Snow
Reference back to the precipitation chart was used to introduce snow. Explanation of how snow crystals form was given. Students were then questioned as to whether any two snowflakes could be identical. They then had to explain what would cause each snowflake to be so unique. Each student then had to design their own snowflake and later compare them to one another's explaining why they were all different. Students viewed different snow crystal formations on the internet.
Notes taken from : http://www.wxdude.com/basics.html
Activity: Cut out a snowflake shape from a piece of paper. If you are with other students, go around and see if you can find another one like yours.
Click below to view examples of student snowflakes.
Notes taken from : http://www.wxdude.com/basics.html
Student Notes:
Snowflakes form when water vapor freezes into ice crystals in cold clouds. Have you noticed that there are many different shapes of snowflakes? That is because a snowflake is usually made of many different kinds of snow crystals, and the shape of a snow crystal depends a lot on the temperature at which it forms. Usually the colder the temperature, the smaller the crystals. Snow is one kind of weather that people can duplicate.
Click below to view the video presentation of this lesson.
Resources:
Activity: Cut out a snowflake shape from a piece of paper. If you are with other students, go around and see if you can find another one like yours.
Click below to view examples of student snowflakes.