Why does popcorn pop?
Think about the following things:
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These videos talk about EXPANSION and CONTRACTION.
Make sure you can talk about... ...what expansion means. ...what contraction means. ...when do things expand and contract? ...why does something expand or contract when temperature changes? Also think about... ...does that change its mass? ...does that change its volume? ...does that change its density? |
How does heat transfer?
Does the material change how fast that happens? How can we tell the difference between a conductor and insulator? |
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Would you rather have...
...a coffee cup full of $100 bills? ...a bathtub full of $50 bills? Is there a difference between something's temperature and it's total thermal (heat) energy? |
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