atmospheric circulation Flashcards
1
Q
what is atmospheric circulation?
A
the large scale movement of air, controls the distribution of thermal energy across the Earths surface.
2
Q
4 steps of atmospheric circulation?
A
- air has weight because of gravity
- because of weight exerts pressure
- as air is heated it expands = lower density + low air pressure
- as temperatures vary (due to seasons), areas of high pressure and low pressure exist.
3
Q
wind:
A
air that moves from areas of high pressure to low pressure is referred to as wind.