What was never proposed as evidence supporting the existence of Pangaea?
Because Wegener could not identify a mechanism capable of moving continents. Which of the following was never proposed as evidence supporting the existence of Pangaea? Islands along the Mid-Atlantic Ridge with rocks dating back from 542 million to 2500 million years ago.
Who argued forcefully for continental drift?
chapter 3 geol
| Question | Answer |
|---|---|
| In the early part of the twentieth century, ________ argued forcefully for continental drift. | Alfred Wegener |
| The former late Paleozoic super continent is known as ________. | Pangaea |
| Today, ________ is in about the same geographic position as during late Paleozoic time. | Antarctica |
What evidence indicated scientists that the continents were once connected?
Wegener's first piece of evidence was that the coastlines of some continents fit together like pieces of a jigsaw puzzle. People noticed the similarities in the coastlines of South America and Africa on the first world maps, and some suggested the continents had been ripped apart (3).
Why did scientists not accept the continental drift hypothesis?
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 evidence exists to support the existence of Pangea quizlet?
Fossils of identical organisms were found on several continents, indicating the continents were once joined. Late Paleozoic sedimentary rocks often contain extensive coal seams that were used to support the existence of Pangaea.
What evidences do scientists use to support the continental drift theory?
In the early part of the 20th century, scientists began to put together evidence that the continents could move around on Earth's surface. 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.
Which of the following did Wegener use to support continental drift?
Wegener used fossil evidence to support his continental drift hypothesis. The fossils of these organisms are found on lands that are now far apart. Grooves and rock deposits left by ancient glaciers are found today on different continents very close to the equator.
Which of the following is not related to plate tectonic theory?
Sea floor spreading Was this answer helpful?
Which was not used in support of the continental drift hypothesis?
Explanation. Wegener did not use paleomagnetism to support his continental drift hypothesis.
What evidence that Pangea existed is seen by looking at a world map?
The coastlines of South America and West Africa seem to match up. Scientists have found that rocks on the east coast of South America are the same as rocks found on the west coast of Africa. These rocks are different from rocks found in other places on Earth, suggesting that the continents were once connected.
What are the 4 evidences of continental drift?
The four pieces of evidence for the continental drift include continents fitting together like a puzzle, scattering ancient fossils, rocks, mountain ranges, and the old climatic zones' locations.
What evidence did Wegener find for Pangaea quizlet?
Wegener showed that certain types of rocks on the continents would match with others in another continent. What did Wegener realize about the oldest rocks on the Afircan and South American continents? That they were connected together when the continents were arranged to form Pangaea.
What evidence supports the idea that all the continents were once joined together quizlet?
What evidence supports the idea that all the continents were once joined together? Similar rocks found on different continents. Mountains created by colliding continents. Evidence of glaciers in unexpected places.
What type of evidence was not used to support the continental drift hypothesis?
Terms in this set (10) Which type of evidence was NOT used by Alfred Wegener to support his continental drift hypothesis? fossil.
Which of these did not provide evidence for continental drift?
Which of these did NOT provide evidence for continental drift? oceanic plate theory.
What was Wegener’s evidence for 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.
Who proposed the theory of plate tectonics?
Alfred Wegener Alfred Wegener in Greenland. Plate tectonics is the theory that Earth's land masses are in constant motion. The realization that Earth's land masses move was first proposed by Alfred Wegener, which he called continental drift.
Which of the following was not evidence that is used to propose the theory of continental drift?
Wegener's continental drift hypothesis did not state that the continents were arranged into a supercontinent many millions of years ago. Wegener's continental drift hypothesis did not give an accurate estimate for the length of time involved in continent motion.
What is the evidence for Pangea?
The rock formations of eastern North America, Western Europe, and northwestern Africa were later found to have a common origin, and they overlapped in time with the presence of Gondwanaland. Together, these discoveries supported the existence of Pangea.
Who proposed the idea of the supercontinent of Pangaea?
geophysicist Alfred Wegener It remained in its fully assembled state for some 100 million years before it began to break up. The concept of Pangea was first developed by German meteorologist and geophysicist Alfred Wegener in 1915. Read more about the formation and fragmentation of Pangea.
What are 3 pieces of evidence for Pangea?
They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
Which of the following was not used in support of the continental drift hypothesis?
Explanation. Wegener did not use paleomagnetism to support his continental drift hypothesis.
What 3 types of evidence support the theory of Pangea?
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.
How do we know Pangea existed?
The rock formations of eastern North America, Western Europe, and northwestern Africa were later found to have a common origin, and they overlapped in time with the presence of Gondwanaland. Together, these discoveries supported the existence of Pangea.
What evidence supported the theory of 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.
What is Harry Hess’s theory?
Hess envisaged that oceans grew from their centres, with molten material (basalt) oozing up from the Earth's mantle along the mid ocean ridges. This created new seafloor which then spread away from the ridge in both directions.
How did Wegener discover Pangea?
Wegener noticed the similarity in the coastlines of eastern South America and western Africa and speculated that those lands had once formed a supercontinent, Pangaea, which had split and slowly moved many miles apart over geologic time.
What evidence did Alfred use?
He used fossil evidence, such as that of tropical plants found on the Arctic island of Spitzbergen. He found large-scale geographic features that matched, like the Appalachian Mountains in the United States and the Scottish Highlands, as well as rock strata in South Africa that matched those in Brazil.
What is J Tuzo Wilson’s theory?
In 1963, Wilson developed a concept crucial to the plate-tectonics theory. He suggested that the Hawaiian and other volcanic island chains may have formed due to the movement of a plate over a stationary "hotspot" in the mantle.
What are the 5 evidences of continental drift?
They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.