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All of the following are true of fossil fuels EXCEPT for which answer choice?
Fossil fuels are notoriously dirty sources of energy, and their pollution is often expensive and/or difficult to control.
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At the current rate of consumption, available natural gas reserves are expected to last another:
Currently available natural gas reserves are expected to last another 75 years at the current rate of consumption.
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Which type of coal is the cleanest and most efficient?
The least efficient and most abundant form of coal is lignite; after this comes bituminous coal, then, lastly, anthracite. Anthracite is a very hard form of coal with an extremely high carbon content. Anthracite also burns the cleanest of any coal, but unfortunately it is the least abundant and hardest to reach form of coal. Charcoal is not coal at all, but rather compressed and burned wood, consisting mainly of carbon and any remaining ash.
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Which of the following pairs of factors have placed the United States in a position of dependency on foreign oil?
The United States is 5% of the world Population and consumes 25% of global fossil fuel production. In addition, North America peaked in oil production in the 1970's which, when combined with a disproportionately high demand, results in a national dependence on foreign-sourced oil.
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Which of the following is NOT a true advantage of utilizing coal as an energy source?
Clean coal technology is a promising solution to minimizing pollution from coal plants, and coal is one of the most abundant fossil fuels on the planet, with reserves potentially lasting up to three hundred years. Coal is also very energy-dense when compared to biomass or other renewable energy sources; however, the sulphur content of coal varies based on geographic location, and in areas that depend on locally sourced, sulphur-rich coal, the resulting emissions contribute heavily to acidic precipitation.
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Hydraulic fracturing, also called "fracking," is __________.
Fracking is the process of blasting rocks with a mixture of water, sand, and chemicals in order to extract oil from a well. It has grown in popularity in recent years, particularly in the U.S. and Canada.
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