The USGS Water Science School
This is the Challenge Questions section of the Activity Center. Here we'll challenge you to see if you know the answers to intriguing questions about water, such as "Are raindrops tear shaped?", and "How much water does it take to grow a hamburger?"
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://ga.water.usgs.gov/edu/activity-challenges.html
Page Contact Information: Howard Perlman
Page Last Modified: Thursday, 10-Jan-2013 09:59:31 EST
