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4A Science
Chapter 15 Lesson 3
Question | Answer |
---|---|
What is energy? | The ability to do work |
What is work? | The ability to move something |
Any change in motion requires | energy |
The energy of motion is called | kinetic energy |
The amount of kinetic energy depends on an object's | speed and mass |
An object will have more kinetic energy if it moves | faster |
An object will have more kinetic energy if it has more | mass |
Stored energy is called | potential energy |
An object has the most potential energy when it is as | high as it can be |
As an object starts to go downward, it ___________ potential energy. | loses |
Can potential energy be changed to kinetic energy? | yes |
Can kinetic energy be changed to potential energy? | yes |
Objects that are __________ or _______________ also have potential energy. | stretched, squeezed (rubber band, wind-up toy) |