How do we know The Age of The Earth?
2:53
YouTubeMr Scientific
How do we know The Age of The Earth?
Our planet is ~4.5 billion years old. But, How do we know it? First, let's understand how we measure the age of rocks. To do so, scientists use Radiometric Dating methods. In this method, scientists take a part of the rock and measure how much radioactive material has decayed. Then scientists compare it with known decay rate and calculate when ...
26.1K viewsMay 21, 2021
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Le Carbonifère ressemblait à une autre planète. Il y a plus de 300 millions d’années, la Terre était recouverte d’immenses forêts marécageuses étouffantes, avec un taux d’oxygène bien plus élevé qu’aujourd’hui. C’est ce qui a permis à certaines créatures de devenir gigantesques. Des libellules de près de 70 cm volaient au-dessus des marais. Des mille-pattes géants de plus de 2 mètres rampaient entre les fougères. D’immenses scorpions se cachaient dans l’ombre pendant que les premiers reptiles co
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Le Carbonifère ressemblait à une autre planète. Il y a plus de 300 millions d’années, la Terre était recouverte d’immenses forêts marécageuses étouffantes, avec un taux d’oxygène bien plus élevé qu’aujourd’hui. C’est ce qui a permis à certaines créatures de devenir gigantesques. Des libellules de près de 70 cm volaient au-dessus des marais. Des mille-pattes géants de plus de 2 mètres rampaient entre les fougères. D’immenses scorpions se cachaient dans l’ombre pendant que les premiers reptiles co
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