The greatest hazard to someone in a wood-frame house during an earthquake is ____
a. ?movement of the house off its foundation
b. ?wall spreading leading to roof collapse
c. ?crumbling of internal plaster and drywall
d. ?vertical shaking separating walls from floor joists
e. ?collapse of walls that are not diagonally braced
ANSWER: a
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A frothy volcanic rock with so much void space that it can actually float is called
a) Obsidian b) Tephra c) Pumice d) Lava e) Tuff
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A) ecocentrist B) anthropocentrist C) ethnocentrist D) biocentrist
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Answer the following statement true (T) or false (F)