong scientific consensus ... that tells us the Earth is warming, that warming is largely a result of human activity," said Jane Lubchenco, head of the National Oceanic and Atmospheric Administration.

She said the emails don't address data from her agency or the U.S. space agency NASA, which both keep independent climate records that show dramatic global warming.

Scientific Journal ->  Nature: Climatologists under pressure

Scientific Journal -> Nature: Battle lines drawn over e-mail leak

Naming Acids Answers

More Articles

Chapter 17-28 Summaries

Tar Sands Articles

Notations Review Answers

Waves & Sound White Out Exam

Chapter 9 - 16 Summary Samples

Smelling Land Chapters 1 - 8 Samples

Here are chapters 1 - 8 samples.  They are the best of what has been submitted so far.  Please note that if you were supposed to do chapters 1 - 8 and it is still not in, it is now too late to submit it and you will be required to submit an extra chapter from chapter 9 onward.

CH1 SmellingLand.ppt

Aug 30th Articles

EXCELLENT RESOURCE - G8 Science Academies Joint Statement on Climate Change

Summer Articles

Delay Gratification - Self Discipline

An interesting video on what it takes to be successful.

A related article on the concept of 'delay gratification'

June 4 Article - Hydrogen Fuel Cells are the Future - Car Makers

Automakers still have faith hydrogen fuel-cell cars

A General Motors Chevrolet Equinox fuel cell-electric SUV is shown during a dedication ceremony of California's first hydrogen refueling station in Los Angeles on Thursday, June 26, 2008. (AP / Damian Dovarganes)

A General Motors Chevrolet Equinox fuel cell-electric SUV is shown during a dedication ceremony of California's first hydrogen refueling station in Los Angeles on Thursday, June 26, 2008. (AP / Damian Dovarganes)

Updated Thu. Jun. 4 2009 5:34 PM ET

The Canadian Press

VANCOUVER -- The shine went off hydrogen fuel-cell cars well before the auto industry drove off a cliff last year, but that doesn't mean carmakers have abandoned the zero-emission technology.

In the 1990s, proponents predicted consumers could be driving fuel-cell vehicles as early as next year.

But they underestimated the obstacles in the way of producing a reliable, affordable car with the kind of range and drivability motorists now take for granted.

The U.S. government, facing a trillion-dollar deficit and a costly bailout of ailing domestic automakers, has slashed research funding for automotive fuel cells in favour of alternatives such as battery-electric and biofuel-powered vehicles.

Canadian fuel-cell pioneer Ballard Power Systems Ltd., of Burnaby, B.C., has virtually given up on the automotive side, focusing instead on more prosaic applications such as industrial forklifts and stationary backup power generators.

But the major automakers, including one-time Ballard partners Daimler-Benz and Ford, as well as embattled General Motors, are still sure hydrogen fuel cells represent the best long-term answer for reducing carbon dioxide emissions.

Fuel cells combine hydrogen and air to produce electricity by running them through a chemical catalyst. The only byproducts are heat and water.

Auto industry experts at this week's international conference on fuel cells in Vancouver said even if carbon-based sources such as natural gas or biomass are used to produce the hydrogen, fuel cells are more energy efficient and produce far less CO2 than hybrids or plug-in, battery-powered vehicles.

But for now, fuel-cell vehicles represent part of a multi-faceted solution to reduce greenhouse gases and conserve petroleum resources, they said.

Battery-electric vehicles seem the best choice now for short-distance city use, with plug-in hybrids that use small on-board engines to recharge their batteries better suited to longer distances.

Conventional gasoline- and diesel-powered trucks will continue to be the mainstay in the commercial sector for some time.

Down the road, though, they agreed hybrids should provide the range, power and all-weather durability to replace conventional cars.

The generally accepted goal is to produce a vehicle that can go 500 kilometres without refuelling while surviving northern winters and desert summers.

Automakers are closing in on those goals.

Honda's latest fuel-cell car, the FCX Clarity, has a range of 390 kilometres and can start in temperatures ranging from -30 C to 95 C, Ryan Harty, a Canadian-born engineer with American Honda's fuel-cell research centre in Torrance, Calif., said in an interview.

Automakers have largely settled on 2015 as a target date to get mass-produced fuel-cell cars into dealer showrooms.

Development lately has gone on largely out of the public spotlight as the focus shifted to hybrids and plug-in cars such as the Chevrolet Volt.

The first ungainly prototypes had fuel-cell stacks, which produce the electricity, and drive systems so bulky there was room for little more than the driver.

Development has shrunk the components so they can be packaged in a compact car or mid-sized SUV. The Clarity's fuel-cell is roughly the size of a desk-top computer and sits in the car's centre console between the driver and passenger.

A dozen fuel-cell cars, including the Chevrolet Equinox, the Clarity and Mercedes-Benz's A-Class F-CELL, drove into Vancouver on Wednesday after a 2,700-kilometre trip up the West Coast from San Diego, Calif.

Consumer-ready Clarities are being leased to motorists in California for three years to test their real-world durability. The lessees are a mix of average consumers and celebrities such as actress Jamie Lee Curtis.

"We wanted to make sure people were paying attention," said Steve Ellis, American Honda's manager of fuel-cell marketing.

The cars are being leased through dealerships so they would get an idea of what it takes to sell and service fuel-cell vehicles, he added.

In all, there are about 300 fuel-cell vehicles from different makers in the hands of California drivers, including a version of GM's Equinox crossover SUV. GM is also promising to bring eight to Canada for use at the 2010 Winter Olympics in Vancouver.

These are not test mules, says Lawrence Burns, GM's vice-president of research and planning.

"These vehicles are real," he says.

Andreas Truckenbroadt, chief executive of the Vancouver-based Automotive Fuel Cell Partnership, said cost reduction remains the biggest challenge for commercializing fuel cell vehicles. The goal is to make them comparable to current engine technology.

"We still have a way to go but we know how to get there," he said.

He supports the idea of co-operating to develop some components the customers don't see, such as hydrogen compressors, valves and humidifiers, that don't effect performance or driving characteristics.

"We're fierce competitors but we should not be worrying about brand specifications," said Truckenbroadt, who comes from Daimler-Benz.

Burns agrees there's room for collaboration among automakers and suppliers.

"It's silly to put our capital and our engineering dollars into those parts if they're not going to be the basis for winning the race," he says.

June 1 Article - Sustainable Housing in Saskatoon

See the article - The New Green City

Bruce Power's Plan

Here are some links.  Note that one of their documents talks about a hydrogen energy hub!

Bruce Power's Plane - Saskatchewan 2020

Bruce Power's Nuclear Feasibility Study

Bruce Power's Document - Saskatchewan and the Hydrogen Age;
Nuclear Energy Can Drive the Transition

May 26th Articles

May 25th Articles

May 19th Articles

May 18th Articles

May 13th Article

May 12 Articles

Here are a few articles on the topic of energy from the June 2009 edition of Discover Magazine.  You can see the original in the library.

