Layers of the Earth

Which layer is made of "flowing" solid rock (think clay or pudding)?

• crust

• mantle

• core

Which layer is made of LIQUID iron and nickel?

• lithosphere

• mesosphere

• outer core

• inner core

Sally is researching the differences that exist in each layer of the Earth. Which of the following best describes Earth's crust?

• Solid, rocky

• Liquid, metallic

• Semisolid, convecting

• Dense, extremely hot

Which of the following is true regarding the composition of the lithosphere?

• The lithosphere is mostly liquid, with some medium-density materials, such as silicon.

• The lithosphere is more plastic and flows slowly compared to the solid crust of Earth.

• The lithosphere includes the core and the lower portion of the mantle.

• The lithosphere includes the crust and the uppermost portion of the mantle, which is sold and rigid.

The layer that lies beneath the mesosphere and surrounds the inner core.

• lithosphere

• outer core

• inner core

• asthenosphere

Which layer of the Earth is the THINNEST?

• crust

• mantle

• core

Which layer of the Earth is the THICKEST?

• crust

• mantle

• mesosphere

• inner core

Which layer is the hottest?

• mesosphere

• lithosphere

• outer core

• inner core

Why is the inner core solid?

• its unknown
• what it's made of
• the pressure
• it is colder than the outer core

What is the correct order (starting from the surface) of Earth's compositional layers?

• crust, core, mantle

• mantle, core, crust

• crust, mantle, core

• core, crust, mantle