| A | B |
|---|
| wind | the movement of air caused by differences in air pressure |
| convection cells | large circular pattern that air travels in |
| pressure belts | bands of high pressure and low pressure found at about every thirty degree latitude |
| Coriolis effect | the apparent curving of the path of a moving object from an otherwise straight path due to the Earth's rotation |
| polar easterlies | the prevailing winds that blow from east to west between sixty degrees and ninty degrees latitude in both hemispheres |
| westerlies | prevailing winds that blow from west to east between thirty degrees and sixty degrees latitude in both hemispheres |
| trade winds | prevailing winds that blow northeast from thirty degrees north latitude to the equator and that blow southeast from thirty degrees south latitude to the equatro |
| jet stream | a narrow belt of strong winds that blow in the upper troposphere |
| air pollution | the contamination of the atmosphere by the introduction of pollutants from human and natural sources |
| acid precipitation | rain sleet or snow that contains a high concentration of acids |
