EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why is Coal a useful energy source?
A
Stored and used later
B
Cheap
C
Transportation doesn’t involve high amount of upkeep
D
All of the above
Explanation: 

Detailed explanation-1: -Coal is primarily used as fuel to generate electric power in the United States. In coal-fired power plants, bituminous coal, subbituminous coal, or lignite is burned. The heat produced by the combustion of the coal is used to convert water into high-pressure steam, which drives a turbine, which produces electricity.

Detailed explanation-2: -Coal is a stable, secure energy source Coal also has the unique advantage of being able to be stored on-site, providing weeks or even months of fuel supply at the power plant. This important characteristic contributes to grid reliability, resiliency and reduces fuel supply bottlenecks.

Detailed explanation-3: -Coal is used primarily in the United States to generate electricity. In fact, it is burned in power plants to produce more than half of the electricity we use. A stove uses about half a ton of coal a year. A water heater uses about two tons of coal a year.

Detailed explanation-4: -Electricity Generation. Power generation is the primary use for coal worldwide. Metal Production. Metallurgical (coking) coal is a key ingredient in steelmaking. Cement Production. Coal is used as a key energy source in cement production. Gasification and Liquefaction. Chemical Production. Other Industries.

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