Evaporation
The sun warms the surface of the sea and water turns to vapour, rising into the air. Most of the vapour in the atmosphere comes from the oceans.
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The sun warms the surface of the sea and water turns to vapour, rising into the air. Most of the vapour in the atmosphere comes from the oceans.
Plants draw water up from the soil through their roots and release it as vapour from their leaves.
Rising air cools, and its vapour condenses on tiny particles of dust and salt into the droplets that make up clouds.
When cloud droplets grow heavy enough they fall: as rain, or as snow, sleet or hail when the air is cold enough.
Water can be held for months or years as snowpack and glaciers, and released as meltwater when the weather warms.
Rain and meltwater that the ground cannot soak up flow over the surface into streams and rivers, and on towards the sea.
Some water soaks into the ground, moving down through the soil and into the rock beneath.
Water filling the spaces in soil and rock below the water table. It moves slowly, feeding springs and rivers and seeping towards the sea.
The oceans hold nearly all of the Earth's water, and it is from their surface that most evaporation happens.