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16 terms

Chapter 8 Energy

STUDY
PLAY
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.