Hot, solid rock in the Earth's crust a. is cooler than surface lava because of the pressure of overlying rock. b. maintains uniform composition as it melts and becomes magma. c. melts at a higher temperature if volatiles such as water and carbon dioxide are added. d. may melt if heat is transferred to it from hot mantle rock rising up into the crust.

Question

Chemistry

Zachariah Palmer

4 February, 16:21

Hot, solid rock in the Earth's crust a. is cooler than surface lava because of the pressure of overlying rock. b. maintains uniform composition as it melts and becomes magma. c. melts at a higher temperature if volatiles such as water and carbon dioxide are added. d. may melt if heat is transferred to it from hot mantle rock rising up into the crust.

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Answers (1)

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Lucille Anderson · Answer 1

d. may melt if heat is transferred to it from hot mantle rock rising up into the crust.

Explanation:

Hot, solid rock in the Earth's crust is a solid outer region of the Earth, Underneath the Earth Structure lies the mantle which is composed of solid rocks especially granite and basalt. The mantle is very hot and may melt if heat is transferred to it from hot mantle rock rising up into the crust therefore forming a molten magma. It may even be hotter (and not cooler as it was stated in the option A which makes it the wrong answer) than the surface lava because of the pressure of the overlying rock. As such, This effect is seen when a volcanic eruption occurs.