Earth's Interior

Which layer of earth is molten (liquid metal)?

• inner core

• outer core

• crust

• lithosphere

Which layer of Earth is solid and why?

• The inner core is solid because of movement of the outer core.
• The inner core is solid because of the freezing temperatures.
• The inner core is solid because of the extreme pressure from the other layers.
• The outer core is solid because of the extreme pressure from the other layers.

Which layer is plastic and has the consistency of silly putty allowing movement?

• asthenosphere
• lithosphere
• mesosphere
• crust

Which of Earth's layers is made of SOLID iron and nickel?

• crust 
• mantle
• outer core
• inner core

How are the materials of the Earths core different from those of the crust (in general)?

• They are harder

• They are more dense

• They are older

• They are darker in color

Which area of the Earth is least dense ?

• Outer core

• inner core

• mantle

• crust

Which of the following increases as depth increases into the Earth? (choose all that apply)

• time

• Pressure

• temperature

• density

What is the thinnest layer of the Earth?

• Mantle

• inner core

• outer core

• crust

How do scientists know the Earth has layers?

• Drilling into the mantle

• Volcanoes

• Seismic waves data

• ocean waves

Which layer contains BOTH the upper mantle and the crust?

• lithosphere
• atmosphere
• mesosphere
• athensosphere