Does the upper mantle have convection currents or the asthenosphere, or both?
Understand the Problem
The question is asking about the presence of convection currents in the upper mantle and whether these currents are associated with the asthenosphere or both layers. It involves understanding the geological features of the Earth's mantle.
Answer
Both the upper mantle and the asthenosphere have convection currents.
The final answer is that both the upper mantle and the asthenosphere have convection currents.
Answer for screen readers
The final answer is that both the upper mantle and the asthenosphere have convection currents.
More Information
The asthenosphere is part of the upper mantle and is where convection currents facilitate the movement of tectonic plates. The slower flow of material in the mantle due to heat and pressure differences results in these convection currents driving surface geological activity.
Tips
A common mistake is assuming that convection only occurs in one specific layer of the mantle, but both the upper mantle and asthenosphere exhibit convection currents.
Sources
- Convection and Mantle Flash Cards - quizlet.com
- Mantle - National Geographic Education - education.nationalgeographic.org
- Mantle convection - Wikipedia - en.wikipedia.org
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