Clouds form through a process involving evaporation and condensation, fundamentally changing water's state.
The Cloud Formation Process: Evaporation and Condensation
Here's a breakdown of how evaporation leads to cloud formation:
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Evaporation: Fast-moving liquid water molecules on Earth's surface gain heat energy. This heat transforms the water from a liquid state into a gaseous state, becoming water vapor. This process is evaporation.
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Rising Water Vapor: The water vapor, now a gas, rises into the atmosphere.
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Cooling and Condensation: As the water vapor rises, it encounters colder air. This causes the water vapor molecules to lose energy and slow down.
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Droplet Formation: The water vapor molecules then join together, a process called condensation, forming tiny liquid water droplets. These droplets are so small they remain suspended in the air.
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Cloud Formation: When countless of these tiny water droplets group together, they become visible as clouds. Evaporation + Condensation = Clouds!
A Summary
Stage | Description |
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Evaporation | Liquid water becomes water vapor due to heat. |
Rising | Water vapor ascends into the atmosphere. |
Condensation | Water vapor cools and transforms into tiny liquid water droplets. |
Cloud Formation | Accumulation of water droplets becoming visible as clouds. |