- Why did Wegener’s theory take more than 50 years?
- What supports Wegener’s theory of plate tectonics?
- What evidence did Wegener use in his theory?
- Why did most geologists disagree with Wegener’s ideas?
- When was Wegener’s theory accepted?
- What is the best evidence of plate tectonics?
- What were formed when Pangaea broke apart?
- What would happen if Pangaea wouldn’t have been broken?
- What is the force that moves the continents?
- What was Wegener’s hypothesis?
- What are 3 pieces of evidence for Pangea?
- What are the 4 pieces of evidence for continental drift?
- Is Wegener’s theory about the earth credible and believable?
- Why was Wegener’s hypothesis not accepted?
- Why was Pangea not accepted?
Why did Wegener’s theory take more than 50 years?
It took more than 50 years for Wegener’s theory to be accepted.
One of the reasons was that it was difficult to work out how whole continents could move.
It was not until the 1960s that enough evidence was discovered to support the theory fully.
This slideshow explains Wegener’s theory..
What supports Wegener’s theory of plate tectonics?
Plate tectonic theory had its beginnings in 1915 when Alfred Wegener proposed his theory of “continental drift.” Wegener proposed that the continents plowed through crust of ocean basins, which would explain why the outlines of many coastlines (like South America and Africa) look like they fit together like a puzzle.
What evidence did Wegener use in his theory?
He presented his Continental Drift hypothesis on 6 January 1912. He analyzed both sides of the Atlantic Ocean for rock type, geological structures and fossils. He noticed that there was a significant similarity between matching sides of the continents, especially in fossil plants.
Why did most geologists disagree with Wegener’s ideas?
Because Wegener could not identify the cause of continental drift, most geologists rejected his idea. … Wegener developed a hypothesis that better explained where mountains occur and how they form. Wegener proposed that when continents collide, their edges crumple and fold. The folding continents push up huge mountains.
When was Wegener’s theory accepted?
Wegener first presented his theory in lectures in 1912 and published it in full in 1915 in his most important work, Die Entstehung der Kontinente und Ozeane (The Origin of Continents and Oceans).
What is the best evidence of plate tectonics?
Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed. Some life “rode” on diverging plates, became isolated, and evolved into new species.
What were formed when Pangaea broke apart?
About 200 million years ago Pangaea broke into two new continents Laurasia and Gondwanaland. Laurasia was made of the present day continents of North America (Greenland), Europe, and Asia. Gondwanaland was made of the present day continents of Antarctica, Australia, South America.
What would happen if Pangaea wouldn’t have been broken?
The rain which comes from the ocean wouldn’t be able to travel far enough inland — leaving parts of Pangea practically uninhabitable by humans and other species. And weather up north would be different too, with Russia being much warmer than it is today. … On Pangea, we might have less diversity of species.
What is the force that moves the continents?
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. The continents are still moving today. Some of the most dynamic sites of tectonic activity are seafloor spreading zones and giant rift valleys.
What was Wegener’s hypothesis?
Alfred Wegener first presented his hypothesis to the German Geological Society on 6 January 1912. His hypothesis was that the continents had once formed a single landmass, called Pangaea, before breaking apart and drifting to their present locations.
What are 3 pieces of evidence for Pangea?
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.
What are the 4 pieces of evidence for continental drift?
The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones.
Is Wegener’s theory about the earth credible and believable?
Yes it was credible but it was not believable not until early 1960’s wherein the seafloor spreading was discovered which explains why the continents are moving in a certain direction. Alfred Wegener wasn’t able to provide evidence on how exactly the plates are moving or what causes the plates to move.
Why was Wegener’s hypothesis not accepted?
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.
Why was Pangea not accepted?
Despite having this geological and paleontological evidence, Wegener’s theory of continental drift was not accepted by the scientific community, because his explanation of the driving forces behind continental movement (which he said stemmed from the pulling force that created Earth’s equatorial bulge or the …