Question

question 15 of 20 : select the best answer for the question. 15. what type of material is found in the asthenosphere? a. an incompressible fluid of molten rock b. a viscoelastic fluid of molten rock c. a mixture of magma and superheated water d. solid rock mark for review (will be highlighted on the review page) << previous question next question >>

Explanation:

The asthenosphere is part of the Earth's mantle. It is a region with a viscoelastic (having both viscous and elastic properties) fluid - like behavior of molten rock. Option A is incorrect as the asthenosphere material is not incompressible in the way described. Option C is wrong because it's not a mixture of magma and superheated water. Option D is incorrect as the asthenosphere is not solid rock; the lithosphere is more associated with solid rock, while the asthenosphere has a more fluid - like, viscoelastic molten rock.

Answer:

B. A viscoelastic fluid of molten rock