1. Is that all? Information and pictures from USGS “Water Science for Schools” Website http://ga.water.usgs.gov/edu/index.html -I did a demo with 100 M&M’s to represent 100% of Earth’s Water. If the students guessed the correct percentage of water available for human use they get to eat that number of M&M’s -The correct answer is 1/100 of an M&M (basically a fleck from the candy shell).

2. Earth’s Water A picture showing all Earth's water (liquid, ice, freshwater, saline) as a sphere. It would be about 860 miles in diameter (about the distance from Salt Lake City, Utah to Topeka, Kansas, USA). Credit: Illustration by Jack Cook, Woods Hole Oceanographic Institution; USGS.

3. Water We Can Use

8. BrainPOP “Water Supply” http://www.brainpop.com/science/earthsystem/water supply/ http://www.brainpop.com/science/earthsystem/water supply/