Energy
ability to make things move or change
Thermal energy
the energy of moving particles
Mechanical Energy
energy of motion
Electrical energy
the energy of moving electrical charges
Chemical energy
energy stored in the bonds that hold atoms together in molecules
Electromagnetic energy
energy that travels as waves
Nuclear energy
energy stored in the nucleus of an atom
Fossil fuel
an energy resource that forms over millions of years from the decayed remains of ancient plants and animals
Coal
solid fossil fuel
Petroleum
Liquid fossil fuel
Natural gas
gas fossil fuel
Pollution
the release of unwanted materials into the environment
Solar energy
energy from the sun
Photovoltaic cell
solar cell, changes light energy into electricity
solar reflector
reflects and focuses sunlight onto a fluid-filled pipe, the pipe becomes heated and the thermal energy is used to turn water into steam
Wind energy
energy of moving air
Hydropower
energy of moving water
Biomass
any material from living things that can be used as an energy source
Geothermal energy
heat energy from inside the earth
Conservation
careful use and management of resources
Turbine
A rotary engine that extracts energy from turning blades.
Generator
A machine that converts mechanical energy into electrical energy