Weather and Climate

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temperate

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seasonably variable climate zone between 40 and 60 degrees latitude, north or south of the equator

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humidity

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moisture in the air

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water cycle

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the continual movement of water among Earth's atmosphere, oceans, and land surface through evaporation, condensation, and precipitation

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weather

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day-to-day changes in atmospheric conditions, including temperature, air pressure, humidity, wind, cloud coverage, or precipitation

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precipitation

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any form of water that falls from clouds and reaches Earth's surface

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climate

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the long-term average of weather patterns in a particular area over a significant period of time

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evaporation

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the process by which water molecules in liquid water escape into the air as water vapor

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condensation

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the process by which molecules of water vapor in the air become liquid water

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atmosphere

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the layer of gases surrounding Earth, essential for weather and climate

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air pressure

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the pressure caused by the weight of a column of air pushing down on an area