Which amongst the following is NOT a characteristic of Trade Winds?

1. They have varying velocity and are irregular
2. They are permanent or prevailing winds
3. They are called North-East Trades in Northern Hemisphere
4. They have fixed velocity and are regular

Alps : …………… :: Rockies : ……………

1. Chinook, Mistral
2. Polar Easterlies, Foehn
3. Foehn, Mistral
4. Chinook, Foehn

The concentrated bands of rapid air movement at the tropopause:

1. Jet Streams
2. Tornado
3. Mistral
4. Wave Cyclones

Which of the following is true about Jet streams?

1. Forecast weather
2. Reduce flight time
3. Increase precipitation
4. All of the above.