The earth is affected by unequal heating from the sun. This causes warm air to expand and rise up while cold air condenses and sink which makes wind.

Winds that blow from a single direction over a particular point on the Earth's surface.

Very high winds in the middle latitudes between 35 and 65 degrees latitude.Found 20,000 - 30,000 feet above.

Strong, high level wind that can reach speeds in excess of 20 mph usually occurring 6 - 9 miles above ground. They often steer the movement of surface air masses and weather systems.

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weather 3

Term	Definition
wind formation	The earth is affected by unequal heating from the sun. This causes warm air to expand and rise up while cold air condenses and sink which makes wind.
prevailing winds	Winds that blow from a single direction over a particular point on the Earth's surface.
westerlies	Very high winds in the middle latitudes between 35 and 65 degrees latitude.Found 20,000 - 30,000 feet above.
jet stream	Strong, high level wind that can reach speeds in excess of 20 mph usually occurring 6 - 9 miles above ground. They often steer the movement of surface air masses and weather systems.