The Big Heat.PDF

Sunshine Bottle.PDF

May 11 Article - Carbon Taxes

Fighting climate change with carbon taxes needs more support...

Canadians barely support carbon tax, poll finds

More Hydrogen Biased Resources - not just for Mark ;)


The "Related Links" on the bottom right have some excellent articles.

The scientific thought on nature from Nikola Tesla

I thought this quote was interesting - the thoughts of a major scientist from 90 years ago.

"The progressive development of man is vitally dependent on invention.  It's ultimate purpose is the complete mastery of mind over the material world; the harnessing of the forces of nature to human needs."

Nikola Tesla - 1919

Nuclear for all the wrong reasons...

Here is an article about nuclear energy.  I don't know if I would say it is for a very good cause.

Russia to build floating Arctic nuclear stations

Bonding Formulas and Naming White Out Exam

April 22nd Article on Wind Power

Though this was interesting:

Reports of wind farm health problems growing

Clean Coal Commercials - PRO and CON

Here are a few PRO and CON Clean Coal (Carbon Capture and Sequestration) commercials that were shown by our guest speaker from the City of Saskatoon


More info for your essay - these are some REALLY good sources

Exam Outline

George Monbiot - Heat: How to stop the planet burning

Frontline: Heat

Excellent film on energy - great material for your essay.

Frontline: Heat

Big Oil Chooses For Biofuels and Against Wind, Solar and Hydro

March 6th Articles

March 1st Articles

Feb 22nd Articles

Vancouver poised to lead world in fuel cell technology

74 miners killed, 114 injured in China coal mine blast (About 3,200 people have died in coal mine accidents last year in the country).

Feb 18th Articles


Robot details...

Robot Site
SumoBot Video
Basic Build Manual
Programming Manual

Start Programming Early - Come at lunch for help

Competition details

2012 Competition - Lessons Learned

Many teams using clear wheels - can purchase through http://www.solarbotics.com/
Some teams using different servos - fingertechrobotics.com

Parts are cheaper through both of these Canadian sites due to less shipping.

Purchased an accelerometer to use.

2010 Competition - Lessons Learned

We should build our own competition ring - MDF with latex paint and a lacquer on top.  Use printer anti-static spray to get rid of ESD.

Consider getting accelerometers to detect when we are being pushed.

We competed well and made it from the round robin into the competition round but struggled with RELIABILITY in the playoffs.  Tires fell off, sensors stopped working, etc.  Ensure your rubber tires stay on - double tires works as do blue broccoli elastics!  Gluing them on also works.

Winners were "I <3 pi" from Watson, "stealth" from Canora and Canora-2...

Watson had a standard blade and tires, always started sideways, evaded the competition by moving backwards and then turned to find the back of the competition pushing it out of the ring from behind.

Canora had steel blades with quite a swoop.  Their blade was always touching the surface.  Canora had modified their tires and glued special surfaces to their wheels.  Canora's robots could NOT be pushed sideways out of the ring as other robots could be.  Canora also had a special black fabric around their vehicle - it didn't help.  They also had faster robots - either faster motors or had done something else. 

All winners were just under 500g - weight helps!  All winners had side (extra) IR sensors and emitters.  All winners had custom code.

Great fun was had by all 3 BJM teams who scored more points than any other school (and also won more door prizes than any other school).

Tentative Field Trip Dates





Waves Lab

March 30th

Bring bathing suit, camera, notepad/pen to document the tour


Potash Mine (--)



Bus Rental (???)

Radiation Lab

April 13th

 Review decay, half-life

School Bus Rental ($65)

Diffraction Lab

April 26th

Review superposition, interference, diffraction

School Bus Rental ($65)

Dodd's Labs (Sound & Light)

May 4


School Bus Rental ($65)

Feb 7 2009 Articles

Curriculum Ties Project - Sample Presentation

Curriculum Ties Project Rubric - Word Doc

Curriculum Ties Project Rubric

Smelling Land Chapter Sign Up

Here is what you signed up for.  If you DIDN'T sign up for 10 chapters, be sure that you let me know and we can add you to the sheet.  It is your responsibility to check when your chapters are due.  Not mine.

Smelling Land Chapter Sign Up

You need Adobe Acrobat Reader to see pdf files on your computer.  If you cannot open this, try getting the latest version here:  http://www.adobe.com/products/acrobat/readstep2.html

Curriculum Ties Project

Physics 20 Scientific Literacy Assignment

Dec 20 - Obama appoints more science advisors

John Holdren, appointed by US president Obama, is a leader on climate change and believes nuclear power has a role in solving climate change.

Here is the appointment article (and a more detailed one, and yet another)
Here is an article on his work life

Here is an audio clip where he discusses nuclear power's role in solving climate change.

Dec 18th Articles - Batteries and cosmic rays

Bredboard Connections


December 12th Articles

This professor (Mark Jacobson - Atmosphere/Energy Program, Dept. of Civil & Environmental Engineering, Stanford University) says we need electricity and hydrogen just like Scott does.  He likes wind and solar harvesting technologies but is concerned about carbon sequestration, ethanol and nuclear technologies.  His path would be wind (solar) -> wind turbine (solar farm) -> electricity or hydrogen as a currency -> service technologies -> services.  He feels we do not need nuclear and that there is enough wind and solar.  Here is a LOT of information about his analysis.

Jacobson, M. Z., Review of solutions to global warming, air pollution, and energy security (published online version) (pdf)

News summary of article (link)

Video summary of article (link)

October 1, 2008 presentation slides (pdf)

October 10, 2008 Briefing to Senator Jeff Bingaman, Chairman Senate Energy and Natural Resources Committee (pdf)

The world's only wind map based on data alone at the height of modern turbines


Any other information you have heard about the amount of wind available worldwide over land is not based on real numbers but based on guesses only. The quantity from data is about 72 TW (delivered) in locations over land where the wind speed > 6.9 m/s (about 13% of the world land) (compared with a world power demand of 12-15 TW (which would decrease significantly if we converted to electricity for everything).

Here are a few of his responses to my questions:



    Hydrogen is clean (if it is produced from clean energy), but moving an HFCV 1 km requires almost three times more clean energy than does moving a BEV one km (please see the spreadsheet in the Supplementary Information of the article from either of the two sites below


(e.g., a plug-to-wheel efficiency of a BEV is 75-86% whereas an electrolyzer-to-wheel efficiency (of a HFCV (accounting for electrolyzer efficiency~74%, compressor efficiency ~90%, fuel cell efficiencies ~46-50%, and about 3% leakage) is around 30% (these compare with an internal combustion engine tank to wheel efficiency on average in the US of 17%. Thus, BEVs are by far the most efficient of all energy conversion technologies for vehicles. However, H2 is a great storage medium for intermittent energy.

