Processing of the mined coal, which removes impurities, is usually done in specific locations far from the mining site.
Indicate whether the statement is true or false.
Question 2Once coal has been extracted from a surface mine, the coal mining company is responsible for restoring the land to its original contours in a process known as surface mining land reclamation.
Indicate whether the statement is true or false.
Question 3Deposits of coal are called coal seams, which can be anywhere from 20 to 300 feet thick, and stretch over hundreds of square miles.
Indicate whether the statement is true or false.
Question 4__________ invented the first four stroke internal combustion engine.
Fill in the blank(s) with the appropriate word(s).
Question 5Gasoline is a better choice than kerosene for fuel in the internal combustion engine because it is easier to _______________ than kerosene
Fill in the blank(s) with the appropriate word(s).
Question 6Historically, the first use of oil occurred where crude oil deposits were located near the surface of the Earth and flowed out under their own pressure, otherwise known as _______________.
Fill in the blank(s) with the appropriate word(s).
Question 7Natural gas is a flammable hydrocarbon consisting mostly of methane mixed with smaller amounts of _______________ and _______________.
Fill in the blank(s) with the appropriate word(s).
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