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AnnyKZ [126]
2 years ago
6

What evidence do scientists have concerning the properties of the asthenosphere?

Social Studies
1 answer:
Vlad [161]2 years ago
5 0

The heat from volcanic lava comes from near the asthenosphere. The asthenosphere is a zone of Earth's mantle beneath the temperature lithosphere that is thought to be significantly hotter and more fluid than the lithosphere. The asthenosphere spans from roughly 100 km (60 miles) to about 700 km (450 miles) below the Earth's surface.

The asthenosphere boundary is essentially characterized by temperature, and it begins when the crust reaches 1300° C. At this temperature, the crust begins to melt and move more like a liquid. The asthenosphere is crucial in plate tectonics because convection currents slowly shift the tectonic plates above.

To learn more about asthenosphere, click here.

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