Jet Stream

What are jet streams?

• The trail left from an airplane.

• Bands of strong wind.

• The winds that push jets through the air.

• Wind made from tornadoes.

Where are the two polar jet streams located?

• Near the north and south poles.

• Near the equator.

• You can't tell.

• Only near the north pole.

Where are the subtropical jet streams located?

• Near the north and south poles.

• Near the equator.

• They go between the poles and the equator.

• There aren't any subtropical jet streams.

What causes jet streams?

• They are caused due to large thunderstorms.

• No one knows.

• They form when warm air meets cold air.

• Too many jets in the air at one time.

What season do jet streams travel the fastest?

• Winter

• Spring

• Summer

• Fall

• The season doesn't impact jet stream speed.

Which best describes a characteristic of the jet stream?

• It forms a boundary between a cold air mass and a warm air mass.

• It creates the high winds around the eye of a hurricane.

• It forces the hot air along the equator to rise to areas in North

  America.

• It causes high pressure air masses to rotate clockwise.

Which does not describe the subtropical jet accurately

• Centered near 30 degree latitude in winter hemisphere

• Fastest speed in western Pacific region

• Meanders north and south

• Very steady

Which is NOT TRUE about Polar jetstream

• Driven by thermal-wind effects

• Meander extensively south and north

• Core altitude is about 9km

• Very stable

What is the characteristics of baroclinicity?

• Isobars parallel to the isotherms

• Isobars cross the isotherms

In order to conserve its angular momentum, a parcel of air moving from equator to subtropical will

• increase its speed.

• decrease its speed.

• remain same speed.