Question

earth science assessment: layers, location, and navigation

1. what is the innermost layer of the earth?

a. mantle
b. outer - core
c. inner - core
d. crust

1. the earths crust beneath the oceans is primarily composed of:

a. granite
b. basalt - dense, hard dark volcanic rock
c. limestone
d. sandstone

1. which layer of the earths make up is the thickest?

a. crust
b. mantle
c. outer core
d. inner core

Explanation:

1. The innermost layer of the Earth is the inner - core. The Earth has layers including the crust, mantle, outer - core, and inner - core, with the inner - core being the deepest.
2. Beneath the Earth's crust in the oceans, the primary composition is basalt. Basalt is a dense, hard dark volcanic rock common in oceanic crust.
3. The thickest layer of the Earth is the mantle. It is the layer between the crust and the core and is much thicker than the crust or the core.

Answer:

1. c. Inner Core
2. B. Basalt
3. b. Mantle