Lakes Quiz

How this quiz works

1. 1. Start a run — 10 Lakes questions, or a single difficulty.
2. 2. Answer one at a time — explanations stay hidden until the end.
3. 3. Review and retry — see what you missed, then run it again.

Lakes

Lakes are inland bodies of water surrounded by land, ranging from small alpine lakes to enormous freshwater and saltwater lakes that cover thousands of square kilometers. They form through a variety of natural processes, including glacial activity, volcanic eruptions, tectonic movements, river erosion, and landslides. Some lakes exist for millions of years, while others are relatively young, continually changing as Earth's surface evolves.Freshwater lakes are among the planet's most important sources of drinking water and biodiversity. The Great Lakes of North America, Superior, Michigan, Huron, Erie, and Ontario—contain about one-fifth of the world's surface freshwater. Lake Baikal in...

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