    In the US, most cooling is already from electric air conditioning, so that is addressed in the paper since the results apply to the electricity sector. Also, about 40% of heating is through electrical resistance heating or heat pumps. Most of the rest is from natural gas heating, as is most water heating (although a good portion is electrical water heating). The next step would be to convert home heating and water heating to electricity powered by renewables. We have preliminary calculated that this  would increase electricity requirements by on the order of 40-50%. Thus, we would have taken care of nearly all sources of CO2 in the US (vehicles, electric power, home heating/cooling, water heating/cooling), except for some industrial processes that require high temperatures, and ships/airplanes. These could be addressed last.


A few questions about your paper from a high school teacher dabbling in energy.  I (well, my grade 11 class and I) have been reading a book entitled Smelling Land:  The hydrogen solution to climate catastrophe.  In it, the author (David Sanborn Scott - www.smellingland.com) argues for a shift to a hydrogen/electric age. He argues that hydrogen will be necessary to replace fossils.  As well, he argues that there is simply not enough wind or solar to replace all fossil sources and that we will need a combination of nuclear, solar, wind, etc to really solve the issue of carbon dioxide output.  He, like you, is against carbon sequestration and ethanol but is pro-nuclear.  He also feels that fuel cell vehicles are a superior technology to battery vehicles (I agree with your statement that a HFCV/BEV hybrid may be the solution).

I like your article and it appears to address generating enough energy/exergy for transportation alone but I don't see where it addresses total energy/exergy requirements including heating, cooling and other electrical needs.  Am I missing something here? How will we rid ourselves of the other technologies that produce this energy and also carbon dioxide?

Also, would you not think that we would be better to generate hydrogen from wind so we can do a bit of storage to compensate from the burstiness of this harvesting technology?  That is, rather than an electrical grid, we could have a hydrogen grid (pipelines, etc)?

It would be more efficient to generate the electricity from wind, then transmit it to a filling station and produce the H2 on site in an electrolyzer. This avoids pipelines, which are more expensive than transmission lines, and reduces leakage potential.

Furthermore, do your calculations for nuclear factor in the fact that at some point, the operation and mining itself could be accomplished by hydrogen fuel cell machinery rather than fossil fuel service technologies?  Admittedly this would be a ways away however it would reduce the CO2 per unit energy that you calculated to almost zero would it not?

This would be very inefficient and also not necessary. There is no need for nuclear since either wind or solar, alone can power the entire world many times over.


Mark Jacobson

Thanks for your time
Kevin Riffel
Bishop James Mahoney High School
Saskatoon, SK

Mark Z. Jacobson
Professor of Civil and Environmental Engineering
Professor, by Courtesy, of Energy Resources Engineering
Director, Atmosphere/Energy Program
Stanford University                Phone:    650-723-6836
Yang & Yamazaki Environment & Energy Bldg.    Fax:    650-725-9720
473 Via Ortega, Room 397            Email:    jacobson@stanford.edu
Stanford, CA 94305-4020     http://www.stanford.edu/group/efmh/jacobson/



Thanks for the response Mark.  First, I am not arguing against your plan or analysis, I am just trying to determine if it will be enough and if we can avoid using nuclear which some (like Scott) say we cannot.

Where does that 40-50% increase come from?  Renewables?  If so, which ones?

This is the increase in electric power generation from replacing natural gas for home/commercial heating and hot water with electric power (electric resistance heaters or heat pumps and electric hot water heaters) (where the electricity comes from any renewable electric power source)

I have students debating this as well so they are quite keen on your responses.
I agree that BEV efficiency is high but the range limitations are a concern (I have heard of battery swapping to increase range but that seems problematic).  Clearly BEV would be awesome in my small city! HFCV efficiency is lower but we get a lot of freedom (long range vehicles).

The Tesla range is now 242 miles. Electric vehicles have the advantage in that they can be charged at home or work, thus no more trips to the gas station. Their only disadvantage is for single-shot trips > 200+ miles. This is a small percent of trips for most people. Thus, an hybrid BEV-HFCV might come in handy for this case (or battery swapping).

One question I have about your analysis is that you deal with industrial processes, ships, trains??? and airplanes last.  What portion of the US CO2 production is due to this???  I would think it would be a HUGE amount.

Aircraft are ~3% of carbon worldwide. Ships are on the same order.

I would definitetly try to use hydrogen fuel cells for the ships and planes (or hybrid electricity-hydrogen fuel cells).

 My concern is that without addressing this we are ignoring a large amount of carbon dioxide.  Also, the CO2 released by an airplane has a high residence time due to its altitude.

CO2 has such a long lifetime in the atmosphere (35-50 year e-folding lifetime), that it doesn't matter where it is emitted so much. However, soot from aircraft is a bigger issue with regard to altitude of emissions.

I really don't see a solution to the plane/ship/long distance private vehicle solution without hydrogen.  Based on this, I am unsure where we get the extra hydrogen from to power the planes and trains and the extra energy to power the industrial processes. Nuclear?  Solar?  other?

There is enough wind or solar, independently, to provide all the world's power for everything (including if we used hydrogen), many times over. Again, there is no need for nuclear. Given that it takes 10-19 years for a new nuclear plant to come online, it is also an opportunity cost loss since we will be emitting coal and gas while we wait.


Thanks for the links to your data.  My students will find it to be very thorough and overwhelming!  Something they need to see for sure.

I really think we also need hydrogen from renewables in order to do some load balancing but from what you are saying that load balancing could be accomplished with an intelligent network of sorts.

Thanks again



    We published the world's only wind map based on data alone at the height of modern turbines


so any other information you have heard about the amount of wind available worldwide over land is not based on real numbers but based on guesses only. The quantify from data is about 72 TW (delivered) in locations over land where the wind speed > 6.9 m/s (about 13% of the world land) (compared with a world power demand of 12-15 TW (which would decrease significantly if we converted to electricity for everything).

Please see Slide 24 of the "presentation slides" located at


to see the area required for solar to power the entire U.S. vehicle fleet on batteries. It is very small, particularly compared with E85 from corn or cellulose. It is larger than the 3 km2 wind land footprint to do the same thing but smaller than the spacing area for wind. It is only twice the area required for nuclear power plants to do the same thing (Figure 6 of http://www.rsc.org/Publishing/Journals/EE/article.asp?doi=b809990c

since nuclear needs a buffer zone and requires land for mining, storage of waste, and its own facilities (discused in text).

    You are welcome to post the information I have provided.


Thanks Mark.  I understood where the 40-50% was calculated from, just asking where we would get the extra electricity for replacement from.

I have heard people argue both ways on this one (There is enough wind or solar, independently, to provide all the world's power for everything (including if we used hydrogen), many times over. Again, there is no need for nuclear. Given that it takes 10-19 years for a new nuclear plant to come online, it is also an opportunity cost loss since we will be emitting coal and gas while we wait.)

