| A | B |
|---|
| wind | the movement of air caused by differences in air pressure |
| convection cells | large circular patterns of air |
| pressure belts | bands of low and high pressure found at about every 30 degrees of latitude on the Earth |
| Coriolis effect | the apparent (looks like) curving of the path of a moving object from an otherwise straight path because the Earth is rotating |
| polar easterlies | wind belts blowing cold sinking air from the poles to 60 degrees latitude north and south |
| westerlies | wind belts that blow moist air producing rain and snow toward the poles from west to east between 60 and 30 degress latitude north and south |
| trade winds | prevailing winds that blow between 30 degrees and the equator; curve to the west in the northern hemisphere and to the east in the southern hemisphere |
| doldrums | winds near the equator that are warm and create an area of low pressure; they have very little wind |
| horse latitudes | areas of high pressure and very dry air that make weak winds at 30 degrees north and south latitudes |
| jet stream | a narrow belt of strong winds that blow in the upper troposphere and lower stratosphere |
| local winds | usually move short distances and can blow from any direction |
