A narrow band of strong air currents encircling the globe is called _____

• an airship draft
• an aircraft flow
• a jet stream
• a plane current

Jet streams are caused by the _____

• even heating of the atmosphere
• uneven heating of the atmosphere
• even heating of the hydrosphere
• uneven heating of the hydrosphere

How high are jet streams above the Earth's surface?

• about 1 kilometer
• about 10 kilometers
• about 100 kilometers
• about 1000 kilometers

A body of air with the same temperature, humidity and pressure throughout is called _____

• a  cloud
• a jet stream
• an ocean current
• an air mass

Moving air can affect _____

• the continents
• the weather
• the equator
• the poles

Warm water is transported from the equator toward the poles by _____

• ocean currents
• sea breezes
• land breezes
• the jet stream

Without jet streams and ocean currents a lot of the Earth would be _____

• incredibly hot all the time
• unspeakably cold
• uninhabitable
• very pleasant

The British Isles are pretty far north, so we might expect them to have _____

• a cold climate
• a hot climate
• a dry climate
• a wet climate

Which ocean current, in particular, helps keep the British Isles warm?

• the North Equatorial Current
• the Labrador Current
• the Gulf Stream
• the South Equatorial Current

Which jet stream has the greatest effect on the British Isles?

• the tropical jet stream
• the subtropical jet stream
• the polar jet stream
• the arctic jet stream