Ch 13 Word Scramble
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Question | Answer |
Define Energy. | Ability to do work or cause change. |
What is the SI unit for energy? | Joules (J) |
Kinetic Energy (KE) depends on what two things? | Mass and velocity |
Which has a greater effect on KE: Mass or velocity? Why? | Vecocity, because velocity is squared. Doubling velocity will quadruple its kinetic energy. |
Potential energy (PE) depends on what two things? | An object's position and shape. |
Gravitational potential energy (GPE) is energy due to __________ and ________. | Weight and height. |
GPE depends on what two things? | Weight and height. |
What is elastic potential energy? Give an example. | Potential energy associated with objects that can be stretched or compressed. Ex. bow string. |
What does it mean for energy to be transformed? Give an example. | When energy changes from one form to another, like burning gas in a car transforms chemical energy to mechanical energy. |
What is the law of conservation of energy? | No energy is destroyed or lost when energy changes to another form. |
What does Einstein have to do with the law of conservation of energy? | Einstein discovered that matter can be transformed to energy. Therefore in some situations, energy alone is not conserved. |
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summerboyi
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