I have never seen a complete analysis explaining either side of supporters or deniers of this statement.  That is, there are people arguing that there isn't enough wind to power everything and that we would have to cover far too much land to use solar.  Could you point me to further evidence supporting your view that there is enough power for ALL of this without nuclear or fossils?

Thanks again for your time.


Section 10 of the paper discusses intermittency and how to deal with it. Storage would be one of the last things to do if it is needed. One can still store hydrogen at filling stations, so it does not matter so much whether the hydrogen is produced at a centralized plant and piped or produced at multiple filling stations and stored there. I suppose transmission lines may fail more than pipelines, but I am not so sure that makes up for the greater infrastructure changes required to add pipelines and trucks  rather than use transmission lines, which are predominantly in place (but may need beefing up).


Alright.  But I am still unsure how you would plan to address the burstiness of the wind/sun harvesting technologies.  That is, would you not have to store the electricity somehow or essentially lose it hence leading to losses anyway?  I was thinking that 'extra' electricity (that above current demand) would go to generating hydrogen to be piped.  I suppose that hydrogen generation could be done at ANY point in the system of electrical transmission.  The concept of generating and piping hydrogen would allow for greater load balancing as well as potentially reducing the risk of natural and man made disasters that transmission lines have.  It would provide a doubly redundant system albeit with one of them being less efficient than the other.

Powerpoint Circuit Symbols

Build Demo Description

Dec 6th Articles - Electric Cars???

Maybe we are not moving to hydrogen...

This quote is from the WWF report entitled:  Plugged In: The End of the Oil Age.

The final word on hydrogen goes to Dr. Ulf Bossel of the European Fuel Cell Forum:

Without the slightest doubt, the technology for a hydrogen economy exists or can be developed in reasonable time. Also, hydrogen is an appropriate energy carrier for particular niche applications, or it may become an important medium for electricity storage with reversible fuel cells. But hydrogen can never establish itself as a dominant energy carrier. It has to be fabricated from high grade energy and it has to compete with high grade energy in the market place.  Hydrogen cannot win this fight against its own energy source. Physics is eternal and cannot be changed by man. Therefore, a "Hydrogen Economy" has no past, no present and no future. The road to sustainability leads to an "Electron Economy".

Here are several articles related to electric cars...

Hawaii Says Aloha to an Electric Car Network
Electric Car Dreams Have Limits
Mini-E Electric Car
Task Force Sees Electric Vehicle Revolution in the Next Decade
Is The Volt GM's Savior
Long Range Electric Car is the Future
Chrysler's Electric Surprise

Questions for Scott

Please post your questions for Scott in this thread.  You will have to click on the heading of this thread to post your comments.  Please post at least ONE question and no more than THREE.


Post with as follows:

FIRST NAME - Question

Another Oil Entry

Chapter 41 - 46 Questions

Video Sources for you Essay

Chapter 37 - 40 Questions

Check Your Chemistry 20 Due Dates

Chemistry 20 Due Dates






Due Date

Unit 1 Intro to Chemistry

Aug 28

Scientific Literacy Project - 10%


M1 - Sept 19

M2 - Oct 17

M3 - Nov 21

M4 - Dec19


Unit 5 - Chemical Reactions and Stoichiometry


Dec 2

Balancing Equations Practice


Dec 3

Dec 2

Balancing Quick Quiz


Dec 3

Dec 4

Net Ionic Equations Practice


Dec 4

Dec 2

Net Ionic Quiz


Dec 5

Dec 5

Chemical Reactions Notes and practice problems


Dec 10

Dec 10

Balancing and Predicting Worksheet


Dec 11

Dec 10

Single Replacement Lab - Hypothesis, Procedure, Precautions due by tomorrow


Dec 11

Dec 11

Single Replacement Lab - Individual Hand In (Group lab)


Dec 12

Dec 15

Molarity Practice Problems (pg 415 1,2,3 and pg 421 16,17) and Worksheet


Dec 17

Dec 15

Molarity Performance exam


Dec 17

Jan 5

Ideal Stoich Practice Problems (pg 287 1,2,3,4 and pg 421 20)


Jan 7

Jan 7

Limiting Reaction Practice Problems (pg 297 22, 25, 28 a,c and pg 294 1,2) and Worksheet


Jan 12

Jan 7

Final Performance Assessment


Jan 13-14

Jan 15

Review Worksheet and Outline


Jan 19

Updated Jan 4, 2009

Questions - Chapter 33 - 36

A new article thanks to Michal

Vatican opinion on Nuclear Power

Here is a fairly recent article on nuclear power and the Vatican

New chapter questions 29 - 32

A great little video about climate change (Global Warming)

The Denial Machine - Watch it again here:  http://www.cbc.ca/fifth/denialmachine/video.html

The message:  Conservatives and Liberals should have made a better effort.

Frank Luntz - "If you really care about global warming...take it out of the political sphere...be honest and focus on solutions that will actually make a difference."

An interesting SOURCE for our new CURRENCY

Unit 1 White out exam

Lawson Wave Pool Lab

Here is the lab sheet:  

Waves Lab - 2nd draft.doc

Here is a pool schematic with coordinates:

Wave Pool Schematic with coordinates.bmp

Here is a sample graph:

Graphis - Sample Wave Data.grs

SigmaPlot - Sigmaplot Graph Sample.JNB


Here is the graphing software:

Graphis -


SigmaPlot - http://www.sigmaplot.com/downloads/trial/sigmaplot-trial.php

Here is the Wave Pool Data: 

Wave Data - 2010 Winter.xls

Here is the background information from Rick Sirois on the pool operation:Wave Pool Backgrounder.pdf

Here are a few schematics of the pool area:



Chapter 25 - 28 Questions

Hydrogen Fuel Cells & Climate Change

Here are a few links to some fuel cell stories:


A story about politics and climate change:


Chapter 21 - 24 Questions - Enjoy!!!

October 2nd Articles

Here are a few interesting articles related to

Problems with Electric Cars


Hydrogen Fuel Cell Cars

Chapter 17 - 20 Questions

Physics Chapter 14 pg 810 answers

Unit 2 Mole, Electron, Nuclear Test

Nuclear Web Quest

Chapter 13 - 16 Questions - Enjoy!!

Questions - Chapter 9-12

September 9th Articles - Nuclear Reactors and Childhood Cancer

Questions from chapters 5-8

Physics 30 Due Dates

Physics 30 Major Due Dates



Self-Check (SC)


Hand In (HI)

Due Date

Unit 1 - Intro To Physics

Aug 30

Original Research Review - 7.5%

Build Demo - 7.5%



M1 - Sept 20

M2 - Oct 17

In Class Project

Course Continuation Dates are:  

Sept 19th, Oct 11th, Nov 7th, Dec 5th, Jan 11th

September 1st Articles

A few articles related to climate change and Smelling Land!  Use them for your essay by filling in the research organization sheet (found here).

