the water cycle by shana trotter
TRANSCRIPT
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By Shana Trotter
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Earth’s Water
Limited Supply
Never new water, always the same
Water cycle allows us to have water
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Three States Solid
Liquid
Gas
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Water Cycle Overview
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Evaporation Water changes from liquid to gas
Water vapor collects in the air
Evaporates from lakes, oceans, puddles, etc.
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Evaporation Experiment
Step 1: fill a glass measuring cup with water
Step 2: wait one day and mark the new water level
Step 3: repeat step 2 over several days and compare thenew water level to the original level
You will see evaporation!
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Condensation
Water vapor in the air changes from a gas to a liquid
Cool temperatures cause this
The liquid collection forms clouds
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Condensation Experiment Step 1: fill a glass with ice
Step 2: let it sit on the counter for a few minutes
Step 3: observe the water droplets that appear on the outside of the glass
How did they get there?
Condensation
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Precipitation Clouds can only hold so much water
They get heavy and the water must leave
Forms
Rain
Sleet
Snow
Hail
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Forms of Precipitation
http://www.youtube.com/watch?v=kFFHo4T-g4E
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Collection Water falls back to earth and could land
In oceans, lakes, rivers, etc.
On land
Water on land may runoff into a body of water or become groundwater
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Groundwater Water that seeps into the ground following
precipitation
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Sources Slide 3 Water Cycle Diagram:
http://www.kidzone.ws/water/
Slide 5 Picture: ga.water.usgs.gov
Slide 6 Picture: melindahinsonneely.com
Slide 8 Picture: etc.usf.edu
Slide 10 Video: uploaded by afreshourhttp://www.youtube.com/watch?v=kFFHo4T-g4E
Slide 11 Picture: lvwash.org
Slide 12 Picture: myteacherpages.com
Slide 13 Animation: cnobleza.wordpress.com