ESS
Grade-9
Easy
Question
What effect does altitude have on air pressure?
- It causes it to swirl.
- The air pressure is lower at the top of a mountain and higher at sea level.
- Altitude and air pressure don't get along. They are constantly fighting.
- The air pressure is lower at the base of a mountain and higher above sea level.
Hint:
The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth.
The correct answer is: The air pressure is lower at the top of a mountain and higher at sea level.
Atmospheric pressure: It can be defined as the total weight of air over a unit area at any given elevation.
As the height increase, the amount of air over a unit area decreases. Hence, the atmospheric pressure will reduce too.
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