The Water Cycle

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The Water Cycle
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The Water Cycle
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Key Terms

• Evaporation The process where a liquid changes
  into a gas when the temperature rises.
• Condensation The process where a gas (like
  water vapour) changes into a liquid when the
  temperature lowers.

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Key Terms

• Precipitation After a gas, like water vapour,
  condenses, it may fall back to Earth in the form
  of rain, snow, sleet, or hail.
• Runoff Water that collects at the Earths
  surface from precipitation. It will form rivers,
  lakes, and may eventually flow to an ocean.

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• Infiltration Water that seeps into the ground
  and may become part of the water table.
• Transpiration Water released into the
  atmosphere through the leaves of plants.

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The Water Cycle in a Nutshell

• Water, in its different forms (liquid, solid,
  gas) cycles continuously through the atmosphere.
• Water evaporates into the atmosphere from the
  land and sea.
• Once in the air, water vapour circulates and can
  condense to form clouds and precipitation, which
  fall back to Earth
• Plants and animals use and reuse water and
  release water vapour into the air.

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• Water is essential for life on Earth. It is
  recycled through the water or hydrologic cycle.

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Recycling

• The water used today is from millions of years
  ago it is recycled.

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