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how were the fossil symbols helpful in deciding where to move the continents?

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How Were The Fossil Symbols Helpful In Deciding Where To Move The Continents??

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How were the fossil symbols and mountain belts helpful in deciding where to move the continents? They made it a lot easier to see where to put the pieces. Otherwise, it was really hard to fit them all together.

How are the fossil symbols helpful in deciding where to move the continents?

The fossil symbols and mountain belts were helpful because it showed where the land and water dinosaurs were able to live, especially with the non-swimmers in Africa and South America.

What fossils show up on the most continents What does this suggest about when the continents broke apart?

What does this suggest about when these particular continents broke up? The European Flora occurs on most landmasses. This suggests that the continents were once merged into supercontinents.

Which 2 continents have the most obvious fit of the coastlines What does this observation suggest about past plate motions?

The east coast of South America and the west coast of Africa seem to fit together like pieces of a jigsaw puzzle, and Wegener discovered their rock layers “fit” just as clearly. South America and Africa were not the only continents with similar geology.

What is the idea of the continental drift?

Continental drift is the hypothesis that the Earth’s continents have moved over geologic time relative to each other, thus appearing to have “drifted” across the ocean bed. The speculation that continents might have ‘drifted’ was first put forward by Abraham Ortelius in 1596.

How did continent shape help in deciding where to place the continents?

Some of the continents look as if they fit together like the pieces of a puzzle. … About 100 years ago, a German scientist named Alfred Wegener made the observation that continents fit together. This led him to suggest a new idea that the continents were once part of a single piece of land called Pangea.

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Which fossil occurs on the land masses What does this suggest?

The Glossopteris Plant occurs on the most land masses. This suggests that the climate around these particular continents had been very similar, if not completely the same, and that the Glossopteris had been a common plant back in the days, in addition to it being able to adapt well.

How do fossils provide evidence for plate tectonics?

Modern continents hold clues to their distant past. 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.

How are fossils used by scientists to show that the theory of continental drift is correct?

There are many examples of fossils found on separate continents and nowhere else, suggesting the continents were once joined. If Continental Drift had not occurred, the alternative explanations would be: … They swam to the other continent/s in breeding pairs to establish a second population.

How do fossils tell us where plants and animals once existed?

Fossils give us information about how animals and plants lived in the past. Once people began to recognise that some fossils looked like living animals and plants, they gradually began to understand what they were. They realised they were actually the ancestors of today’s plants and animals.

How did the fossil evidence help you to put the landmasses together?

Alfred Wegener collected diverse pieces of evidence to support his theory, including geological “fit” and fossil evidence. … This indicates that these continents had to be once joined together because the extensive oceans between these land masses act as a type of barrier for fossil transfer.

How is plate tectonics supported by the apparent fit of the continents coastlines?

This apparent fit is due to the fact the continents were once connected, and have since moved apart in what has been called continental drift . However, we now know that it is not just the continents that move, so a more correct term is plate tectonics .

Why are magnetic patterns important evidence for plate tectonics?

How is magnetic striping evidence of plate tectonics? When the Earth’s magnetic field reverses, a new stripe, with the new polarity, begins. Such magnetic patterns led to recognition of the occurrence of sea-floor spreading, and they remain some of the strongest evidence for the theory of plate tectonics.

What is the force that moves the continents?

The theory of plate tectonics suggests that it is convection currents in the mantle of the earth that causes the movement of the continental plates.

What forces drive the drifting of the continents?

Heat and gravity are fundamental to the process

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The energy source for plate tectonics is Earth’s internal heat while the forces moving the plates are the “ridge push” and “slab pull” gravity forces. It was once thought that mantle convection could drive plate motions.

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?

How a fossil can be found on all continents?

The only way these fossils can be found on continents that are separated by oceans is if the continents were once together (connected). These ancient animals and plants could not have swam across oceans! … Fossil records are strong evidence that the continents do drift.

How do rocks provide evidence that continents move?

The theory of plate tectonics argues that Earth’s outer layer—the crust—is composed of large platelike sections of solid rock. These crustal plates essentially float on weaker layers of partially melted rock in the mantle below. Scientists believe that convection circulation within the mantle helps continents to move.

Can you easily fit the shapes of the continents?

Can you fit the pieces together? The easiest link is between the eastern Americas and western Africa and Europe, but the rest can fit together too (Figure 1). Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek.

What do the Glossopteris fossils tell us about the early positions of the continents?

The glossopteris fossils reflects the evidence of separation of continents like southern Africa, Australia, India and Antarctica which was largely separated by huge and wide ocean which was larlier connected with each other.

How old can a fossil be?

10,000 years old
The totality of fossils is known as the fossil record. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old.

When was the Glossopteris fossil found?

The samples were taken back to Britain, and in 1914 at Cambridge University, botanist Albert Seward identified among them, the ancient Glossopteris flora. It was the first time evidence of this extinct plant species had been found in Antarctica.

Why are fossils a good source of evidence for evolution?

Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today.

Why are similar fossils found on different continents?

They move at a very slow rate – usually measured in millions of years – and continents are either torn apart or collide together to form very large single continents. Fossils of the same genus/species suggest that contents that were once together, must have been together in the geological past.

Do movements of continents play an important factor in the so called climate change?

Less greenhouse gas means that less heat is trapped in Earth’s atmosphere. But changes in Earth’s atmosphere cannot explain the full extent of global cooling or periods of acute change. … In other words, so-called tectonic forces—the drifting and collisions of Earth’s tectonic plates—may lead to climate changes.

In what ways do fossils help support the hypothesis of 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.

Is the presence of animal fossils tells that South America Africa and Antarctica where once connected?

Yes, because these fossils indicated the former connections of the continents before which was called Gondwana in the Triassic period, 200 million years ago.

Which indicates how evidence of climate change supports the Theory of continental drift?

The ‘same animal fossils’ found on different continents provide evidence climatic change on continent supporting the theory of ‘continental drift’. Explanation: The continental drift is actually a theory that has been made how the continents are shifted their position on the surface of the earth.

How are fossils useful to us in learning about our ancestors?

Fossils helps us to learn about the ancestors of million years ago. Fossils are the actually the remaining of the actual body parts like bones or skeleton or footprints and traces of the body etc. … Softer tissue can be eaten by the animals or can be damaged due to the decay so the harder shell can be changed to fossils.

Why is understanding the environment of fossilized organisms important to scientific research?

Documenting Changes. Environmental interpretation, or understanding how the Earth has changed over time, is another area where fossils supply invaluable evidence. The type of fossil found in a particular location tells us what kind of environment existed when the fossil was formed.

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What fossils provide evidence that over time animals moved from living in the water to living on dry land?

Transitional fossils are fossils that provide evidence organisms may have transitioned from water to land. An example of this is the Tiktaalik fossil. It has fins and gills like a fish, but it also has leg bones and lungs like a land mammal.

Which landmasses show evidence of ancient glaciers?

Evidence of ancient glaciers that existed around 250 million years ago can be found on the landmasses of South America, Antarctica, Africa, India and Australia. 4. Based on the evidence of glacier, it is likely that the landmass of (South) Africa was located over the south pole at the time of Pangaea.

Which fossil occurs on the most landmasses What does this suggest about when the particular continents broke up?

The Glossopteris fossils occurs on the most landmasses. This suggests that these particular continents broke up after the Glossopteris went extinct.

What does the theory of plate tectonics help explain?

The theory of plate tectonics explains most of the features of Earth’s surface. It explains why earthquakes, volcanoes and mountain ranges are where they are. It explains where to find some mineral resources. … some places are prone to earthquakes while others are not.

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