Geography
Rivers & Lakes Quiz
The Nile, the Amazon, the Great Lakes — test your knowledge of Earth's waterways.
The Nile, the Amazon, the Great Lakes — test your knowledge of Earth's waterways.
Earth's rivers carry approximately 36,000 cubic kilometers of water to the oceans each year, while its lakes hold about 90% of the world's surface freshwater. From the 6,650-kilometer Nile to the 1,642-meter-deep Lake Baikal, our planet's waterways are truly extraordinary.
Each round presents 10 randomized questions from a pool of 50, with four multiple-choice options and instant feedback after every answer. Your final score comes with a performance tier and shareable results.
You'll discover the longest rivers on every continent, the largest lakes by volume and area, famous waterfalls like Niagara, Victoria, and Angel Falls, massive river deltas, and the historical significance of waterways that shaped civilizations.
The Nile at approximately 6,650 km is traditionally considered the longest, though some measurements suggest the Amazon (6,400 km) may be longer depending on the source.
Lake Baikal in Siberia, Russia, reaching 1,642 meters deep and containing about 20% of the world's unfrozen surface freshwater.
Lake Superior is the largest by surface area at 82,100 km², making it the largest freshwater lake by area in the world.
Last updated: March 2026