What did Wegener hypothesize about mountain ranges?
Wagner speculated that over millions of years these small continents? What did Wegener hypothesize about mountain ranges such as the Andes? He reasoned that if continents had been joined, the fossils would be on the other continent.
What was Wegener’s theory about the continents what made him think this?
Wegener suggested that perhaps the rotation of the Earth caused the continents to shift towards and apart from each other. (It doesn’t.) Today, we know that the continents rest on massive slabs of rock called tectonic plates. The plates are always moving and interacting in a process called plate tectonics.
What evidence supports Wegener’s continental drift hypothesis quizlet?
What evidence supported Wegener’s hypothesis? Wegener gathered evidence from different scientific fields to support his ideas about continental drift. He studied land features, fossils, and evidence of climate change.
How did Alfred Wegener think that mountains formed?
Answer. Alfred Wegener believed that mountains were created because Earth was cooling down and shrunk. This was thought to construct “folds” or mountains in the Earth’s crust if the concept was right. But, mountains would be layout evenly above the Earth’s surface.
How are mountain ranges spread over the Earth?
If this were so, however, they should be spread evenly over the Earth; instead mountain ranges occur in narrow bands, usually at the edge of a continent. Wegener said they formed when the edge of a drifting continent crumpled and folded—as when India hit Asia and formed the Himalayas.
What did Alfred Wegener say about Africa and South America?
He also noted that when you fit Africa and South America together, mountain ranges (and coal deposits) run uninterrupted across both continents, writing: It is just as if we were to refit the torn pieces of a newspaper by matching their edges and then check whether the lines of print ran smoothly across.
How did Alfred Wegener come up with the name Pangaea?
By his third edition (1922), Wegener was citing geological evidence that some 300 million years ago all the continents had been joined in a supercontinent stretching from pole to pole. He called it Pangaea (all lands), and said it began to break up about 200 million years ago, when the continents started moving to their current positions.