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Ch.4 Earth Resource

Prentice Hall Earth Science

QuestionAnswer
What is a renewable resource? A renewable resource can be replenished over fairly short time spans such as months, years, or decades.
What is a nonrenewable resource? A nonrenwable resource takes millions of years to form and accumulate.
What is a fossil fuel? A fossil fuel is any hydrocarbon that may be used as a source of energy.
Which energy resources are fossil fuels? fossil fuels include coal, oil, and natural gas.
How are nonmetallic mineral resources used? Nonmetallic mineral resources are extracted and processed for the non metallic elements or their physical and chemical properties.
What is hydroelectric power? Hydroelectric power is power that is generated by falling water.
What is geothermal energy? Geo thermal energy is harnessed by tapping natural underground reservoirs of steam and hot water.
What are the advantages of using solar energy? Solat energy is free and nonpolluting.
How is wind energy used? Wind energy is used to power sailing ships and windmills. it is also used to operate wind turbines.
How is tidal power harnessed? Tidal power is harnessed by constricting a dam across the mouth of a bay in coastal areas with a large tidal range.
What is point source pollution? Point source pollution is polution that comes from a known and specific location.
What is nonpoint source pollution? Nonpoint source pollution is pollution that does not have a specific point of origin.
What is runoff? Runoff is the water that flows over the land rather than seeping into the ground. It often carries waste oil from streets.
What is global warming? Global warming is the unnatural warming of the lower atmosphere.
Why is fresh water a vital resource? Fresh water is a vital resource because people use it for drinking, cooking, bathing, and growing food.
What are the risks of mining? Surface mining destroys vegetation, soil, and contours of Earth's surface. It can also cause soil erosion and create pollution that contaminates surrounding ecosystems.
Why is the chemical composition of the atmosphere important? The chemical composition of the atmosphere helps maintain life on Earth. Pollution can change the chemical compostion of the atmosphere and disrupt it's natural cycles.
What is conservation? Conservation is the careful use of resources.
What is compost? Compost is partly decomposed organic material that is used as fertilizer.
What is recycling? Recycling is the collecting and processing of used items so they can be made into new products.
Created by: zoe.dickinson
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