ACT Preparation / Unit 22 ACT 2127 short lesson, about 20 seconds
The Water Cycle
Captions available
The idea
The water cycle is driven by the sun's energy: water evaporates from oceans and other surfaces, condenses into clouds, and falls back as rain or snow.
In practice
Puddles drying after a storm return water to the air, to fall again somewhere else.
Where people slip
Ice can also pass straight into vapor, by sublimation, skipping the liquid stage.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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