| A | B |
|---|
| natural resource | any material that is used by humans such as water, petroleum, minerals, forests or animals |
| renewable resource | a natural resource that can be replaced as fast as it is used |
| nonrenewable resource | a resource that forms at a rate that is much slower than the rate at which it is used |
| the three R's | reduce, reuse, recycle |
| fossil fuel | nonrenewable energy resource that is formed from the remains of plants and animals that lived long ago |
| crude oil | another term for petroleum |
| petroleum | a liquid that is a mixture used as a fuel source; made from rermains of ocean organisms |
| natural gas | gas found near petroleum products; used for fuel |
| coal | fossil fuel that is formed underground made from decomposed plant materials |
| permeable rocks | rocks that allow liquid to flow through them |
| smog | haze that is formed when sunlight reacts with chemicals in the air |
| fission | splitting the atom to form energy |
| fusion | combining atoms to form energy |
| nuclear energy | the energy released by fission or fusion |
| chemical energy | the energy produced when a chemical reaction produces a new compound |
| solar energy | the energy from the sun's radiation |
| wind power | the use of a windmill to drive an electric generator |
| hydroelectric energy | electrical energy produced by falling water |
| biomass | organic matter that can be a source of energy |
| gasohol | mixture of gasoline and alcohol that is used for fuel |
| geothermal energy | energy produced by heat within the earth |
