AQA Geography 2. Weather Hazards - Tropical Storms

All air is under pressure but if it is rising then the air is said to be unstable and the pressure is _______

• higher
• lower

In some circumstances, air pressure can be extremely ___ and this might influence the formation of tropical storms.

• low
• high

The _____________ is the largest cell and extends from the equator to between 30 and 40⁰ North and South.

• Hadley Cell
• Polar Cell
• Ferrel Cell

In these latitudes the cooler air from the poles meets the warmer air from the tropics, causing air to rise. 

• Polar Cells
• Ferrel Cells
• Hadley Cells

The _________ cells are found between 60 and 70⁰ North and South. These are typically colder and feature denser air. 

• Polar Cell
• Hadley Cell
• Ferrel Cell

A Polar front is.....

• The pressure caused by the weight of air at any point on the Earths surface
• The effect, caused by the rotation of the earth
• The boundary between a Polar cell and Ferrel cell

The rising air in the Hadley cell at the equator forms an area of _____ pressure at the surface.

• high
• low

Where the warm air rises at the polar front, another area of ____ pressure is formed.

• high
• low

Working in the direction from the North Pole to the equator, what is the correct sequence for the three cells.

• Hadley cell, Polar cell, Ferrel cell
• Polar cell, Hadley cell, Ferrel cell
• Polar cell, Ferrel cell, Hadley cell
• Hadley cell, Ferrell cell, Polar cell

Air moves from high pressure to low pressure.

• True
• False