Alfred Wegener Is Best Known For What Hypothesis?

Alfred Wegener Is Best Known For What Hypothesis??

the continental drift hypothesis

What was Alfred Wegener hypothesis called?

Continental drift

Continental drift was a theory that explained how continents shift position on Earth’s surface. Set forth in 1912 by Alfred Wegener a geophysicist and meteorologist continental drift also explained why look-alike animal and plant fossils and similar rock formations are found on different continents.

Who is Alfred Wegener and what was he known for?

Wegener was a German meteorologist geophysicist and polar researcher. In 1915 he published ‘The Origin of Continents and Oceans’ which outlined his theory of Continental Drift. Wegener was a member of four expeditions to Greenland.

What hypothesis is Alfred Wegener known for and what evidence supported his hypothesis?

Wegener’s Continental Drift Hypothesis

Alfred Wegener suggested that continental drift occurred as continents cut through the ocean floor in the same way as this icebreaker plows through sea ice. Wegener put his idea and his evidence together in his book The Origin of Continents and Oceans first published in 1915.

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When did Alfred Wegener propose his theory?

1912

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).

How did Alfred Wegener prove his theory?

Wegener supported his theory by demonstrating the biological and geological similarities between continents. South America and Africa contain fossils of animals found only on those two continents with corresponding geographic ranges.

How did Alfred Wegener contribute to the 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 is the importance of Alfred Wegener’s continental drift hypothesis to the modern study of Earth’s geology?

The realization that Earth’s land masses move was first proposed by Alfred Wegener which he called continental drift. … That theory was initially ridiculed but it paved the way for another theory called plate tectonics that scientists have now accepted to explain how Earth’s continents move.

What was the response to Wegener’s hypothesis?

The main problem with Wegener’s hypothesis of Continental Drift was the lack of a mechanism. He did not have an explanation for how the continents moved. His attempt to explain it using tides only made things worse. But both Galileo and Darwin had serious flaws in their theories when they were first presented.

Where did Alfred Wegener present his theory?

In November 1926 Wegener presented his continental drift theory at a symposium of the American Association of Petroleum Geologists in New York City again earning rejection from everyone but the chairman. Three years later the fourth and final expanded edition of “The Origin of Continents and Oceans” appeared.

What is a quote from Alfred Wegener?

Scientists still do not appear to understand sufficiently that all earth sciences must contribute evidence toward unveiling the state of our planet in earlier times and that the truth of the matter can only be reached by combing all this evidence.

Which of these pieces of evidence did Alfred Wegener cite to support his hypothesis of continental drift?

List four pieces of evidence for Wegener’s hypothesis of continental drift? Continents fit like a puzzle climate clues fossil clues and rock layers or formations. What was the name of the reptile that Wegners found in both South America and Africa?

What do you understand by the theory of continental drift discuss the prominent evidences in its support?

According to the theory all the continents formed a single continental mass- Pangea and mega ocean- Panthalassa surrounded it. Around 200 million years ago Pangaea started splitting and broke down into two large continental masses as Laurasia and Gondwanaland forming the northern and southern components respectively.

What observation supported Alfred Wegener’s continental drift theory?

Terms in this set (20) Which observation supported Wegener’s theory of continental drift? Identical fossils were found on continents that were far apart. Which feature do you usually see when tectonic plates move apart?

What best describes the plate tectonics theory?

The theory of plate tectonics states that the Earth’s solid outer crust the lithosphere is separated into plates that move over the asthenosphere the molten upper portion of the mantle. Oceanic and continental plates come together spread apart and interact at boundaries all over the planet.

What is the theory of continental drift?

Continental drift describes one of the earliest ways geologists thought continents moved over time. … 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.

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What evidence supports Wegener’s hypothesis?

Fossils also provided evidence to support Wegener’s theory. A fossil is any trace of an ancient organism preserved in rock. The fossils of the reptiles Mesosaurus and Lystrosaurus and a fernlike plant called Glossopteris have been found on widely separated landmasses.

