Unit 4: Environmental Quality Test

The outermost layer of the Earth is:

• crust

• inner core

• mantle

• outer core

Which layer lies directly above the inner core?

• crust

• mantle

• asthenosphere

• outer core

The mantle makes up ________ of the Earth's volume.

• 50%

• 80%

• 100%

• 75%

Which layers make up the lithosphere?

• Crust, mantle, and core

• Only the crust

• The bottom part of the upper mantle

• Crust and uppermost part of the mantle

Which layer of the earth consists of molten material?

• crust

• inner core

• outer core

• lithosphere

The _________ is the outermost layer of the Earth?

Which layer lies directly above the outer core?

• crust

• mantle

• lithosphere

• all of them

Which layers make up the Tabosphere?

• crust, and upper mantle

• upper and lower mantle

• lower mantle and outer core

• none

For which reason is the inner core a solid layer of Earth?

• The inner core is solid because of the movement of the outer core.

• The inner core is solid because of a balance between hot and cold temperatures.

• The inner core is solid because of the low pressure and below-freezing temperatures.

• The inner core is solid because of the sky-high pressure and temperatures.

What are plates composed of?

• the outer core only

• lithosphere

• continental crust only

• oceanic crust only