Question

Earth's Processes: Rocks Online Practice
Complete this assessment to review what you’ve learned. It will not count toward your grade.
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Question
Which of the following layers is defined by its chemical composition?(1 point)
Responses

inner core
inner core

mantle
mantle

asthenosphere
asthenosphere

lithosphere
lithosphere
Remaining Attempts : 3
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Answer 1

The layer defined by its chemical composition is the **mantle**. While the inner core and outer core are defined more by their physical state (solid and liquid, respectively), the mantle is distinguished by its mineral composition. The lithosphere is a rigid layer formed from the crust and the uppermost part of the mantle, but it involves mechanical properties rather than purely chemical composition.