What does this statement mean: The Asthenosphere flows semi-liquid on which the plates move.
Understand the Problem
The question is asking for an explanation of the statement regarding the asthenosphere and its properties related to tectonic plates.
Answer
The asthenosphere is a semi-liquid layer beneath the lithosphere where tectonic plates move due to its ability to flow.
The statement refers to the asthenosphere, a semi-liquid layer of the Earth's upper mantle just below the lithosphere. This layer is capable of flow, and it acts as a fluid-like foundation on which tectonic plates move, thanks to its plasticity and ability to flow under pressure.
Answer for screen readers
The statement refers to the asthenosphere, a semi-liquid layer of the Earth's upper mantle just below the lithosphere. This layer is capable of flow, and it acts as a fluid-like foundation on which tectonic plates move, thanks to its plasticity and ability to flow under pressure.
More Information
The asthenosphere is crucial in the movement of tectonic plates because its semi-liquid nature allows for motion via convection currents. This behavior enables various geological phenomena like earthquakes and volcanic activity.
Tips
A common mistake is thinking the asthenosphere is completely liquid. It's actually semi-liquid or behaves plastically under stress, allowing the plates to move.
Sources
- Asthenosphere - Wikipedia - en.wikipedia.org
- Flow in the asthenosphere drags tectonic plates along - news2.rice.edu
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