Water Science for Schools

Challenge Question #1
How much water does it take to grow a hamburger?

The fact is that we need water to grow or produce pretty much everything we eat.This water is either supplied by nature as precipitation and/or added by man during the growing/production process. You can't tell by the size or texture of a food how much water was actually used to produce the food item.

Here's a list of some common foods - try to guess how many gallons of water it takes to produce a single serving (or the amount noted) of each one:

Almonds: 0 gallons 1 gallon 6 gallons 12 gallons 24 gallons		Orange: 0 gallons 1 gallons 7 gallons 14 gallons 23 gallons 85 gallons		French Fries: 0 gallons 6 gallons 12 gallons 25 gallons 100 gallons 300 gallons
Hamburger: 0 gallons 15 gallons 150 gallons 800 gallons 1,300 gallons 2,600 gallons		Lettuce: 0 gallons 1 gallon 6 gallons 16 gallons 30 gallons 90 gallons		Milk: 0 gallons 5 gallons 15 gallons 30 gallons 50 gallons 65 gallons 100 gallons
Rice: 0 gallons 5 gallons 35 gallons 55 gallons 100 gallons 250 gallons		Tomatoes: 0 gallons 3 gallons 10 gallons 30 gallons 45 gallons		Watermelon: 0 gallons 10 gallons 20 gallons 50 gallons 75 gallons 100 gallons
1 Egg: 0 gallons 5 gallons 30 gallons 90 gallons 120 gallons 200 gallons		Bread (Loaf): 0 gallons 2 gallons 10 gallons 50 gallons 100 gallons 150 gallons		1 Car: 0 gallons 1,000 gallons 18,000 gallons 39,000 gallons 73,000 gallons 140,000 gallons

Finished? You can or