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13 Cards in this Set
- Front
- Back
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nonrenewable energy sources
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those energy sources that are not replaced by natural processes within a resonable length of time
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renewable energy sources
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those resources that can be formed or regenerated by natural processes
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resource
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naturally occuring substances that can be utillized by people but may not be economic.
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reserves
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the known deposits from which materials can be extracted profitably with existing technology under present economic conditions.
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surface mining
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a type of mining in which the overburden is removed to procure the underlying deposit.
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overburden
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the layer of soil and rock that covers deposits of desirable materials
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underground mining
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a type of mining in which the deposited material is removed without disturbing the overburden.
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black lung disease
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a respiratory condition resulting from the accumulation of large amounts of fine coal dust particles in miner's lungs.
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acid mine drainage
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a kind of pollution associated with coal mines in which bacteria convert the sulfur in coal into compounds that form sulfuric acid.
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secondary recovery
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techniques used to obtain the maximum amount of oil or natural gas from a well.
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passive solar system
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a design that allows for the entrapment and transfer of heat from the sun to a building without the use of moving parts or machinery
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active solar system
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a system that traps sunlight energy as heat energy and uses mechanical means to move it to another location.
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biomass
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any accumulation of organic material produced by living things.
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