The asthenosphere plays an important role in plate movements because:
It is partially molten and allows plates to move
The asthenosphere is the semi-plastic, partially molten layer of the upper mantle lying beneath the rigid lithosphere.
Because it behaves in a ductile, partly molten manner, it allows the rigid tectonic plates of the lithosphere to move slowly over it, driven by convection currents within the mantle, causing plate tectonic movements.
It is neither composed of water bodies nor perfectly solid and rigid, and the Earth's magnetic field originates from the motion of molten iron in the outer core, not the asthenosphere.
Hence, the asthenosphere aids plate movement because it is partially molten and allows plates to move over it.
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Important Questions from Geomorphology
Which one of the following is not an igneous rock?
Which of the following statements is/are correct?
1. Hypocenter is the point on the surface of the Earth, nearest to the focus.
2. Velocity of earthquake waves is higher in denser materials.
3. P waves move faster and are the first to arrive at the surface of the Earth.
Select the correct answer using the code given below:
Which one of the following is the lowermost/innermost intrusive igneous rock?
The formation of ‘tors’ on small rocky hills is associated with which among the following?
Which one of the following statements about metamorphic rocks is not correct?
