Acid mine drainage occurs when ____.
A. mines use acid to clean equipment
B. acid is used to remove rare earth minerals from mines
C. acid is used to detect low grade mineral ores
D. naturally occurring acids are uncovered during the mining process
E. rainwater seeps through an underground mine spoils pile and produces sulfuric acid
Answer: E
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Which would produce a more highly valued element, adding or removing a proton from the element gold?
What will be an ideal response?
Based on the rates shown in Figure 1.3 in your textbook, which of the options correctly lists the geologic processes from slowest to fastest?
A) rise of mountains, glacier flow, stream flow B) landslide, stream flow, glacier flow C) rise of mountains, glacier flow, ground water flow D) motion of lithospheric plates, sediment accumulation in the deep sea, glacier flow
There are two types of nuclear reactions that can release energy. In the first, smaller atoms combine to make a larger atom; and in the second, a large atom is split into fragments. Which of the following about the two types of reactions is true?
A) Both types of reaction are forms of nuclear fusion. B) Both types of reaction are forms of nuclear fission. C) The first is nuclear fusion, and the second is nuclear fission. D) The first is nuclear fission, and the second is nuclear fusion.
Under suitable conditions, the first combustible product in the formation of coal is
A. peat. B. anthracite. C. bituminous. D. lignite.