| A | B |
|---|
| nonrenewable | Most energy resources used to generate electricity are |
| when plants die in a swampy area | Coal begins to form |
| oil is found | in folded or tilted layers of rock |
| methane hydrates form | with LOW temperatures and HIGH pressure |
| nuclear energy | alternate energy source from atomic reactions |
| biomass energy | derived from burning organic material (ex. wood, alcohol, garbage) |
| gasahol | ethanol mixed with gasoline |
| gangue | waste rock removed before mineral can be used |
| supply & demand | affect the VALUE of an ore |
| Examples of nonrenewable resources | coal, oil, natural gas, nuclear energy |
| Fossil fuels | include natural gas, oil, & coal |
| coal | most abundant fossil fuel |
| peat | layer of organic sediment |
| bituminous coal | compact, black, brittle coal |
| reserve | amount of fossil fuel extracted at a profit using current technology |
| oil | thick, black liquid formed from buried remains |
| types of fossil fuels that can be pumped from underground deposits | oil & natural gas |
| fission | the splitting of nuclei of atoms |
| solar energy | energy from the sun |
| wind farms | can generate electricity |
| hydroelectric | electricity produced from waterpower |
| geothermal | energy from hot magma |
| smelting | unwanted elements are removed from metals |
| petroleum | oil that is a liquid hydrocarbon |
| hydrocarbons | compounds containing carbon and hydrogen |
| recycling | using old materials to make new ones |
| plankton | marine organisms that decay to form petroleum |
| methane hydrates | icelike substances that may provide tremendous reserves of methane |
| ore | deposit of minerals that is large enough to be mined at a profit |
