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Weather
| Term | Definition |
|---|---|
| troposphere | atmosphere layer closest to Earth. Weather occurs here |
| Stratosphere | second layer up.Where ozone layer is located |
| Mesosphere | middle layer of atmosphere. meteoroids burn up here |
| thermosphere | fourth layer up. Hottest layer. aurora are here |
| exosphere | outer atmosphere layer. Satellites here. |
| altitude | height above Earth's surface |
| atmosphere | blanket of air surrounding Earth. |
| air composition | 78%nitrogen, 21% oxygen, 1% water vapor and carbon dioxide. |
| radiation | energy from the sun |
| heat | energy transferred from a hotter object to a cooler one |
| convection | heat transfer by the movement of a liquid or gas |
| greenhouse effect | a natural process that keeps Earth's temperature comfortable |
| global warming | a theory that predicts that the increase in carbon dioxide in the atmosphere will cause changes to Earth |
| energy budget | the way Earth interacts with the sun's energy. Usually energy in = energy out. |
| stratus cloud | low, flat gray, covers sky, smooth. indicates bad weather |
| cirrus cloud | high, feathery, made of ice crystals. No precipitation but indicate bad weather |
| cumulus cloud | white, puffy, flat bottom, fair weather |
| cumulonimbus | many cumulus clouds, angry, dark, tall, very large. They bring thunderstorms and heavy rain |
| anemometer | measures wind speed |
| hygrometer | measures humidity |
| barometer | measures air pressure |
| thermometer | measures temperature |
| air mass | a large body of air with similar temperatures, air pressure, and humidity |
| weather front | forms when two different air masses meet |
| cold front | forms when a cold air mass pushes into a warm air mass |
| warm front | forms when a warm air mass pushes into a cold air mass |
| wind | created when air moves from an area of high pressure to an area of low pressure |
| weather | condition of atmosphere at a certain time and place |
| meteorologist | scientists who study the weather |
| weather report | report of current conditions |
| weather forecast | a weather prediction |
| hurricane | circular storm that forms over warm tropical water |
| tornado | strong circular wind storm that forms over land |