| A | B |
|---|
| Atmospheric Pressure | the weight of the atmosphere pressing down on any point of the surface of Earth. |
| Monsoon | a seasonal wind. |
| Orographic Effect | the precipitation that occurs when moist air rises up the side of a mountain. |
| Rain Shadow | a dry area on the downwind side of a mountain. |
| Climate | the pattern of weather over a long period of time. |
| Peninsula | a long, narrow stretch of land that is surrounded by water on three sides. |
| Atmosphere | the layer of air that surrounds Earth. |
| Upwind | against the direction that the wind is blowing. |
| Downwind | in the direction that the wind is blowing. |
| Capital City | a city that is the governmental city of a country or region. |
| Delta | the triangle-shaped deposit of sand and sediment that occurs where a river flows into an ocean. |
| Tropical Cyclone | a severe storm with high winds that spiral around a calm center. |
| Desert | a geographic region with too little rainfall to support much plant life; also a vegetation zone. |
| Drought | an unusually long period in which little or no rain falls. |
| Semiadrid | dry, with little rainfall; also a climate or climate zone with hot, dry summers and cool, dry winters. |
| Runoff | water from rainfall that is not absorbed into the soil and instead flows into streams or lakes. |
| Evaporation | the process by which a liquid, such as water, turns into a vapor, or gas. |
| Cloud Seeding | the scattering of chemicals into clouds to bring about rain. |
| Precipitation | moisture that falls from the sky as rain, snow, sleet, or hail. |
| Tundra | a climate zone with very cold winters, cold summers, and little rain or snow. |
| Permafrost | a layer of soil beneath Earth's surface that is always frozen. |
