Water in the Atmosphere

Front

Water Cycle Noun

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[waw-ter sy-kuhl]

Back

Water Cycle

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The continuous movement of water on, above, and below the surface of the Earth, driven by solar energy and gravity.

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Example: The image shows the water cycle stages like evaporation, condensation, and precipitation with clear labels and arrows.

Front

Evaporation Noun

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[ih-vap-uh-rey-shuhn]

Back

Evaporation

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The process by which molecules of liquid water are heated by the sun and change into a gas called water vapor.

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Example: The sun heats the puddle, causing water to evaporate into the air.

Front

Condensation Noun

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[kon-den-sey-shuhn]

Back

Condensation

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The process by which water vapor in the air cools down and changes back into liquid water droplets.

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Example: Warm moist air hits a cold surface, turning into water droplets, showing condensation.

Front

Dew Point Noun

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[doo point]

Back

Dew Point

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The specific temperature at which air becomes saturated with water vapor and condensation begins to form on surfaces.

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Example: The image shows how dew point is the temperature where air becomes saturated and clouds form.

Front

Humidity Noun

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[hyoo-mid-i-tee]

Back

Humidity

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A measure of the total amount of water vapor that is present in the air at any given time.

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Example: The image shows different humidity levels using water droplets, illustrating how much water vapor is in the air.

Front

Relative Humidity Noun

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[rel-uh-tiv hyoo-mid-i-tee]

Back

Relative Humidity

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The percentage of water vapor in the air compared to the maximum amount the air can hold at that temperature.

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Example: Water droplets show different humidity levels, illustrating how much water vapor is in the air.

Front

Precipitation Noun

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[pri-sip-i-tey-shuhn]

Back

Precipitation

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Any form of water, such as rain, snow, sleet, or hail, that falls from clouds to Earth's surface.

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Example: Clouds releasing rain and snow show different forms of precipitation.

Front

Cycle Noun

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[sy-kuhl]

Back

Cycle

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A series of events or processes that are regularly repeated in the same specific order over and over again.

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Example: This diagram shows the water cycle, illustrating evaporation, condensation, and precipitation in a continuous loop.

Front

Transpiration Noun

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[tran-spuh-rey-shuhn]

Back

Transpiration

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The process where plants absorb water through their roots and then release water vapor from pores in their leaves.

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Example: The image shows how plants take in water through roots and release it as vapor from leaves.

Front

Respiration Noun

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[res-puh-rey-shuhn]

Back

Respiration

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The process in animals of releasing water vapor into the atmosphere during exhalation, or breathing out.

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Example: The diagram shows how air moves through the respiratory system, highlighting alveoli where gas exchange occurs.