Why is atmospheric pressure less on top of a mountain than at sea level?
a. It is cooler in the mountains.
b. Denser air sinks to sea level; the air on mountains is lighter.
c. The pressure at every height in the atmosphere is due to the weight of the air above it.
d. None of the above.
Answer : c. The pressure at every height in the atmosphere is due to the weight of the air above it.
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