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Plate Tectonics Evidence Flashcards | StudBud
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Plate Tectonics Evidence
Plate Tectonics Evidence
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1
Why is the magnetic striping of the seafloor considered evidence for seafloor spreading.
It shows that the seafloor has not moved.
It shows that the Earth's magnetic field has reversed.
It shows the seafloor is being created.
Magnetic striping is not evidence for seafloor spreading.
2
What did the idea of seafloor spreading provide for Wegener's continental drift theory?
It didn't have anything to do with Wegener's theory
Seafloor spreading proved Wegener's claims false.
It's all the same, only the names have changed.
It provided a mechanism for how the continents moved.
3
How do glacial erosion patterns support Wegener's hypothesis?
They show that ancient climates were sometimes cold
They show the climate has changed due to drifting continents
They show that cold areas of earth could be useful
They show that glaciers form in the same way as today
4
How did Wegener explain tropical fossils that were found in cold regions.
Seafloor spreading made the Earth warmer.
The land where they were found was once near to the equator.
The earth was once closer to the sun.
Volcanoes caused increased global warming.
5
Which of the following is the best fossil evidence for continental drift?
Fossils of dinosaurs were found glaciers.
Fossils of the same plants were found on separate continents
Fossils of the same plants were found on the same continent
Fossils of ocean organisms were found in the ocean.
6
What technological advances led to the development of the seafloor spreading hypothesis.
Sonars and magnetometers.
Magnetometers and radar.
Satellites and radar.
Sonar and satellites.
7
What did the other scientists say about Alfred Wegener?
He was a genius for discovering light.
He was a genius for discovering air.
Ha Ha Alfred Wegener, you are a crazy little man.
He was a genius for discovering fire.
8
How do fossils help explain Wegener's continental drift ideas?
Fossils explain seafloor spreading, not continental drift.
Fossils of the same species were found on separate continent
Fossils do not support Wegener's ideas.
Fossil evidence proves the continents don't move.
9
What evidence did Wegener have to support his idea of continental drift?
Fit of the continents, coral reefs, fossils, climate
Fossils, trenches, mid-ocean ridges, climate.
Climate, mountain ranges, mid-ocean ridges, fossils.
Mountain ranges, fossils, climate, fit of the continents.
10
Why was Alfred Wegener's theory initially rejected by scientists?
Wegener was German.
Wegener could not explain how seafloor spreading worked.
Wegener could not explain how the continents moved.
Wegener was not a geologist.
11
How was Alfred Wegener's hypothesis accepted by other scientists.
Very few agreed, scientists did not agree with his mechanism
Very well, scientists agreed with the fit of the continents.
Fairly well, some questioned the fossil data.
Poorly, most scientists did not accept seafloor spreading.
12
If the seafloor is spreading at mid-ocean ridges, why is the Earth not getting bigger?
Seafloor is recycled at the trenches.
Seafloor is less dense.
The seafloor isn't really spreading.
The earth really is getting bigger.
13
Which statement best describes the main idea of Alfred Wegener's Theory of Continental Drift?
Continents float on a layer of liquid.
At mid-ocean ridges, new seafloor is created.
Continents were once a single landmass that drifted apart.
Continents have never moved.
14
What is the most significant discovery that led to the development of modern plate tectonics.
Discovery of earthquakes and volcanoes.
Discovery of fossils.
Discovery of mid-ocean ridges.
Discovery of the fit of the continents.
15
How did Wegener explain the distribution of Mesosaurus fossils?
Mesosaurus could swim across the Atlantic Ocean.
South American and Africa were once attached.
Mesosaurus are found on every continent.
All animals descend from Mesosaurus