Global Atmospheric Circulation

What is wind?

• Large scale movement of air caused by differences in air pressure

• Large scale movement of CO2 caused by differences in air pressure

Differences in air pressure are caused by...?

• Differences in the earths rotation

• Differences in temperature

• Differences in rainfall

• Differences in sea level

Winds move from...

• high pressure to low pressure

• low pressure to high pressure

Warm air...

• sinks

• rises

Cold air ...

• sinks

• rises

Where place experiences warm temperatures with clouds and rain?

• The equator

• The sub-tropical highs

• The sub-polar lows

• The polar highs

True or false - warm air rises, cools and condenses and forms clouds.

• True

• False

What are trade winds?

• Surface winds blowing towards the equator

• Atmospheric winds

• Winds blowing away from the equator

• Low pressure winds

Surface winds blowing towards the poles are called ...

• westerlies

• easterlies

• southerlies

• northerlies

If the Earth did not rotate, air at the Equator would simply

• Sink and move toward the poles.
• Rise and move toward the poles.
• Stay stationary.
• None of the above.