Human beings and life on Earth more generally requires water, so it’s well worth knowing more about water, and just how much of the Earth’s abundant water is actually available for consumption. Take this quiz to learn more.


1. What percentage of the Earth’s surface is covered by water?


2. What percentage of water on Earth is freshwater, as opposed to salinated (salty) water?


3. What percentage of freshwater is locked up in glaciers and ice caps?


4. Which of the following is the greatest consumer of water in the United States?


5. Which two U.S. states consume the most water?