The central United States is covered with extensive deposits of loess. Where did this loess come from?
A) Alluvium deposited during major floods
B) Rock flour from the braid plains of Pleistocene glacial streams and rivers
C) Decomposing sandstone from the St. Peter Sandstone
D) Weathering and erosion of western mountains
Answer: B
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The failure of the French to complete the construction of the Panama Canal was caused in large part by
A. lack of attention to geological factors. B. volcanism and associated seismic activity. C. political instability in the region. D. the presence of shallow ground water.
Mass wasting is a gravity-driven process
Indicate whether the statement is true or false
Why did the Christchurch earthquake (2011) in New Zealand cause much more damage than the larger Canterbury earthquake (2010)?
A) It was larger in magnitude and was deeper. B) It was closer to a large city with buildings that had been damaged by the earlier earthquake. C) A large landslide from the Southern Alps mountain range buried the capital city. D) All of these are correct.
Armenians and Azeris have clashed several times over control of Nagorno-Karabakh, an enclave within Azerbaijan inhabited primarily by Armenians
Indicate whether the statement is true or false.