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26 Cards in this Set

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thermal energy
total value of the kinetic and potential energy of a group of molecules
temperature
measure of average value of the kinetic energy of the particles in a substance. Can be measured using fahrenheit, celcius, and kelvin scales
thermal pollution
an increase in the temperature of a body of water, caused by adding warmer water
turbine
set of steam-powered fan blades that spins a generator at a power plant
alternative resource
any renewable and inexhaustible sources of energy to generate electricity, including solar energy, wind and geothermal energy
conduction
transfer of heat by direct contact, occurs when particles of one substance collide with particles of another substance, transferring kinetic energy
convection
transfer of thermal energy by the movement of heated molecules from one place to another in a gas or liquid
conductor
materials such as copper or silver through which electrons can move easily or any material that transfers heat easily
chemical energy
energy that is stored in chemicals
engine
device that converts thermal energy into mechanical energy
energy
the ability to cause change
electrical energy
energy carried by electic current that comes out of batteries and wall sockets; is generated at large power plants; and is readily transformed into other types of energy
generator
device that uses a magnetic field to turn kinetic energy into electrical energy and can produce direct current and alternating current
internal combustion engine
engine in which fuel is burned in a combustion chamber inside the engine
inexhaustible resource
is an energy source that cannot be used up by humans
heat
movement of thermal energy from a substance at a higher temperature to a substance at a lower temperature
kinetic energy
energy an object has due to its motion
law of conservation of energy
energy can change its form but it is never created or destroyed
nonrewable resource
any energy sources that eventually will run out, such coal and oil
nuclear energy
energy stored in atomic nuclei that can be transformed into other forms of energy by complex power plants
potential energy
energy stored in an object due to its position
photovoltaic
device that transforms radiant energy directly into electrical energy
radiation
transfer of thermal energy by electomagnetic waves
radiant energy
energy carried by an electromagnetic wave
renewable resource
any energy sources that are replenished continually
specific heat
amount of energy necessary to raise the temperature of 1 kg of a substance by 1 degree celcius