6.9 Atmospheric Pressure Flashcards
1
Q
What does the air exert at right angles to the surface of any object?
A
Atmospheric pressure
2
Q
Why is the atmospheric pressure higher when you are lower down?
A
The lower you are, the more atmosphere there is above you, so the higher the atmosphere pressure is.
3
Q
Why does the density of the atmosphere get higher the closer you are to sea level?
A
This is because the weight of the air above pushes down on the air below it, compressing it - the closer to sea level you are, the more air there is above you so the more the air around you is compressed.
4
Q
Why is atmospheric pressure lower at a higher elevation?
A
At higher elevation (altitude) the gas particles are more spread out, so they generate less pressure.
