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ch4 earths resources
prentice hall earth science
Question | Answer |
---|---|
What is a renewable resource | can be replenished over a short period of time |
what is a nonrenewable resource | takes millions of years to be replenished |
what are fossil fuels | any hydrocarbon that may be used as a source of energy |
what are the three types of fossil fuels | coal, oil, and natural gas |
what is solar energy | energy collected from the sun |
what is nuclear energy | energy that comes from radioactive materials that release energy through nuclear fission |
what is wind energy | energy that is collected from the wind |
what is hydroelectric power | the power that falling water generates |
what is geothermal energy | energy harnessed by tapping natural underground reservoirs of steam and hot water |
what is tidal power | power from construction a dam across a bay |
`what is point source pollution | pollution from a specific source |
what is nonpoint source pollution | pollution from a unknown source |
what is the Clean Water Act | a law passed in the 1970's to prevent or decrease pollution |
what is the Clean Air Act | a law passed in the 1970's; the most important air pollution law |
what is runoff | the water that flows over the land rather than seeping into the ground and carries pollution |
what are tar sands | mixtures of clay and sand combined with water and varying amounts of bitumen |
what is oil shale | a rock that contains a mixture of hydrocarbons called kerogen |
what is conservation | the careful use of resources |
what is the risks of mining | tears up Earths surface and destroys vegetation |
what do the most important mineral deposits form from | igneous processes and from hydrothermal solutions |