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The Negro and Solimões rivers meet right next to Manaus (AM). And you can clearly see where these two rivers meet, because their waters don’t mix and have different colors. Of course, we had to go and see this phenomenon up close! The Solimões river is the largest and comes from the Andes, so it comes out of the mountains very quickly and ends up tearing up earth along the way, resulting in muddy and opaque water. The Negro river comes from a flatter region that floods, so it receives many more leaves, branches and tree trunks. All this material dissolves, forming a kind of “black tea”! All this also changes the acidity of the water. The Solimões has a pH of 7.0, while the Negro river has a pH of 5.5, which even influences the animals that live in each one! What do you think? ► How a ship works • How a Greenpeace SHIP WORKS ... ► Chemical chameleon • Chemical chameleon (CHEMISTRY EXPERIENCE ... ► Experiments with water • 4 incredible experiments to do wit... ► Sundial • AMAZING!!! Sundial that designed ... ► Subscribe: https://youtube.com/user/iberethenori... Business: [email protected] Press and invitations: [email protected] Questions and suggestions: [email protected] Teachers, schools and universities: [email protected] Website: http://manualdomundo.com.br Facebook: / manualdomundo Instagram: / manualdomundo Instagram Mari: / amarifulfaro Twitter Mari: / marifulfaro Instagram Iberê: / oibere Twitter Iberê: / iberethenorio CREDITS Direction and presentation: Iberê Thenório Executive production and presentation: Mari Fulfaro Images: Natã Romualdo Production: Rubens Ishara Editing and finalization of images: Kiwi Produções ????This is the Manual do Mundo channel. New videos every Tuesday, Thursday and Saturday, at 11:30 am. ???? Manual do Mundo Comunicação LTDA Post Office Box 77811 Zip Code 05503-970 SP - SP ????Manual do Mundo Comunicação LTDA Post Office Box 77811 Zip Code 05503-970 SP - SP Copyright© 2023 Manual do Mundo®. All rights reserved.