Question

Which describes why the wind blows faster as it passes between tall buildings in a city

Answer 1

"The atmosphere is big. It was lots of air. There are high and low pressure systems. Think of high pressure systems as having excess air and low pressure systems having less air. Thus, the air will move from higher toward lower pressure. When it is windy outside, often there is a low pressure system the air is moving toward. How fast the wind blows will depend on the pressure differences between the high and low pressure systems. Very fast winds often occur near cold fronts, low pressure systems and jet streams. Wind can also blow faster when it is forced into a narrow space. This can happen between buildings and within mountain passes. The high and low pressure systems usually develop due to temperature differences. For this essay memorize this important concept: temperature differences result in pressure differences and this causes the air to move. This is true on all scales from the jet stream and low pressure systems to sea breeze circulations."

Answer 2

Volume flow rate is constant, or conservation of volume flow rate.

Answer 3

Two more reasons:
a. as the wind approaches the city, it is constricted to pass between buildings, and thus will flow faster velocity for the same total volume flow rate.

b. wind velocity is higher as you go to higher altitudes, and the upper parts of the buildings somewhat deflect these higher velocities down toward the streets.