Describe the wegner’s continental Drift theory with evidences.
Answers
The theory of continental drift
Wegener thought all the continents were once joined together in an "Urkontinent" before breaking up and drifting to their current positions. But geologists soundly denounced Wegener's theory of continental drift after he published the details in a 1915 book called "The Origin of Continents and Oceans." Part of the opposition was because Wegener didn't have a good model to explain how the continents moved apart.
Though most of Wegener's observations about fossils and rocks were correct, he was outlandishly wrong on a couple of key points. For instance, Wegener thought the continents might have plowed through the ocean crust like icebreakers smashing through ice.
"There's an irony that the key objection to continent drift was that there is no mechanism, and plate tectonics was accepted without a mechanism," to move the continents, said Henry Frankel, an emeritus professor at the University of Missouri-Kansas City and author of the four volume "The Continental Drift Controversy"
Answer:
People used to think that the Earth was only a few thousand years old. They thought that the Earth never changed.
In 1912 a German scientist called Alfred Wegner suggested that millions of years ago all the land was one large continent. Over millions of years the land broke up and drifted apart. This idea is called continental drift.
His evidence for this idea was that:
- shapes of the continents fit together
- the types of rocks on the different continents match up where they fit together
- the fossils on the different continents match up where they fit together.
Wegner could not explain how continental drift happened so not everyone believed his ideas.