Reducing Urban Sprawl To Reduce GHG Emissions

Financial Risks Due To Global Warming From Coal Plants

Wind Power Overflows Transmission Lines - Forced To Shut Down (We Need a New Infrastructure - Hydrogen!)

Are we PAST the tipping point? Articles for August 30th.

Just one article today.  Smelling Land and Can We Save Planet Earth both talk about tipping points.  Are we past the tipping point?  Here is an article for you.

Mr. Riffel





Physics 30 Outline T1 2013-2014

Chemistry 20 Scientific Literacy Assignment

Chemistry 20 Outline T1 2008

Chemistry 20 Due Dates - Nov 16, 2008

Chemistry 20 Due Dates






Due Date

Unit 1 Intro to Chemistry

Aug 28

Scientific Literacy Project - 10%


M1 - Sept 19

M2 - Oct 17

M3 - Nov 21

M4 - Dec19


Bonding Formulas and Naming


Oct 27

Chemical Log Assignment


Nov 14

Oct 29

Bond Character and Electron Dot Notation Practice Problems


Oct 30

Oct 31

Covalent Naming Practice Problems - pg 235 questions 9, 10, 11


Nov 3

Oct 31

Naming Covalent Compounds Worksheet


Nov 3

Nov 5

Review Sheet for Ion Formation


Nov 5

Nov 5

Ionic Card Activity


Nov 5

Nov 5

Ionic Compound Practice Problems - Pg 235 3,4,6,7,8,16,18,27


Nov 10

Nov 5

Chemical Formula Writing Sheet


Nov 10

Nov 5

Polyatomic Ion Practice


Nov 10

Nov 5

Naming Ionic Compounds


Nov 10

Nov 5

Review - Mixed Naming Chemical Compounds


Nov 10

Nov 3

Covalent and Ionic Naming Quiz


Nov 12

Nov 13

Lewis Structures


Nov 18

Nov 17

VSEPR Performance Exam


Nov 19

Nov 18

Organic Compound Structures


Nov 20

Nov 20

Molar Mass & Percent Composition Practice


Nov 21

Nov 20

Organics & Molar Mass Performance Exam


Nov 24


Updated Nov 16, 2008

Websites and Articles - August 25th

Physemistry 20 Due Dates

Physemistry 20 Due Dates

Want a mark update prior to exams?


Get rid of all your incompletes ASAP


Want a credit in this class?

Want to avoid staying until 4:00 pm on exam day?


Get rid of all your incompletes ASAP



Self-Check (SC)


Hand In (HI) or Peer Review & Portfolio


Due Date

Feb 1

Class Continuation Dates


Mar 1, 2010

Mar 22, 2010

Apr 21, 2010

May 3, 2010

May 25, 2010

Jun 10, 2010


Unit 7 - Light & Optics


May 11

Tar Sands Project (10% of Mark)


June 11

May 12

Properties of Light Practice Problems


May 12

May 13

Intensity Lab


May 14

May 14

Intensity practice problems


May 14

May 17

Plane Mirror Practice Problems


May 19

May 19

Spherical Mirror Activities (Group of 2)


May 26

May 26

Spherical Mirror Practice Sheet


May 31

May 27

Refraction and Total Internal Reflection Practice Problems (1 - 8)


May 28

May 28

Refraction and Total Internal Reflection Practice Problems (9 - 13)


May 31

May 25

Light Unit Exam


June 1

May 25

Lab Portfolio (add Intensity and Spherical Mirror Activities Labs - Not Peer Reviewed)


June 2






Unit 8 - Chemical Reactions and Stoichiometry


June 2

Balancing Equations Practice


June 3

June 2

Net Ionic Equations Practice


June 4

May 25

Tar Sands Project Research Due


June 7

June 3

Chemical Reactions Notes and practice problems


June 7

June 3

Balancing and Predicting Worksheets


June 7

June 7

Single Replacement Lab - Hypothesis, Procedure, Precautions due by tomorrow


June 8

May 25

Lab Exam (Fuel Efficiency Lab - 12, Spherical Mirror Lab - 14, Hot Potato Lab - 9, Intensity & Distance Lab - 8, U of S - will be choice between two of the three days - 36 marks)


June 9

June 9

Single Replacement Lab - Individual Hand In (Group lab)


June 10

June 7

Molarity Practice Problems (pg 415 1,2,3 and pg 421 16,17) and Worksheet


June 10

June 7

Molarity Performance exam


June 10

June 10

Ideal Stoich Practice Problems (pg 287 1,2,3,4 and pg 421 20)


June 11

May 11

Tar Sands Project (10% of Mark)


June 14

June 11

Limiting Reaction Practice Problems (pg 297 22, 25, 28 a,c and pg 294 1,2) and Worksheet


June 15

May 25

Final Performance Lab (Open Book - Individual - 10% of Chemistry mark)


June 15-17

June 11

Review Sheets/Outlines


June 23

Chapter 1-4 Questions

Physemistry 20 Course Outline

June 14th Article

An article related to cleaning up nuclear waste

Physics 20 Final White Out Exam

The Physics 20 Final White Out Exam will not be posted online.  If you did not create notes about it in class, do not worry.  It will be shown again on Monday in class.

In the mean time, use your time wisely and go through the outline and review that was handed out.

Mr. Riffel

May 24th Articles

Here is a speculative new story about waste free energy production - Cold Fusion - highly debatable in the past.

Cold-Fusion Demonstration a Success
Arata-Zhang LENR Demonstration

Wind Power and Hydrogen Generation

More Nuclear Articles - May 18th

May 8th Articles - Keep Reading!

May 8th Articles

Nuclear Power Articles - Benefits and Risks

May 5th Articles

May 4th Articles

April 29th Articles

April 27th Articles

Does Burning Ethanol Produce Carbon Dioxide - a Greenhouse Gas

Chemistry - from http://en.wikipedia.org/wiki/Ethanol_fuel

During ethanol fermentation, glucose is decomposed into ethanol and carbon dioxide.

C6H12O6 → 2C2H6O + 2CO2

During combustion ethanol reacts with oxygen to produce carbon dioxide, water, and heat: (other air pollutants are also produced when ethanol is burned in the atmosphere rather than in pure oxygen)

C2H6O + 3O2 → 2CO2 + 3H2O

April 23 Articles

April 20th Articles

One of the best online periodic tables

The Hydrogen Solution Part 1 - Student Generated Answers and Comments

Feel free to post answers if you choose to this entry of the blog.  Please be respectful and specific.  Include the question number as well.  Note that this is Part 1.  You can enter a comment by clicking on the title link and then filling out the comment form at the bottom.

Start discussing this with your peers here.

Mr. Riffel

The Hydrogen Solution Part 2 - Student Generated Answers and Comments

Feel free to post answers if you choose to this entry of the blog.  Please be respectful and specific.  Include the question number as well.  Note that this is Part 2.  You can enter a comment by clicking on the title link and then filling out the comment form at the bottom.

Start discussing this with your peers here.

