Speed and Energy-180 Days Physical Science pg. 74

What is energy?

• The ability to be still

• The ability to do work

• a ball

• a hill

If something is moving fast, what does it have a lot of?

• potential energy

• kinetic enegy

• thermal energy

• chemical energy

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If a ball is placed up high, what kind of energy does it have?

• kinetic

• potential

• chemical

• thermal

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If a ball is sitting on top of a hill, when will its potential energy change to kinetic energy?

• when it rolls down the hill

• when it stops rolling

• when it changes colors

• when it changes temperature

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If one ball is rolling slowly and another ball is rolling quickly, which one has more kinetic energy?

• The ball that is rolling quickly has more kinetic energy.

• The ball that is rolling slowly has more kinetic energy.

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