Geography
Amazon Basin Regional Quiz
The lungs of the Earth — how much do you know about the world's greatest rainforest?
The lungs of the Earth — how much do you know about the world's greatest rainforest?
The Amazon River discharges approximately 209,000 cubic meters per second — more than the next seven largest rivers combined and roughly 20% of all river-to-ocean freshwater flow on Earth. The basin spans about 7 million square kilometers across nine countries and is estimated to contain roughly 10% of the planet's known species, making it the single most biodiverse region on Earth.
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 navigate the Amazon's 1,100+ tributaries — from the Rio Negro's blackwater to the Madeira, Tapajos, and Xingu — and the famous Meeting of the Waters near Manaus. Expect questions on jaguars, pink river dolphins, anacondas, harpy eagles, and the Yanomami and Kayapo peoples, plus the Manaus rubber boom, modern deforestation, and why the Amazon generates about half its own rainfall.
The Amazon Basin covers parts of nine countries: Brazil (about 60%), Peru (13%), Bolivia, Colombia, Ecuador, French Guiana, Guyana, Suriname, and Venezuela.
The Amazon contains roughly 10% of all known species on Earth, including about 2.5 million insect species, 40,000 plant species, 2,200 fish species, and more than 1,294 bird species.
Approximately 17% of the original Amazon rainforest has been lost to deforestation, with Brazil historically accounting for most of the clearing — averaging around 10,000 square kilometers per year at peak rates.
Last updated: April 2026