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The Water Cycle
   By Colleen Lierman
What is the Water Cycle?
• Process where water circulates through the
  atmosphere
• 4 processes that occur during Water Cycle
  – Evaporation
  – Condensation
  – Precipitation
  – Collection
Evaporation
• The process where water because vapor
• Water evaporates into the atmosphere
Example of Evaporation
• After rainfall, water “evaporates” from the
  ground
• Changes from a liquid to a gas
Where Does The Water Come From?
• Oceans
  – Comes mostly from here
• Lakes
• Ponds
• Rivers
Fresh Water
• 97% ocean water
• About 3% fresh water
  – Of the 3 percent: 2.15% glaciers, 0.62% ground
    water
The 4 Oceans
•   Pacific
•   Indian
•   Atlantic
•   Artic
Condensation
• Process where vapor turns into a liquid state
Example of Condensation
• Dew on the windows of a car early in the
  morning
• Water dripping from your cup on a hot day
Precipitation
• Any form of liquid or solid that comes from
  atmosphere
Examples of Precipitation
•   Snow
•   Hail
•   Rain
•   Sleet
Collection
• When a substance that falls from the
  atmosphere goes back into a lake, ocean, or
  river
• Can also be soaked into the ground
• Process starts over at this step
Example of Collection
• Water runs off into a body of water
• Some water absorbs into ground
• Rivers, lakes, or oceans can over fill because of
  excessive rainfall causing a flood
Can We Drink Rain Water?
• Unsafe to drink
• Contains:
  – Bacteria
  – Pollutants
  – Soil
What Contaminates Ground Water?
•   Oil spills
•   Landfills
•   Septic Tanks
•   Animal Waste
•   Ground Fertilizer
References
The Water Cycle
Evaporation
Condensation
Pond
Precipitation
Snow
Notes from Martin Steinbis PowerPoint Slides
(Geology 100)

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