Air is heated at the ____ as this is the zone of maximum heating. Warm air ____ at the Equator creating an area of ____ pressure. Upper atmospheric winds push air towards the poles - and it cools and sinks at the ____. This creates an area of ____ pressure. Some of this air returns to the equatorial low pressure as the ____ winds, and this forms the ____ Cell. The remainder of the air travels north over the surface (creating the ____) ____ meet cold air at the polar front. Where the warm air meets the cold air, it causes the air to ____ creating another area of low pressure. Some of this air flows in the upper atmosphere to the Poles where it ____ forming the ____ Cell. The remainder of this air in the upper atmosphere travels south and sinks at the tropics to complete the ____ Cell. The spinning of the earth creates the ____ Effect which deflects these winds to the ____ in the northern hemisphere. The Hadley and the Polar Cell are ____ direct, the Ferrel is driven by the other two.

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