Each step of 1 on the Richter scale of earthquake magnitude corresponds to a change in energy release of a factor of about
A) 2.
B) 30.
C) 100.
D) 1000.
Correct Answer:
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Q18: Which one of the following statements concerning
Q19: The clay minerals occur in the form
Q20: The metamorphosis of shale may produce
A) marble.
B)
Q21: The volume of the earth's core is
A)
Q22: The majority of surface rocks are
A) sedimentary.
B)
Q24: An earthquake occurs far from an observing
Q25: The reasons why the earth's core is
Q26: The earth's crust
A) has an approximately constant
Q27: A moraine is a pile of rock
Q28: The earth's magnetic field probably originates in
A)
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