Ecology: Water Cycle (Gaseous Cycle)

What is it?

  • The hydrological cycle encompasses the ongoing movement of water within the Earth-Atmosphere system.

Process Involved

  • Evaporation: A material changes from a liquid to a gas through evaporation.
  • Transpiration: Water from plants evaporates through stomata during transpiration.
  • Condensation: Condensation is the process by which atmospheric water vapour transforms into a liquid state. Condensation in the atmosphere can take the form of clouds or dew.
  • Precipitation: When the tiny condensation particles grow too large through collision and coalescence for the rising air to support, they form precipitation and fall to the ground.
  • Runoff: When the earth is saturated and there has been a lot of precipitation, runoff occurs (cannot absorb any more water). Runoff causes rivers and lakes to form.

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