At a small scale, what can cause earthquake activity or seismicity?
a. Drought
b. Giant landslide
c. Water pumping or injection
d. Underground nuclear bomb tests
e. Both b, c, and d
Ans: e. Both b, c, and d
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Ultimately, which of the following is the source of energy that continually drives the hydrologic cycle?
a. Gravity b. energy from the sun and gravity c. Electricity d. geothermal energy e. Wind
____________ has been the largest and politically strongest Northern European country throughout history.
Fill in the blank(s) with the appropriate word(s).
Since the 1960s, as a result of automobile modifications (as well as other factors), carbon monoxide emissions in the U.S. have declined by more than three-fourths and ________ emissions by more than 95 percent
A) nitrogen oxide and hydrocarbon B) nitrogen hydroxide and oxygen C) nitrogen and oxygenated D) sulfur dioxide and bicarbonate E) hydrocarbon and sulfur dioxide
What is NOT true regarding transform boundaries?
A. Tectonic plates slip past each other laterally. B. Movement occurs along great vertical fractures. C. They neither create new crust nor destroy old crust. D. They’re associated with very little seismic activity. E. They mostly coincide with midocean ridge systems.