Task 4 [To complete P2]
The material you use must be resistant to cold weather.
You are going to test whether wood, plastic and metal are affected by
freezing conditions.
Practical: Resistance to freezing
Complete the following steps and record your data in the table below:
1. Collect a wooden, plastic and metal equally sized block. They have been in the freezer for 24hours
2. Hit each block with a hammer
3. Record any changes you see to the material
|
Material
|
Shape before freezing |
Shape after freezing |
|
Wood |
|
|
|
Plastic |
|
|
|
Metal |
|
|
Questions:
1. Did any of the materials change shape?
2. The best material for a window would not change shape after freezing. Which material should they use? Why?
