UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a fracture in the crust results and the magma pushes up
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as the magma cools, new crust is formed
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high mountain ranges like the Himalayas are formed
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the fractured crust is pushed down, forming a rift valley like in Africa
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Detailed explanation-1: -Divergent Boundaries As the plates separate along the boundary, the block between the faults cracks and drops down into the soft, plastic interior (the asthenosphere). The sinking of the block forms a central valley called a rift.
Detailed explanation-2: -The East African Rift is one of the great tectonic features of Africa, caused by fracturing of the Earth’s crust.
Detailed explanation-3: -Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart.
Detailed explanation-4: -The Great Rift Valley lies on a continental divergent plate boundary. Divergent plate boundaries are where the earth’s rigid lithosphere is being separated due to activity in the flexible asthenoshere and is creating new lithosphere.