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What theory did Alfred wegener proposed first?
Alfred wegeners theory of continental driftIs that once all the continents were all join as one massive land mass. (and split apart.)
When did alfred wegener discover pangaea?
Alfred Wegener proposed the theory of Pangaea, the supercontinent, in 1912 based on his ideas of continental drift. However, his theory was not widely accepted until after his death in 1930 when further evidence supported the idea of plate tectonics.
What are the three things Alfred Wegener used to prove his theory about pangaea?
Alfred Wegener used evidence from fossil records, similarities in rock formations across continents, and matching geological features as evidence to support his theory of Pangaea. These observations led him to propose the idea of continental drift, suggesting that the continents were once joined together as a single landmass.
What was alfred wegeners hypothesis about continental drift?
States that the continents were once a single huge landmass. This landmass broke up million years ago and the pieces drifted apart. facing edges of many continents have similar rock formations. If the continents brought togehter, the formations would match exactly (like combining South America and Africa). Fossils of the same kinds of living things have been found on different continents. Perhaps these living things were together on one landmass before it split.
If you were able to travel back through time and meet with Alfred wegener hou could you explain to his detractors that the theory of continental drift was correct?
If I was able to travel back in time, I wouldn't be talking to Wegener's detractors, but if I did, I would say something like this: "I'm from the future. I know this sounds silly, but we've mapped the bottom of the ocean and discovered these things called mid-ocean ridges which are present in every major ocean. The rocks on either side of the ridge get older the further away from the ridge you go. Scientific instruments actually can measure this movement of the plates, and it's somewhere in the neighborhood of the rate of fingernail growth. We've also been to the moon and back and sent robots to Mars. Furthermore we've....HEY, LEAVE ME ALONE. PUT ME DOWN!...."
What theory did Alfred wegener proposed first?
Alfred wegeners theory of continental driftIs that once all the continents were all join as one massive land mass. (and split apart.)
When did alfred wegener discover pangaea?
Alfred Wegener proposed the theory of Pangaea, the supercontinent, in 1912 based on his ideas of continental drift. However, his theory was not widely accepted until after his death in 1930 when further evidence supported the idea of plate tectonics.
What are two things that support the continental drift theory?
Two things that supports the continental drift theory are; 1. Fossil. 2. Continent Shapes.
What is theory for fossils of tropical plants found on an island in the arctic ocean?
The theory for fossils of tropical plants found on an island in the Arctic Ocean is that the island was once situated in a tropical or subtropical region, and through the movement of tectonic plates, it shifted to its current location in the Arctic. This suggests that the climate of the island has significantly changed over time due to the shifting of the Earth's landmasses.
What are the three things Alfred Wegener used to prove his theory about pangaea?
Alfred Wegener used evidence from fossil records, similarities in rock formations across continents, and matching geological features as evidence to support his theory of Pangaea. These observations led him to propose the idea of continental drift, suggesting that the continents were once joined together as a single landmass.
What was NOT used by Wegener to support his hypothesis of continental drift?
The ratio of the price of tea in China to the average density of the Moon. Among other things. You might want to be more specific in questions like this.
What were the three things that Alfred wegener used to prove the theory of continental drift?
Alfred Wegner had 4 theory`s,Climate evidence,Fossil evidence,the continents fitting together like a puzzle,and horizontal movement. The fossils were different types of ancient ferns and Dinosaurs.
What was alfred wegeners hypothesis about continental drift?
States that the continents were once a single huge landmass. This landmass broke up million years ago and the pieces drifted apart. facing edges of many continents have similar rock formations. If the continents brought togehter, the formations would match exactly (like combining South America and Africa). Fossils of the same kinds of living things have been found on different continents. Perhaps these living things were together on one landmass before it split.
What theory supports the continental drift theory?
The idea that the continents were once one super-continent and subsequently moved apart is the basis of the theory of continental drift. Continental drift was first proposed as a scientific hypothesis with evidences by Alfred Wegener early in the twentieth century. Unfortunately, the evidence he was able to cite, such as similarities in coastline geographies and fossils on either side of the Atlantic, did not provide an explanation for the mechanism which caused it to happen. In Wegener's theory, the continents were somehow able to plow through the oceans. It wasn't until the mid-twentieth century that the Atlantic Ridge system was discovered. Further investigation revealed that the magnetic orientation of rock on either side of the ridge matched the orientation on the other side of the ridge, providing the proof for the mechanism that caused the continents to move apart. Basaltic magma was infilling the area on either side of the ridge to create new continental crust. Subduction of older, denser oceanic crust takes place at collision zones where it meets less dense oceanic and continental crust. The whole process is driven by gravity and heat from the Earth's interior via convection currents in the mantle. The process is no longer called continental drift, but is referred to as plate tectonics.Alfred Wagner's theory was that the sea floor was spreading, causing the continents to 'drift'. The theory was originally tossed aside because the fact that the continents fitted together was not sufficient.
Was Wegener's continental drift hypothesis weakened because of viable mechanism for moving the continents was lacking?
Definitely. Wegener seems to have believed that the continents plowed through the oceanic crust like a ship plowing through water. The geologists of the day couldn't see how that could happen, mainly because it can't. Eventually, though, they came to realize that what's really happening is that the oceanic crust is moving on its own and carrying the continents with it. That's a lot more rational, but figuring that out required knowing that there are mid-ocean ridges, with lots of volcanic activity; that the oceanic crust is newest at those ridges and older as you get farther away; knowledge of where earthquakes occur worldwide; and many, many other things that we only first encountered in the era around World War II, long after Wegener was dead, and only started to get a real handle on decades after even that.
Is there such things as continental drift?
Yes
What two things did Charles Darwin observe or study that helped him develop his theory of natural selection?
I don't know mfer's need effin help round here!
