Global Winds & the Jet Stream

Which global winds have the greatest impact on the weather in the US?

• trade winds
• prevailing westerlies
• doldrums
• polar easterlies

Winds are caused by 

• equal heating 
• unequal heating

Which best describes a characteristic of the jet stream? 

• A It forms a boundary between a cold air mass and a warm air mass.
• B It creates the high winds around the eye of a hurricane.
• C It forces the hot air along the equator to rise to areas in North America.
• D It causes high pressure air masses to rotate clockwise.

Which is most responsible for guiding the movement of different air masses across the United States?

• the oceans
• trade winds
• the jet stream
• easterly winds

What causes wind?

• convection currents
• conduction currents
• radiation currents
• tropical currents

Which types of winds cause weather in North Carolina?

• polar easterlies
• prevailing westerlies
• polar westerlies
• prevailing easterlies

How does the jet stream affect the weather?

• The jet stream transports weather systems that affect us.
• The jet stream does not affect the weather.
• The jet stream releases oxygen so we can breathe.
• The jet stream brings only bad weather.

What will most likely result when the jet stream moves south of North Carolina? 

• A North Carolina will experience tropical weather conditions.
• B North Carolina will experience hot, dry weather.
• C North Carolina will experience mild weather.
• D North Carolina will experience cold weather.

In which direction do prevailing westerlies flow?

• from east to west
• from west to east
• from north to south
• from south to north

When air is heated, it will MOST likely

• expand and fall
• expand and rise
• condense and fall
• condense and rise