What evidence supported Wegener’s hypothesis of continental drift quizlet?

The Theory of Continental Drift was proposed by Alfred Wegener in 1912. He used several pieces of evidence to support his theory including fossils rocks glacial markings coal deposits and the fact that the continents fit together like a jigsaw puzzle. .

What is continental drift theory Slideshare?

His idea was called the continental drift theory. Alfred Wegener • Alfred Wegener said that all of the continents were once together as one land mass which he named Pangaea which means “all land”. • This land mass broke apart into separate continents about 20 million years ago.

What is the theory of continental drift answers?

The theory of continental drift suggests that the continents drift across the ocean and are not stationary on earth’s surface. Alfred Wegner proposed that all of the continents on Earth were once fitted together into a single super continent that he named “Urkontinent”.

What do you understand by continental drift theory give any four evidences in support of this theory?

The direction of drift According to Wegener the continents drifted in two directions: Towards the equator towards the west. … Evidence in support of the Continental Drift Theory – “Jigsaw” fit Geological structure Permo-carboniferous glaciations Similar Fossil Paleoclimatic evidence etc.

How did Wegener use climate clues to support his hypothesis?

Wegener used climate clues to support his hypothesis of continental drift by finding fossils of warm weather plants in the Arctic Ocean glacier features were found in Africa. … rock clues are used to support the hypothesis of continental drift because similar rock structures are found on different continents.

What two observations supported Wegener’s idea?

Wegener tentatively suggested two candidates: centrifugal force caused by the rotation of the Earth and tidal-type waves in the Earth itself generated by the gravitational pull of the sun and moon.

Which of the following observations supported the continental drift theory?

Continental drift is supported only by observations of similar coastlines and geologic features on opposite sides of an ocean plate tectonics is supported by a wide range of fossil evidence as well.

Which of the following observations about landforms best supports the theory of plate tectonics?

Which of the following observations about landforms best supports the theory of plate tectonics? Impact craters have been found both on dry land and on the ocean floor. As lava cools on Earth’s surface it forms a variety of igneous rocks. Volcanoes are distributed randomly on every continent.

What types of evidence best supports the theory 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.

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Which premise best supports the theory of plate tectonics?

Which premise best supports or explains the theory of plate tectonics? Large convection cells circulate molten rock in different directions in the earth’s mantle. Near the crust the movement of the cells drags tectonic plates along.

What observations led to the proposal of continental drift?

What observations led to the proposal of continental drift? The matching coastlines of continents of opposite sides of the Atlantic Ocean suggest that the continents were once joined. Why was the theory of continental drift not accepted early on?

Who was Alfred Wegener and what was his hypothesis quizlet?

Wegeners hypothesis was that all the continents were once joined together in a single landmass and have since drifted apart. Wegener gathered evidence from different scientific fields to support his ideas about continental drift. He studied land features fossils and evidence of climate change.

Who was Alfred Wegener and what was his theory quizlet?

Terms in this set (12)

Who was Alfred Wegener? A German meteorologist polar researcher and geophysicist that proposed the theory of continental drift.

Why was Wegener’s idea of continental drift 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.

Is continental drift the same as plate tectonics?

The main difference between plate tectonics and continental drift is that plate tectonics describes the features and movement of Earth’s surface in the present and in the past whereas continental drift describes the drifting of Earth’s continents on the ocean bed.

What is plate tectonics Slideshare?

– The Earth’s crust is divided into segments called plates. … The theory of plate tectonics states that “the Earth’s outermost layer is fragmented into a dozen of large & small plates that are moving relative to one another on top of the mobile Asthenosphere”.

Which statement best supports the theory of continental drift?

Unit test
Question Answer
Which statement best describes the theory of continental drift in terms of evidence that the continents move and the mechanism driving their movement The theory was supported by the evidence and included a mechanism

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