Which layer of Earth contains molten material?

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Study for the Introduction to Physical Geology Exam with quizzes and multiple choice questions. Each question comes with hints and explanations to help you prepare effectively. Get ready for your exam!

Multiple Choice

Which layer of Earth contains molten material?

Explanation:
The main idea is where inside Earth the material is liquid. The outer part of the core is a liquid iron-nickel alloy, kept molten by the extremely high temperatures there. This liquid layer surrounds the solid inner core, which remains solid because the pressures are so immense. The mantle is mostly solid rock, though it can flow very slowly and has zones where partial melt can occur, but there isn’t a globally molten layer like the outer core. The crust is a solid outer shell. So the layer that is molten is the outer core.

The main idea is where inside Earth the material is liquid. The outer part of the core is a liquid iron-nickel alloy, kept molten by the extremely high temperatures there. This liquid layer surrounds the solid inner core, which remains solid because the pressures are so immense. The mantle is mostly solid rock, though it can flow very slowly and has zones where partial melt can occur, but there isn’t a globally molten layer like the outer core. The crust is a solid outer shell. So the layer that is molten is the outer core.

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