According to the theory of isostasy, which statement must be true? A. The asthenosphere has the same density as the lithosphere.
B. The lithosphere has the same density as the core.
C. The lithosphere is denser than the asthenosphere.
D. The asthenosphere is denser than the lithosphere.
Question & Answer
According to the theory of isostasy, which statement must be true?
1 Answer
Verified archiveThe correct answer is D. The asthenosphere is denser than the lithosphere.
Explanation: According to the theory of isostasy, the Earth’s lithosphere (the rigid outer layer) floats on the more fluid-like asthenosphere (the upper part of the mantle). The asthenosphere is less rigid and has a lower density compared to the lithosphere, allowing the lithosphere to rest above it. Therefore, it is true that the asthenosphere is denser than the lithosphere. If you have more questions or need further clarification, feel free to ask!