Geosphere Unit Test Review

This is the thinnest layer of Earth

• Mantle

• Inner Core

• Outer Core

• Crust

True/False: the hottest layer is the crust

• True

• False

Select all that apply: Layers that are NOT the densest part of Earth?

• Inner core

• Outer core

• Mantle

• Crust

Based on the information in the table, what can you conclude about the density of the Earth’s layers?

• The density of the layers decreases as the pressure increases.

• The density of the layers increases as the temperature decreases.

• The density increases in layers that are closer to the core of the Earth.

• The density increases in layers that are closer to the surface of the Earth.

Which word best describes the lithosphere?

• liquid

• rigid

• bendable

• metal

The mantle "flows" because of large differences in temperature from the bottom to the top, which create convection currents.

• True

• False

What layer is a semi-solid and acts like a plastic?

• Lithosphere
• Inner Core
• Asthenosphere
• Crust

Volcanic eruptions tell us the most about which layer of the Earth?

• Crust
• Mantle
• Outer Core
• Inner Core

Identify each layer - #17.

• Crust
• Mantle
• Lithosphere
• Asthenosphere

What is it called when two oceanic plates move apart and new crust is formed?

• crustal integrating
• sea-floor spreading