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 outer 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.

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

• asthenosphere

In which layer of Earth’s interior is the inferred temperature 6,000º C?

• crust

• outer core

• inner core

• mantle

The pressure at the boundary between the stiffer mantle and outer core is ___.

• 0.1 millions of atmospheres

• 0.5 millions of atmospheres

• 1.5 millions of atmospheres

• 3.1 millions of atmospheres

Which statement about the crust of earth is correct?

• Continental crust is made of granite and has a density of 2.7

• Continental crust is made of basalt and has a density of 2.7

• Oceanic crust is made of granite and has a density of 2.7

• Oceanic crust is made of basalt and has a density of 2.7

Which layer of the Earth is the thickest?

• Crust

• Mantle

• Outer core

• Inner core

Order the layers of earth from least dense to most dense. (1 = least dense; 5 = most dense)

• Outer Core

• Continental Crust

• Stiffer Mantle

• Oceanic Crust

• Inner Core