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18 Cards in this Set
- Front
- Back
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Renewable resource
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One that can be replaced within a reasonable amount of time.
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What are examples of a renewable resource?
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Food and trees because they can be grown again after they are used up
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Nonrenewable resource
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One that can not be replaced.
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What are examples of a nonrenewable resource?
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Fuels such as oil, natural gas, and coal because they take millions of years to form.
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Where does most of the energy in the u.s. come from?
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Burning fossil fuels
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Fossil fuels provides how much percent of the energy in the u.s.?
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80%
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What percent comes from oil?
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40%
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What does burning fossil fuels release into the air?
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Sulfur dioxide and nitrogen dioxide.
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When burning fossil fuels releases sulfur and nitrogen dioxide into the air what happens?
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They mix with water to form a weak acid.
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What does it eventually fall down as?
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Acid rain
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What does acid rain do?
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Kills trees, acidifies rivers and lakes, and harms wildlife.
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What does burning fossil fuels raise the level of in the atmosphere?
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Carbon dioxide
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What does this produce?
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The greenhouse effect, a gradual rise in the average temperature of the earth.
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Why is water considered renewable?
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It is recycled in the water cycle ( rain, evaporation, condensation )
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Human footprint
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A measure of how much humans have impacted or affected earth's ecosystem is to use the three Rs : reduce, reuse, recycle.
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What are the seven alternative energy sources?
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Solar, wind, hydro, tidal, nuclear, biomass, and geothermal.
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What is nuclear?
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An alternative energy source that is nonrenewable because we will eventually run out of uranium.
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What do you need to ask to determine if a resource is renewable or not?
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Can it be replaced in a reasonable amount of time?
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