EARTH SCIENCE
TECTONICS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It didn’t support Wegener’s hypothesis.
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It provided the mechanism by which the continents move.
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It provided more evidence of clomate change.
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It provided more evidence for animal migration.
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Detailed explanation-1: -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.
Detailed explanation-2: -In the principle of plate tectonics, seafloor spreading helps explain continental drift. Tensional tension allows cracks to occur in the lithosphere as oceanic plates diverge. Wegener suggested that, it is untrue, the continents themselves shift. The tectonic plates are the ones that shift.
Detailed explanation-3: -The Mechanism for Continental Drift Seafloor spreading is the mechanism that Wegener was looking for! Convection currents within the mantle drive the continents. The continents are pushed by oceanic crust, like they are on a conveyor belt. Over millions of years the continents move around the planet’s surface.
Detailed explanation-4: -By the 1960s, scientists had amassed enough evidence to support the missing mechanism-namely, seafloor spreading-for Wegener’s hypothesis of continental drift to be accepted as the theory of plate tectonics.
Detailed explanation-5: -Continental drifts are caused by the spreading of the seafloor. When tectonic plates, also known as massive slabs of rocks, move, this causes the landmasses, or continents, to drift and move apart from one another.