which statements are true descriptions of earth's interior layers? Select the two correct answers.
a. the asthenosphere is located below the lithosphere
b. the outer core is composed of different elements than the inner core
c. the crust is composed of iron with nickel and sulfur
d. the mantle is composed of silicate material
e. the mesosphere is the outermost layer of Earth
The two correct statements are:
a. the asthenosphere is located below the lithosphere
d. the mantle is composed of silicate material
To determine which statements are true descriptions of Earth's interior layers, let's analyze each option:
a. The asthenosphere is located below the lithosphere.
This statement is true. The lithosphere is the rigid outermost layer of Earth, while the asthenosphere is the partially molten and plastic-like layer below it.
b. The outer core is composed of different elements than the inner core.
This statement is also true. The inner core is predominantly composed of solid iron, while the outer core is primarily made up of liquid iron, with smaller amounts of nickel and other elements.
c. The crust is composed of iron with nickel and sulfur.
This statement is not true. The crust is composed mainly of silicate rocks, such as granite and basalt, and does not consist of iron, nickel, or sulfur.
d. The mantle is composed of silicate material.
This statement is true. The mantle, which lies between the crust and the core, is primarily composed of silicate minerals rich in iron and magnesium, such as peridotite.
e. The mesosphere is the outermost layer of Earth.
This statement is not true. The mesosphere does not exist as an outermost layer. It is actually a region within the Earth's atmosphere that is located above the stratosphere and below the thermosphere.
Based on the above analysis, the two correct statements about Earth's interior layers are:
a. The asthenosphere is located below the lithosphere.
d. The mantle is composed of silicate material.
The correct answers are:
a. the asthenosphere is located below the lithosphere
d. the mantle is composed of silicate material