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How do evaporation, condensation, and precipitation connect the oceans and continents?
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Earth
A composite image of Earth captured by instruments aboard NASA's Suomi National Polar-orbiting Partnership satellite, 2012.
Evaporation, condensation, and precipitation are fundamental processes of the water cycle that continuously circulate water between the oceans and continents, sustaining life on Earth.12
- Evaporation: Driven by solar radiation, water evaporates primarily from the oceans, transitioning from a liquid to a gaseous state (water vapour) and entering the atmosphere.341
- Transport and Condensation: This invisible water vapour is carried over land by wind. As the air cools—often due to rising over mountain slopes or mixing with different air masses—it reaches its dew point, causing the vapour to undergo condensation into clouds.567
- Precipitation and Return: The condensed water falls onto the continents as precipitation (rain or snow). Once on land, this water replenishes groundwater and flows through rivers and runoff back into the oceans, completing the cycle.3182
This continuous exchange is essential for the planet's habitability, as it redistributes moisture, shapes the landscape through erosion, and supports terrestrial ecosystems.52