In a metropolitan area, buildings of different heights are a danger to each other because ____.
a. tall buildings sway slower than lower buildings, allowing them to collide
b. tall buildings sway faster than lower buildings, allowing them to collide
c. short buildings are more likely to rupture during vertical motion, making them crumble during lateral motion
d. tall buildings are more likely to rupture during vertical motion, making them crumble during lateral motion
e. different building heights resonate with vertical motion at different frequencies and can amplify vibrations
Question 2
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
Insect species diversity on British host trees supports the area hypothesis.
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