Mr. Riffel

April 8th Articles

The Hydrogen Solution Part 2 Questions

Here are the questions to part 2 of the interview with Scott.  Part 2 goes more into detail about why he feels that nuclear and hydrogen are the solution to our energy needs.


April 5th Article

April 2nd Articles

March 25 Articles

Research and Essay Rubric

The Hydrogen Solution Part 1 Questions and Information

Here are the questions and information to guide you through part one.

The Hydrogen Solution Part Two

01 The Hydrogen Solution - Part Two.mp3

Right click and save it to your computer and then play it or transfer it to an mp3 player or Ipod.

Merged Chemistry 20 / Physics 20 Course Introduction

See the course introduction again -
Merged Chem-Physics Course - Student Version.ppt

March 15 Entries

March 13th Articles

The Hydrogen Solution MP3 - Part 1

01 The Hydrogen Solution - Part One.mp3

Right click and save it to your computer and then play it or transfer it to an mp3 player or Ipod.

Research Organization Sheet

Alternative Fuel In-Class Essay Question

March 12 Articles

Unit 1 Physics Exam - White Out Version

UPDATED - Here it is:  Download file

Scientific Literacy Description for Chemistry 20/Physics 20 - Semester 2 2008

Scientific Literacy Description for Science 90 - Semester 2 2008

Science 90 Due Dates

Assigned When  Task
 Hand In or Self Check Due Date
                                                    UNIT 1
Introduction to Science 90
Thurs, Jan 31
Starting with Safety
Self Check (SC)
Thurs, Jan 31
Thurs, Jan 31
WHMIS and Chemical Safety
Hand In (HI)
Fri, Feb 1
Mon, Feb 4
Identifying Variables
Mon, Feb 4
Mon, Feb 5
Observing Falling Motion Lab
Fri, Feb 8
Fri, Feb 8
Black Box Lab
Mon, Feb 11
Mon, Feb 11
History of Metric
Mon Feb 11
Tues, Feb 12
Using Metric
Tues Feb 12
Wed Feb 13
Metric Conversions
Thurs, Feb 14
Wed Feb 13
Metric Conversion Quiz
Thurs, Feb 14
Thurs Feb 14
Significant Figures Practice
Thurs, Feb 14
Fri, Feb 15
Measuring Lines and Perimeters
Fri, Feb 15
Fri, Feb 15
Area Worksheet
Mon, Feb 25
Mon, Feb 25
Unit 1 Exam
Fri, Feb 29
Mon, Feb 25
Unit 1 Performance Exam
Thurs, Feb 28
Mon, Feb 25
Mass Lab
Mon, Feb 25
Wed, Feb 27
Volume Lab
Wed, Feb 27
Tues, Feb 26
Scientific Literacy Project
Article 1 - March 21
Article 2 - April 21
Article 3 - June 6


Mon, March 3
Group Plant Experiment
Wed, March 12
Cell parts and Mitosis Exam
Mon, March 17
Wed, March 19
Lifestyle and Cancer Activity 6.3 - pg 182
Wed, April 2
Mon, March 31
Bean/Corn Journal with Journal Rubric and Group Rubric
Tues, April 8
Tues, April 8
How Do They Do It?
Fri, April 11
Wed, April 9
Variation Within A Population
Mon, April 14
Tues, April 15
STSE Assignment
Fri, April 18


Fri, May 16Unit Exam
Fri, May 23
Fri, May 16
Ionic Covalent Lab - 1 per student
Mon, May 26

Semester 2 Science 90 Course Outline

Unit 4 Light White out Exam

Practice How to Use a Triple Beam Balance

Molarity Calculations Worksheet Key

Top Science and Green Ideas

Organic Molecules Activity Answers

Molar Mass and Percent Composition Practice

VSEPR Covalent Compound Lab Answers

Chemical Hazards and Risks Focus Questions - Answer Key

Unit 2 Mole Electron Arrangement Quiz #2

Here is the white out exam - Download file

Good luck studying

Unit 2 Sustainability of Ecosystems White Out Exam

Sustainability of Ecosystems Crossword

Here is the crossword

Soil Learning Stations

Answers to the NRC Climate Change Poster Tour

NRC Climate Change Posters ONLINE Version

NRC Climate Change Poster Questions and Answers

Earth Energy Focus Questions - Answers

Here they are folks:  Download file

Ripple Tank Applet

Click here

Unit 2 - Mid Unit Exam

Answers to the Isotopes and Ions Worksheet (ASM.4)

Section 3-1, 3-2 History of the Atom Answers

Unit 1 Chemistry Exam - White Out Version

Here it is:  Download file

Ecological Footprint Calculators

Answers to Food Chains and Webs Worksheets

Here they are:  Answers

From Land to Mouth Activity

Log into your STUDENT ACCOUNT.

Save this file to your M Drive and wait for teacher instructions.

For those who are still skeptical about climate change...

Inform yourself about what the skeptics are saying...


Jane Goodall's Youth For Action Workshop Links

Intro to Science 10 Answer Keys

Science 10 Course Outline

Here is the course outline for Science 10: Science 10 - T2 - 2011-2012.pdf

Physics 20 - Course Outline

Here is the course outline for Physics 20: Physics 20 Syllabus - T1 - 2011 - 2012.pdf

Physics text and resource access:

Extra Resources - http://glencoe.mcgraw-hill.com/sites/0078807220/student_view0/

Online Textbook - http://glencoe.com/ose/ Online access code: FFA99CA633

Useful Physics Websites for Students

Useful Chemistry Websites for Students

More links to inspire you and give you ideas for your action plan...


What does it mean to go 'Carbon Neutral' and what are carbon offsets and credits - Look here

Why would a business go carbon neutral? http://www.roadmap2020.ca/resources/sp/business-case.pdf

Sustainable shopping choices - http://www.roadmap2020.ca/resources/sp/top-10-shopping.pdf

New stores in Saskatchewan promoting green technologies

Jeopardy Power Point

Just for Rachael and Kayla - Laughing

Download file

Series and Parallel Circuits Activity

Here is the activity we did in class.  You can now practice at home: Download file


Part 3c - Sustainability Quantitative Analysis Help

Quantitative Analysis Help

Here is a pdf file that will help you calculate more precisely the impact your action has had in terms of energy or CO2.

Appliances - Calculating kWh Reduction -  http://www.wisconsinpublicservice.com/home/appcalc.asp

Cars - Fuel Economy - http://www.oee.nrcan.gc.ca/transportation/tools/fuel-consumption-guide/fuel-consumption-guide.cfm

Water - Use per activity - http://www.globalactionplan.ie/index.php?option=com_content&task=view&id=98&Itemid=199

Water - Energy to heat water - Most hot water tanks are set at 60 Celsius.  The incoming temperature is around 10 Celsius.  That means you are heating your water about 50 Celsius or 50 Kelvin.  Remember Q = mCΔT.  If you know the mass of the water (1 Litre = 1 Kg of water) you can calculate the energy to heat the water.

