2) what is altitude?

a) The distance from the ocean
b) The height above the surface of the earth
c) The amount of water in the air
d) The amount of pressure that air exerts

3) Which of the following is the most responsible for the creation of winds?

a) Earths revolution around the sun
b) air pressure differences that make air rise or sink
c) The presence of rain or snow
d) the layer of the atmosphere

4) Which of the following best refers to an air mass that forms over tropical land?

a) TC
b) AC
c) TE
d) PM

5) Which of the following best defines a warm front

a) place where warm air sinks under cold air .
b) place where warm air meets cold air and both stay still .
c) place where warm air pushes down cold air .
d) place where warm air rises over cold air .

6) as temperature increases , air pressure decreases .
a) true
b) false

7) land warms faster than water during the day and so air breezes move from the land to the sea during the day .
a) true
b) false

8) a low pressure system usually brings clouds and rain
a) true
b) false