What are the evidences of seafloor spreading theory?
Several types of evidence from the oceans supported Hess's theory of sea-floor spreading-evidence from molten material, magnetic stripes, and drilling samples. This evidence also led sci- entists to look again at Wegener's theory of continental drift.
What evidence supported the theory of seafloor spreading quizlet?
Several types of evidence supported Hess's theory of sea-floor spreading: eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves.
Which of the following is the best evidence of seafloor spreading?
The correct answer is A. The pieces of evidence gathered for sea-floor spreading include the evidence from molten material, from matching patterns of magnetic stripes, and from drilling samples.
Which of the following is the single best evidence in support of the concept of seafloor spreading?
Evidence of Magnetic stripes It was the greatest support of sea fall spreading.
How does evidence from sea floor studies support the theory of plate tectonics?
Wegener proposed that the continents themselves move, which is untrue. It is the tectonic plates that move. Sea floor spreading caused the break up of Pangea, which prompted Wegener to add this in support of his continental drift theory.
How does seafloor spreading support the theory of plate tectonics?
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.
How does seafloor spreading provide evidence of past plate motion?
At first the driving force for spreading was argued to be convection currents in the mantle. Since then, it has been shown that the motion of the continents is linked to seafloor spreading by the theory of plate tectonics, which is driven by convection that includes the crust itself as well.
What is the evidence for plate tectonic theory?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
What are two pieces of evidence for 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.
What evidence supports plate tectonics quizlet?
What are the five main pieces of evidence for the Theory of Plate Tectonics? Magnetic striping, Age of the ocean's crust rocks, Coral islands, The position of ocean trenches and the locations of earthquakes and volcanoes.
What type of evidence for the plate tectonic theory is provided when scientist discovered that the magnetic field reverses polarity?
This further provided evidence for plate tectonics. More evidence came when scientist examined the sea floor and saw that there were reversals of polarity of Earth's magnetic field that was in a striped pattern. The strips of polarity reversal were mirror images on each side of the mid- ocean ridge.
What are the 5 evidence that supports the theory of plate tectonics?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
What evidence best supports the plate tectonics theory?
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.
What are three pieces of evidence that support 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.
How does evidence from seafloor studies support the theory of plate tectonics?
Wegener proposed that the continents themselves move, which is untrue. It is the tectonic plates that move. Sea floor spreading caused the break up of Pangea, which prompted Wegener to add this in support of his continental drift theory.
What are the evidences to support the theory of plate tectonics?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
What are the four lines of evidence that support plate movements?
Alfred Wegener, in the first three decades of this century, and DuToit in the 1920s and 1930s gathered evidence that the continents had moved. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
What are the 5 evidence that supports the Theory of plate tectonics?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
What are the 5 evidences of plate movements?
Evidence for Plate Tectonics
- Shape of continents. From almost the creation of the first true maps of the Earth, people started seeing how continents would be able to fit together. …
- Location of mountains and fossils. …
- Earthquakes and Volcanoes. …
- Hot Spot Volcanoes.
Dec 22, 2016
What are the 3 evidence of plate movements?
Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together.