Earth's Processes: Rocks Online Practice

Question

Complete this assessment to review what you’ve learned. It will not count toward your grade.
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Question
Which statements are true descriptions of Earth's interior layers? Select the two correct answers.(1 point)
Responses

The crust is composed of iron with nickel and sulfur.
The crust is composed of iron with nickel and sulfur.

The outer core is composed of different elements than the inner core.
The outer core is composed of different elements than the inner core.

The asthenosphere is located below the lithosphere.
The asthenosphere is located below the lithosphere.

The mantle is composed of silicate material.
The mantle is composed of silicate material.

The mesosphere is the outermost layer of Earth.
The mesosphere is the outermost layer of Earth.
Remaining Attempts : 3

Answer 1

The two correct statements that describe Earth's interior layers are:

1. The asthenosphere is located below the lithosphere. - This is true, as the asthenosphere is a semi-fluid layer of the mantle located directly beneath the rigid lithosphere.

2. The mantle is composed of silicate material. - This is also true, as the mantle is primarily made up of silicate minerals.

The other options are incorrect for the following reasons:

• The crust is not composed of iron, nickel, and sulfur. The crust is primarily made of lighter silicate minerals.
• The outer core is composed of similar elements (primarily iron and nickel) but is in a liquid state, while the inner core is solid, but they are composed of many of the same elements.
• The mesosphere is not the outermost layer of Earth; the outermost layer is the crust. The mesosphere refers to a part of the mantle below the asthenosphere.