#15 Water cycle
Published on Mar 23, 2016
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PRESENTATION OUTLINE
Water cycle
- The earth has a limited amount of water.
- The water keeps it going around and around.
- In what we call a ''water cycle''.
Photo by Atmospheric Infrared Sounder
Evaporation
- Evaporation is when the sun heats up water in rivers or lakes or the ocean and turns it into vapor or steam.
- The water vapor leaves the river , lake or ocean and goes in air.
Photo by revedavion.com
Condensation
- water vapor in the air gets cold and changes back into liquid, forming clouds. This is called condensation.
Photo by Sergiu Bacioiu
Precipitation
- Precipitation occurs when so much water has condensed that the air cannot hold it anymore.
- The clouds get heavy and water falls back to the earth in the form of rain, hails, sleet or snow.
Photo by chrismetcalfTV
Collection
- When water falls back to earth as precipitation it may fall back in the oceans, lakes or rivers or it may end up on land,it will either soak into the earth and become a part of the ''ground water'' that plants and animals use to drink or it may run over the soil and collect the oceans ,lakes or rivers where the cycle start.
Photo by tinyfroglet
