CREDITS

Graphic by Cyrus Huneycutt

SOURCES

Aviation weather - principles. (n.d.). Free Online Private Pilot Ground School. Retrieved July 27, 2012, from http://www.free-online-private-pilot-ground-school.com/Aviation-Weather-Principles.html
How much does a cloud weigh? (2009, August 8). Green Earth Facts. Retrieved July 27, 2012, from http://greenearthfacts.com/weather/how-much-does-a-cloud-weigh/
A cloud weighs more than you might think. (2011, January 13). Zidbits. Retrieved July 27, 2012, from http://zidbits.com/2011/01/a-cloud-weighs-more-than-you-might-think/