| A | B |
|---|
| natural resource | any nautral material that is used by humans such as water, petroleum, minerals, forests and animals |
| renewable resource | a natural resource that can be replaced at the same rate at which the resource is consumed |
| nonrenewable resource | a resource that forms at a rate that is much slower than the rate at which it is consumed |
| recycling | the process of recovering valuable or useful materials from waste or scrap, the process of reusing some items |
| fossil fuel | a nonrenewable energy resource formed from the remains of organisms that lived long ago; examples include:coal, oil and natural gas |
| petroleum | a liquid mixture or complex hydrocarbon compounds; used widely as a fuel source |
| natural gas | a mixture of gaseous hydrocarbons located under the surface of the earth, often near petroleum deposits; used as fuel |
| coal | fossil fuel that forms underground from partially decomposed plant material |
| acid precipitation | precipitation such as rain, sleet or snow, that conatins a high concentration of acids, often because of the pollution of the atmosphere |
| smog | photochemical haze that forms when sunlight acts on industrial pollutants and burning fuels |
| nuclear energy | the energy released by a fission or fussion reaction; the binding energy of the atomic nucleus |
| fission | process in which the nuclei of radioactive atoms are split into two or more smaller nuclei |
| fusion | the joining of two or more nuclei to make a larger nucleus |
| chemical energy | the energy released when a chemical compound reacts to produce new compounds |
| solar energy | the energy received by the Earth from the sun in the form of 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 used as a source of energy such as leaves, wood, or dung of plant grazing animals |
| gasohol | a mixture of gasoline and alchohol that is used as a fuel |
| geothermal energy | the energy produced by heat within the Earth |
| Name two ways to conserve natural resources. | use them only when necessary and recycle them |
| name a solid, liquid and gaseous fossil fuel | solid - coal, liquid - gasoline, gaseous - natural gas |
| combustion | the process of burning a fuel to change chemical energy into thermal energy |
| refinery | Factories where crude oil is separated into fuels and other products |
| hydrocarbons | energy-rich substances in fossil fuels |
| petrochemicals | Compounds made from the fossil fuel petroleum |
| permeable rocks | rocks that allow fluids such as petroleum and gas to move through them |
| alternative energy source | energy that does not come from fossil fuels and still in development |
| geysers | hot spring that sends up steam |
| solar cells | used to power lights, telephones and calculators |
| meltdown | A dangerous condition caused by overheating inside a nuclear reactor |
