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Chapter 15
Term | Definition |
---|---|
energy | the ability to do work |
kinetic energy | the energy an object has due to its motion |
potential energy | energy stored as a of 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 | the potential energy of an object that is stretched or compressed |
Mechanical Energy | the energy associated with the motion of everyday objects |
thermal energy | potential and kinetic energy of all the microscopic particles in an object |
chemical energy | energy stored in chemical bonds |
electrical energy | energy associated with electric charge |
electromagnetic energy | form of energy that travels through space in waves |
nuclear energy | energy stored in an atomic nuclei |
energy conversion | the process of changing energy from one form to another |
nonrenewable energy sources | exist in limited quantities once used cannot be replaced |
fossil fuels | oil, natural gas or coal |
renewable energy sources | resources 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 usable energy |
geothermal energy | thermal energy beneath the Earths surface |
biomass energy | chemical energy stored in living things |
hydrogen fuel cell | generates electricity by reacting hydrogen with with oxygen |
energy conservation | finding ways to use less energy or use energy more efficiently |