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Chapter 15
Term | Definition |
---|---|
Energy | the ability to do work |
Kinetic Energy | The energy of motion |
Potential Energy | Energy that is stored as a result of position or shape |
Gravitational potential energy | Potential energy that depends upon an objects height |
Elastic potential energy | The potential energy of an object that is stretched or compressed |
mechanical energy | The energy associated with the motion and position of everyday objects |
thermal energy | The total potential and kinetic energy of all the microscopic particles in an object |
chemical energy | the energy stored in chemical bonds |
electrical energy | the energy associated with electric charges |
electromagnetic energy | a form of energy that travels through space in the form of waves |
nuclear energy | The energy stored in atomic nuclei |
energy conversion | The process of changing energy from one form to another |
nonrenewable energy resources | exist in limited quantities and once used cannot be replaced except over the course of millions of years |
fossil fuels | Oil, natural gas, and coal |
renewable energy resources | 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 Earth's surface |
biomass energy | The chemical energy stored in living things |
hydrogen fuel cell | Generates electricity by reacting hydrogen with oxygen |
energy conservation | Finding ways to use less energy or to use energy more efficiently |