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Ch.9 Vocab
Question | Answer |
---|---|
energy | the capacity to do work |
kinetic energy | the energy of an object that is due to the object's motion |
potential energy | the energy that an object has because of the position, shape, or condition of the object |
mechanical energy | the amount of work an object can do because of the object's kinetic and potential energies |
energy conversion | a change from one form of energy to another |
friction | a force that opposes motion between two surfaces that are in contact |
law of conservation of energy | the law that states that energy cannot be created or destroyed but can be changed from one form to another |
nonrenewable resource | a resource that forms at a rate that is much slower than the rate at which the resource is consumed |
fossil fuel | a nonrenewable energy resource formed from the remains of organisms that lived long ago; examples include oil, coal, and natural gas |
renewable resource | a natural resource that can be replaced at the same rate at which the resource is consumed |