Question

question 7(multiple choice worth 3 points)
(03.02 mc)
the characteristics of two layers of earths crust are listed.
layer a: hard, rigid outermost layer of earth
layer b: \plastic\ layer containing the mesosphere
which statement is true?
layer a is the crust and layer b is the mantle.
layer a is the mantle and layer b is the crust.
layer a is the outer core and layer b is the inner core.
layer a is the inner core and layer b is the outer core.

Explanation:

The Earth's crust is the hard, rigid outermost layer. The mantle has a "plastic" - like layer (asthenosphere which is part of the upper mantle and the mesosphere is also part of the mantle). So, Layer A (hard, rigid outermost) is the crust and Layer B ("plastic" layer with mesosphere) is the mantle.

Answer:

Layer A is the crust and Layer B is the mantle.