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11 Cards in this Set

  • Front
  • Back
energy
the ability to work
kinetic energy
the energy of motion
potential energy
the energy of position or shape
mechanical energy
the total energy of motion and position of an object
energy converse
a change from one form to another
friction
a force that opposes motion between two sufaces that are touching
law of conservation of energy
the law that states that energy is neither created nor destroyed
energy resource
a natural resource that can be converted by humans into other forms of energy in order to do useful work
nonrenewable resources
a natural resource that can not be replaced or that can be replaced only over thousands or millions of years
fossil fuels
nonrenewable resources that form in the earths crust over millions of years from the buried remains of once living organisms
renewable resources
a natural that can be used and replaced over a relatively short time period.