Earth (Image credit: NASA/Science Source/Photo Researchers, Inc.)
Watery World Quiz
by Megan Aemmer


Earth's surface is approximately 70 percent water: lakes, rivers, oceans, streams, and seas. Even your own body is 65 percent water! But how much do you know about the bodies of water that cover the planet we call home? Test your water wisdom.
1
Which river is the longest on Earth?
2
Which river discharges the most water in the world?
3
Which ocean is the smallest in the world?
4
Where is the highest waterfall in the world?
Where is this waterfall? (Image credit: Kjell Sandved/Bruce Coleman, Inc.)
5
Which is the largest body of fresh water in the world?
6
Which is the highest navigable lake in the world?
7
Which lake is the deepest in the world?
8
Where is the deepest spot on Earth?
9
Which of the following bodies of water is the saltiest?
10
A hydroelectric plant on which river has the greatest capacity in the world, at 12,600 megawatts?
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