One cup of water doesn't weigh much, but it isn't enough for anyone to drink each day—in space or on earth! The human body needs more water than that...but how much?

2 quarts (4 lbs/1.8 kg)	1 gallon (8 lbs/3.6 kg)	10 gallons, freeze-dried (1 ounce/27 grams)

© The Children's Museum of Indianapolis, 1999