Why was the continental drift theory rejected?
The main reason that Wegener’s hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth’s spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true.
What was one Rejection of Continental Drift?
Although now accepted, the theory of continental drift was rejected for many years, with evidence in its favor considered insufficient. One problem was that a plausible driving force was missing. A second problem was that Wegener’s estimate of the speed of continental motion, 250 cm/year, was implausibly high.
Why did scientists not accept the continental drift hypothesis quizlet?
Why did scientists not accept the Continental Drift hypothesis? It was based on observations from the southern hemisphere which was unfamiliar to most geologists.
Why was the theory of plate tectonics initially rejected?
Geologists roundly denounced Wegener’s continental drift theory 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, something scientists later explained under the umbrella of …
What was Alfred Wegener’s theory?
In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other. He called this movement continental drift.
What is Wegener’s theory of continental drift?
Wegener’s continental drift theory introduced the idea of moving continents to geoscience. He proposed that Earth must have once been a single supercontinent before breaking up to form several different continents.
Why do scientists think that lithosphere has to be destroyed somewhere on or in the earth?
Why do scientists think that lithosphere has to be destroyed somewhere on or in the earth? Lithosphere is created at divergent boundaries and the earth is not getting any larger.
What did Harry Hess discover that would eventually prove Wegener’s theory correct?
Alfred Wegener produced evidence in 1912 that the continents are in motion, but because he could not explain what forces could move them, geologists rejected his ideas. Almost 50 years later Harry Hess confirmed Wegener’s ideas by using the evidence of seafloor spreading to explain what moved continents.
Why did people not believe plate tectonics?
Another reason why Wegener’s idea was not initially accepted was because of the way he proposed that continents used to fit together. This was because of the assumption most people had was that the continents split along the lines of coast lines and not the 200 m isobath proposed by Wegener.
What 3 pieces of evidence did Alfred Wegener cite to propose his theory?
Alfred Wegener, in the first three decades of this century, and DuToit in the 1920s and 1930s gathered evidence that the continents had moved. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
Why did Alfred Wegener think the continents moved?
Wegener thought that the continents were moving through the earth’s crust, like icebreakers plowing through ice sheets, and that centrifugal and tidal forces were responsible for moving the continents.
Why did the scientific community reject the continental drift theory?
The scientific community was invested in the geosyncline theory so rejected the Continental drift theory. The theory of continental drift contradicted the prevailing theory of uniformtariaism.
How does continental drift contradict the prevailing theory of uniformtariaism?
The theory of continental drift contradicted the prevailing theory of uniformtariaism. The idea of slow uniform geological processes was and is firmly entrenched in the scientific community. As first proposed the Continental Drift theory proposed rapid and recent massive movement of the Continents.
How did continental drift end up in horizontal strata?
There is no mechanism for how the deep ocean layers end up in horizontal strata on the continents. The problem that was used to reject Continental Drift is that the theory had no mechanism or explanation for what could cause the movement of the massive continents.
What is the difference between plate tectonics and continental drift?
As first proposed the Continental Drift theory proposed rapid and recent massive movement of the Continents. The theory of Continental Drift was modified and renamed as Plate tectonics to remove the idea of rapid and recent movements, in order to be accepted.