Question

How is coal extracted from the earth? Select the two correct answers. (1 point)

by surface mining

by drilling wells

by hydraulic fracturing

by heating and boiling it

by underground mining

Answer 1

Coal can be extracted from the earth either by surface mining or underground mining.

How is coal extracted from the earth?

Coal can be pulled from the earth either by surface mining or underground mining.

Once the coal has been pulled, it can be used instantly (for heating and industrial processes) or to fuel energy plants for electricity.

If coal is more petite than 61 meters underground, it can be extracted through surface mining

Thus, surface mining or underground mining can extract coal from the earth.

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Answer 2

Coal is extracted from earth by surface mining or by underground mining.

What do you mean by Extraction of coal?

Extraction of coal may be defined as the process by which coal gets obtained by large machines after the removal of topsoil.

Surface mining is the process of extraction of coal, where coal is found approximately 50-100 feet deep, while underground mining is the process of coal extraction where coal is found more than 200 feet below the earth's surface.

Therefore, Coal is extracted from the earth by surface mining or by underground mining.

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