Question 21
In groups, investigate the changes in air pressure. You need a small beach ball, a basin of warm water and a fridge or freezer. Inflate the beach ball. Squeeze it to feel how hard or soft it feels. Put the beach ball in the fridge or freezer. After 30 minutes, take it out and squeeze it again. Leave the beach ball in a basin of warm water. After a few minutes, take it out and squeeze it again. Discuss your results in your group.
Why do you think the beach ball got softer and/or harder between temperatures?
Why do you think the beach ball got softer and/or harder between temperatures?
