Chapter 8 Energy

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Energy

the ability to cause change

Kinetic Energy

energy an object has due to its motion

Potential Energy

energy stored in an object due to its position

Thermal Energy

total value of the kinetic energy and potential energy of a group of molecules

Chemical Energy

energy that is stored in chemicals bonds

Radiant Energy

energy carried by an electromagnetic wave, light energy

Electrical Energy

energy carried by electric current that comes out of batteries and wall sockets, is generated at large power plants, and is readily transformed into other types of energy.

Nuclear Energy

energy stored in atomic nuclei that can be transformed into other forms of energy by complex power plants.

Law of conservation of energy

states that energy can change from but it is NEVER created or destroyed

Generator

a device that uses a magnetic field to turn kinetic energy into electrical energy and can produce direct current and alternating current.

Turbine

set of steam-powered fan blades that spins a generator at a power plant.

Nonrewable resources

any energy sources that eventually will run out, such as coal, oil, and natural gas.

Renewable resources

and energy source that are replenished continually

Alternative resources

any renewable and inexhaustible sources of energy to generate electricity, including solar, wind, and geothermal energy.

Inexhaustible resource

an energy source that can't be used up by humans.

Photovoltic

A device that transforms radiant energy directly into electrical energy.

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