Natural Gas - Energy Provided - The gross heat of combustion of one normal cubic meter of commercial quality natural gas is around 39 megajoules.  However, most water heaters run at around 80% efficiency and therefore only deliver 80% of these megajoules to the water (Wikipedia)

Natural Gas - CO2 released from burning 
0.0503 grams of C02 produced for every 1000 Joules of natural gas burned


The complete combustion of 1000 cubic feet at STP of natural gas results in the production of about 122 lb of carbon dioxide (http://cdiac.ornl.gov/pns/faq.html)

Coal power plants (most of Saskatchewan's electrical energy) -
1 kWh of electricity from a coal-powered fire station produces on 966g of carbon dioxide (http://www.esru.strath.ac.uk/EandE/Web_sites/01-02/RE_info/C02.htm)

Reducing your hot water tanks temperature? - Be carful - http://www.safety-council.org/info/home/hotwater.html

Costs of energy - Natural Gas $0.3393 per m3, Electricity $0.0938 per kWh (www.saskenergy.com)

Cost of Gas - $1.20 / litre
Cost of Diesel - $1.00 / litre

Converting litres of gas used into CO2 produced - SHORT GUIDE, LONG GUIDE

All you wanted to know about Saskatchewan gas prices (http://www.saskgasprices.com/)

You could calculate the molecules of C02 saved or reduced:

Tonnes of C02 --> Grams of C02 --> Moles of C02 --> Molecules of C02

1 tonne is defined as 1000 kilograms or 1 megagram. (www.wikipedia.org)

Trees - The Government of Canada has encouraged each Canadian to lower their CO2 emissions by a tonne/year. The Tree Canada Foundation has taken up this lead by asking each Canadian to plant 110 trees - on average 110 trees will sequester 1 tonne (1000 kg) of CO2 per year.  (http://www.treecanada.ca/programs/climatechange/trees.htm).  Therefore 1 tree will sequester 9 kg of CO2 per year.

Lawn - NOT SO GOOD NEWS - Looking at lawns, West noted that there are a number of associated costs to the environment, ranging from mining lime and manufacturing fertilizer to the greenhouse gases emitted from fertilized lawns. And grass that grows faster needs to be mowed more frequently, which further increases CO2 emissions.

Putting this into further perspective, fertilizing one acre of lawn at the recommended rate of 137 pounds per acre results in 405 pounds of carbon dioxide-equivalent emissions from the production, transportation and application of the fertilizer. This includes CO2 and nitrogen oxide emissions, which are both reported in units of CO2.

These emissions are equivalent to the amount of CO2 released from an average family sedan driven about 440 miles. But residential use of fertilizer accounts for just a fraction of the more than 11 million tons of nitrogen fertilizer used in 2002 in the U.S. The majority of fertilizer is used in agriculture, and West noted that their research focuses primarily on management of agricultural lands.  (http://www.ornl.gov/info/press_releases/get_press_release.cfm?ReleaseNumber=mr20040422-00)

LAWN - WORSE NEWS - (http://ecologyaction.ca/gowild/theLawn.php)

  • An hour of mowing emits is as polluting as driving a car 32 km.4
  • One hour of lawn mowing will produce approximately 2 kg of carbon dioxide, 1.8 kg of carbon monoxide, 178 g of VOCs, 6 g particulate matter and 1.8 g of nitrogen oxides.5
  • Leaf blowers (voted as 'one of the worst inventions ever' in 2002 emit roughly 26 times the carbon monoxide and 49 times the particulate matter per hour than a new light-duty vehicle. 6, 7


Lawn does absorb a net amount of CO2 IF it is hand mowed (or mowed with green electric power), only watered when needed and commercial fertilizers are not used.  I could not find the amount of CO2 absorbed per square meter.

More about grass - http://www.michigan.gov/mda/0,1607,7-125-1570_2476_2481-9345--,00.html

Plastic bags - By cutting 100 million plastic bags a year the city will save 1.5 million litres of oil, and eliminate 4.2 million kilograms of carbon dioxide, Blumenfeld said (http://www.cbc.ca/technology/story/2007/03/28/sanfrancisco-plastic.html)

Plastic bags vs cloth bags and the CO2 involved - Excellent - http://www.bestfootforward.com/downloads/itsinthebag.PDF

Some chemistry for those doing composting - http://www.jgpress.com/archives/_free/000096.html

Great article - Farmer's market shopping versus big grocer shopping - http://www.foodshare.net/resource/files/ACF230.pdf

Energy production in Saskatchewan - http://geoscape.nrcan.gc.ca/sask/resources_e.php

Balancing and Prediction Reactions Answers

Types of Chemical Reactions Answers

Net Ionic Equations Answer Key

Balancing Equations Answer Key

Climate Change - A guide for the perplexed

Well, there is some minor debate over climate change once again - here are the details.  Ultimately one needs to look at average and long term trends not just single pieces of data from a small portion of the overall data set.

Toronto blogger turns up NASA climate error

   An important excerpt is this:

   Some consider the adjustment a blow to Al Gore and others who maintain the planet    is heating up as the result of global warming. But NASA has downplayed the    corrections and even McIntyre has suggested the new numbers would have little    impact on climate policy.

   McIntyre has said he had fun discovering the flaws, but called the adjustment a    "micro-change."

Read the detailed explanation from NASA scientists - Excerpt

   What we have here is a case of dogged contrarians who present results in ways    intended to deceive the public into believing that the changes have greater    significance than reality. They aim to make a mountain out of a mole hill. I believe that    these people are not stupid, instead they seek to create a brouhaha and muddy the    waters in the climate change story. They seem to know exactly what they are doing    and believe they can get away with it, because the public does not have the time,    inclination, and training to discern what is a significant change with regard to the    global warming issue.

Here is a nice summary article about climate change for those with questions and such.  It exposes common myths surrounding climate change and includes original source material for its references.


Part 1 - Carbon dioxide calculators

Since the current Canadian government disabled the website for your carbon footprint, I have posted several more calculators below.  Most don't give before and after results however, you still can print or record by hand the results you get with one of the calculators below.

Here is a VERY good Canadian Calculator that gives the reduction in CO2 after your actions - http://www.onelesstonne.ca/

Here are some other calculators that may be of use.










Unit 4 Review Answers

Percent Composition Practice Answers

Empirical and Molecular Formula Practice Answers

Hydrocarbon Practice Answers

Ionic Compound Practice Answers

Naming Covalent Compounds Answers

Covalent Compounds Worksheet Answers

Lewis Structure Answers

Bonding Chart Answer Key

Arctic Rush 2007 Focus Question Answer Key

Green Action Focus Question Answer Key

Covalent Naming Practice Answers

Bond Character and Electron Dot Notation Practice Answers

Density Virtual Lab

Use your worksheet to guide your efforts on the virtual lab.  Do NOT change the density of the liquid until after you are done filling in the chart on the worksheet.

