the water cycle by shana trotter
TRANSCRIPT
By Shana Trotter
Earth’s Water
Limited Supply
Never new water, always the same
Water cycle allows us to have water
Three States Solid
Liquid
Gas
Water Cycle Overview
Evaporation Water changes from liquid to gas
Water vapor collects in the air
Evaporates from lakes, oceans, puddles, etc.
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!
Condensation
Water vapor in the air changes from a gas to a liquid
Cool temperatures cause this
The liquid collection forms clouds
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
Precipitation Clouds can only hold so much water
They get heavy and the water must leave
Forms
Rain
Sleet
Snow
Hail
Forms of Precipitation
http://www.youtube.com/watch?v=kFFHo4T-g4E
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
Groundwater Water that seeps into the ground following
precipitation
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