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Phys Sci - chap 15
vocabulary words
Question | Answer |
---|---|
energy | the ability to do work |
kinetic energy | energy an object has due to its motion |
potential energy | energy that is stored as a result of position or shape |
gravitational potential energy | potential energy that depends upon an object's height above a reference point |
elastic potential energy | potential energy of an object that is compressed or stretched |
mechanical energy | energy associated with the motion and position of everyday objects |
thermal energy | total potential and kinetic energy of all the particles in an object |
chemical energy | energy stored in chemical bonds |
electrical energy | energy associated with electrical charges |
electromagnetic energy | form of energy consisting of changing electric and magnetic fields |
nuclear energy | energy stored in atomic nuclei |
energy conversion | process of changing energy from one form to another |
nonrenewable energy resources | source of energy that exists in limited quantities and, once used, can't be replaced except over the course of millions of years |
fossil fuels | rich deposits of hydrocarbons mixtures that formed from the remains of organisms |
renewable energy resources | source of energy that can be replaced in a relatively short period of time |
hydroelectric energy | energy obtained from flowing water |
solar energy | sunlight that is converted into useable energy |
geothermal energy | thermal energy beneath Earth's surface |
biomass energy | chemical energy stored in living things |
hydrogen fuel cell | cell that generates electricity from a controlled reaction between hydrogen and oxygen |
energy conservation | practice of finding ways to use less energy or to use energy more efficiently |