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water cycle

the continuous movement of water between Earth's surface and the air, changing from liquid to gas to liquid


to act on or affect each other


the process by which water changes from liquid form to an atmospheric gas


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


the falling to earth of any form of water (rain or snow or hail or sleet or mist)


the process in which water pools in large bodies (like oceans, seas and lakes)


the condition of Earth's atmosphere at a particular time and place


the weather in some location averaged over some long period of time

weather map

A map that shows data about recent weather conditions across a large area

weather symbols

signs used by meteorologists to convey a certain type of condition at a given time.


scientific reasoning based on an observation

map key

an explanation of what the symbols on a map represent


a prediction about how something (as the weather) will develop

rain gauge

instrument used to measure rainfall


measuring instrument for measuring temperature


an instrument used to measure wind speed


an instrument that measures atmospheric pressure

wind vane

a tool that shows the direction from which the wind is blowing

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