The virtual lab can be found at these links:

Group Problems Solving Questions

An expensive action idea - but it is sustainable

A potential idea (but quite a costly one...)

Save money (in 2 - 6 years) and reduce your CO2 footprint...(and learn something about plumbing and physics - conductivity and heat).

Powerpipe - http://www.renewability.com/powerpipe.htm

It essentially collects the waste heat from a shower, bath or dishes and returns it to your hot water tank.  Pays for itself in 2-6 years depending on your water usage (you could calculate how long it would take to recover your money as part of your project).

It may be a good idea however I don't know anybody that has tried it so I am not endorsing it, just making people aware.  It is a Canadian company also.

An inspiring quote for the week

"A society is defined, not only by what it creates, but by what it chooses not to destroy." - John Sawhill, the late president of The Nature Conservatory

Periodic Table Trends Practice Problems

Here they are - Download file

Ask a Scientist

You ask, they tell you the answer in two weeks - http://www.hhmi.org/askascientist/index.html

    20+ lonely scientists just waiting for you to brighten their day!
    Make it worth their time and make it a great question...

Some interesting and useful sites

Here are a few sites that we have looked at in class:

http://www.cellsalive.com/ - cell models, mitosis, mieosis, cell cycle

http://www.hhmi.org/askascientist/index.html - ask a scientist a Biology question or find a question already asked.

http://www.hhmi.org/askascientist/meet-scientist/index.html - Actual scientists with profound words.

Electron Config Answers

Mole Practice Answers

Isotopes Practice Answers

Sustainability Action Project

What is sustainability?

Sustainability is a paradigm or worldview that refers to the ability to meet the needs of the present generation without compromising the ability of future generations to meet their needs.

Sustainability is a way of understanding and interacting with the world that enables society to "meet the needs of the present without compromising the ability of future generations to meet their own needs" ( Our Common Future, United Nations , 1987). This representation of the paradigm of sustainability echoes the "seventh generation" philosophy of some First Nations, which suggests leaders consider the effects of their actions on their descendants through the seventh generation in the future.

Sustainabilty IS the path towards addressing climate change and global warming.

Why sustainability, why action, why now?

    Impacts in Western Canada you may not have thought of
    Costs of Kyoto - Staggaring or Affordable
    It is now a human rights issue
    Harmful effects of climate change happening now
    EU is leading the way - can Canada be a leader
    Youth adopt MPs to address climate change
    Sask/Alberta worst in GHG emissions
    Latest Climate Change Report (IPCC - 2500 scientists from 100 nations)
    For those skeptics out there - here is an article

Here is the handout you will get in class.  Here is the rubric we will use for marking. Remember this is 10% of your overall mark.

Here are some sustainability links that may give you some ideas about sustainability and actions that you could take as part of your project.

Note, climate change is a political issue.  Various web sites may criticise or endorse certain political parties over others.  Be sure to look at the issues critically using several political viewpoints.

David Suzuki's web sites - excellent ideas about what you can do from writting letters to politicians to changing light bulbs.  There are so many excellent resources on this site that you could spend the whole year finding out new info.

Time Magazine - 51 things we can do to save the environment


Miscellaneous sites

CYCC - Adopt an MP - http://www.ourclimate.ca/main/index.php
http://www.climatechange.gc.ca/  (I am not sure if this link is still active - it may be temporarily down)
http://www.ec.gc.ca/climate/home-e.html (This government climate change link is active)

There are other sites that are also quite good.  Please let me know if you have other links you would like added to the list so other students can share your expertise!

Notes on Sig Figs, Scientific Notation and Graphing

Physics 20 Major Due Dates and Continuation Dates

Physics 20 Major Due Dates



Self-Check (SC)


Hand In (HI)

Due Date

Unit 1 - Intro To Physics

Aug 30

Scientific Literacy Project - 15%


M1 - Sept 14

M2 - Oct 6

M3 - Nov 1

M4 - Nov 28

Course Continuation Dates are: 

Sept 19th, Oct 11th, Nov 7th, Dec 5th, Jan 11th

Limiting Reactions Practice Answers

Here they are ladies and gentlemen.  The limiting reaction answers...Download file

Stoichiometry Practice Problem Answers

Here are the practice problem answers for you to check your work with, it is a 1.5 MByte download.  Download file

Molarity Practice Problem Answers

Here is my first attempt at online practice problem answers.  Sorry if they are not as neat as they should be.  I wrote on both sides and I should have written only on one.

Anyway you can download the answers here:  Download file

As usual, copies will also be in the class answer binder.

Invonvenient Truth Resources

Intro article on gasoline

Inconvenient Truth Focus Question Answers

Follow up articles:
    Giant ice shelf breaks free from Canadian Arctic

    ExxonMobile funds disinformation campaign against global warming science

Applets for Light

Nobel Symposium Debrief and Assignment

Nobel Prizes
Abel Prize
Nobel Symposium at the U of S (presenters from the U of S)
  • Welcome - Mike McGarity and Dr. Peter Stoicheff
  • Presentations - Part I
    • Economics - Morris Altman
    • Physics - Rainer Dick
    • Giller Prize (Literature) - Mike McGarity
    • Abel Prize (Math) - Jacek Szmigielski
  • Presentations - Part II
    • Chemistry - David Sanders
    • Medicine - Elodie Pastural-Hardouin
    • Peace - Asit Sarkar
    • MLA Award - Ron Cooley

Covalent compounds lab

Here is a site with lots of molecules to peruse.  It requires Chime and RasMol. 

Here is another molecular viewer:  Molecule viewer

You will need to select the molecule of interest and wait for Java to appear.   Once your molecule appears, be sure to do the following:

1st - Select JaMM2
2nd - turn draw mode to Ball and Stick
3rd - under options, check the hydrogens box

Hold the left mouse button while moving the mouse to rotate the molecule
Hold the right mouse button while moving the mouse to enlarge or reduce the molecule

Clicking once on an atom will tell you details about that atom.

CO2 - http://www.rkm.com.au/CARBON-DIOXIDE/carbon-dioxide-images/Carbon-dioxide-emission.jpg

Ozone - http://www.rkm.com.au/OZONE/ozone-images/OZONE-molecule-400.jpg

BF3 - http://upload.wikimedia.org/wikipedia/commons/b/bb/Boron-trifluoride-3D-vdW.png




NH3   View image












SF6 courtesy of 3dchem.com - View image


Chemical Log Book Word Document

Here is the word document I used to print the chart for your assignment.  You are welcome to download it and type in your assignment or you may simply hand write your assignment.

Here is the Word document

Physics 20 Formula Sheet

Here is the Physics 20 Formula Sheet - Version 2

Right click and save it on your computer if you like.  This is the version that will be given out at exams.  If you want a formula added or have a correction let me know in class and I will amend the formula sheet.


Sound Applet, Media and Video Links

Elemental Jeopardy