Rivers Quiz

How this quiz works

1. 1. Start a run — 10 Rivers 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.

Rivers

Rivers are natural flowing bodies of freshwater that move from higher elevations to lower areas under the force of gravity. Most rivers begin at a source, such as a mountain spring, glacier, lake, or rainfall-fed watershed, and flow through valleys and plains before emptying into another river, a lake, a sea, or an ocean at their mouth. Throughout their journey, rivers shape the landscape through erosion, transportation, and deposition of sediments.Every river is part of a drainage basin or watershed, which is the land area where precipitation collects and drains into a common river system. Smaller streams called tributaries join larger rivers, increasing their volume and creating extensive...

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