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weather and the water cycle
| Question | Answer |
|---|---|
| atmosphere | blanket of air surrounding the earth |
| water cycle | the sun warms water on Earth's surface, the water evaporates, rain falls back into the ocean or onto land |
| evaporation | process by which liquid water changes to gas |
| condensation | process by which water changes from a gas to a liquid |
| troposphere | the layer of atmosphere closest to the Earth's surface |
| air pressure | weight of the atmosphere pressing down on Earth |
| air mass | large body of air that has the same temp and humidity throughout-can be warm or cold |
| local wind | a wind that results from a local difference in temperature |
| front | a border where 2 masses meet |
| prevailing winds | global winds that blow from the same direction |
| climate | pattern of weather that an area experiences fo a long time |
| humidity | amount of water vapor in the air |
| precipitation | water that falls from the atmosphere to Earth |
| forms of solid precipitation | snow, sleet, hail |
| liquid precipitation | rain |
| types of clouds | cumulus, stratus, cirrus |
| cumulus clouds | puffy, indicate fair weather |
| cirrus clouds | mostly made of ice, form high in the atmosphere where it is very cold |
| stratus clouds | form low in the atmosphere, can bring moderate rain or snowfall |
| cooler and drier | after a cold front passes the weather is |
| warm and humid | after a warm front passes |
| troposphere | the layer of Earth's atmosphere where most weather occurs |