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thermal energy

heat energy

light energy

energy in the form of moving light waves

sound energy

energy of vibrations carried by air, water, or other matter

kinetic energy

the energy an object has due to its motion

electrical energy

the energy of electrically charged particles moving from one place to another

chemical energy

energy stored in chemical bonds

elastic potential energy

energy stored by something that can stretch or compress

gravitational potential energy

energy stored by objects due to their position above Earth's surface

Conservation of Energy

a fundamental principle stating energy cannot be created nor destroyed but only changed from one form to another


=(useful energy output / total energy input) x 100

work done

force x distance (in the direction of the force)

energy transferred

work done


the SI unit of energy

wind power

power derived from the wind (as by wind turbines)

water power

energy produced from falling water to move machinery or generate electricity

tidal power

Electricity generated by the movement of sea water caused by the tides

wave power

Is electrical power produced from ocean waves that is used to turn an electrical generator

geothermal power

A form of power obtained from steam or hot water coming from within the earth's interior

solar heating

heat from the sun heats water in glass panels which is used for hot water or for heating

solar cell

A device that converts solar radiation into electricity.

fossil fuel

a nonrenewable energy resource formed from the remains of organisms that lived long ago

nuclear power

the use of controlled nuclear reactions to produce steam, which in turn drives turbines to produce electricity


the transfer of thermal energy by the circulation or movement of a liquid or gas


the transfer of energy through solids


the transfer of energy by electromagnetic waves


a substance that reduces the transfer of thermal energy

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