Global Atmospheric Circulation Quiz

What is the direct result of intense insolation at the thermal Equator?

• Sinking air

• Condensation

• Evaporation

• Rising air

Where does the ITCZ move during the Northern Hemisphere summer?

• North

• Disappears

• South

• Remains stationary

What is the junction between the Ferrell and Polar cells called?

• ITCZ

• Sub-tropical high

• Equatorial low

• Polar front

Where are the polar jet streams located?

• 10° N or S

• 25° N or S

• 50° N or S

• 70° N or S

What causes the formation of Rossby waves?

• Strong N to S temperature gradient

• Strong E to W temperature gradient

• Coriolis force

• High pressure ridge

What is the primary function of the upper westerlies?

• Creation of high pressure

• Creation of low pressure

• Horizontal mixing of air

• Vertical mixing of air

What happens when the upper westerlies cross a very high mountain range?

• They slow down

• They speed up

• They disappear

• They change direction

What is the main effect of Rossby waves on the weather?

• Warmer temperatures

• Reduced wind speed

• Increased rainfall

• Colder temperatures

What is the main cause of convergence at the surface when there is a low pressure in the upper airflow?

• Air moves towards the equator

• Air slows down

• Air flows towards the poles

• Air speeds up

What is the primary function of the polar front?

• Vertical mixing of air

• Creation of high pressure

• Separation of air masses

• Creation of low pressure