1. which layer(s) of the earth’s interior listed below are mostly mafic in composition?

a. continental crust

b. oceanic crust

c. mantle

d. core

2. which layer of the earth's interior listed below is also the full equivalent of a tectonic plate?

select one:

a. outer core

b. crust

c. asthenosphere

d. mesosphere

e. lithosphere

3. the moho discontinuity represents the boundary between which two layers?

select one:

a. the lithosphere and asthenosphere

b. the crust and the lithosphere

c. the crust and the mantle

d. the mesosphere and the core

e. the asthenosphere and the core

4. as a whole, the oceanic crust is a lot older than the continental crust.

a. true

b. false

5. the mesosphere is hotter than the asthenosphere and as a result flows faster than the asthenosphere.

a. true

b. false

6. the asthenosphere is a layer below the lithosphere that has the physical property of:

a. brittle solid

b. ductile solid

c. liquid

7. which of the layers below defined by its composition makes up the lithosphere?

a. mantle and core

b. crust and uppermost mantle

c. crust and mantle

d. crust and core

8. what is the chemical composition of the mantle according to the lecture?

select one:

a. felsic

b. mafic

c. ultramafic

d. pure iron and nickel