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ch 9 PS HRW
Chapter 9 PS HRW
10
Physics
8th Grade
08/22/2007

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