Q 1. what causes the most difference in the air pressure?

#1. differences in elevation

#2. differential heating

#4. winds

Q 2. when is air pressure highest

#1. when air is moving sideways

#2. when air is sinking

#3. when air is rising

Q 3. air pressure is measured in witch

#1. degrees

#2. millibars

#3. isotherms

#4. isolines

Q 4. what pressure pattern is often associated whith clouds or rain

#1. low temperatures

#2. high temperatures

#3. high pressure

#4. low pressure

1. #2

2. #2

3. #2

4. #4

Explanation:

1. The differences in heating will cause the most variation in air pressure. This is due to the expansion and condensation of air molecules.

2. Air pressure if the highest when the air is moving downward. This pushes down on the earth's surface creating a "heaviness" and pressure is the measurement of external force on an object.

3. Ideally, the unit of pressure if millibars. It is a metric unit that is similar to the standard atmospheric pressure at sea level.

4. Low pressure patterns is associated with low pressure system. This is because the warm air inside a low pressure system will rise and when high enough it will cool to form precipitation.

Q 1. what causes the most difference in the air pressure?

Answer = 1. differential heating

Q 2. when is air pressure highest

Answer = 2. when air is sinking

Q 3. air pressure is measured in witch

Answer = 2. millibars

Q 4. what pressure pattern is often associated with clouds or rain

Answer = 4. low pressure