Earth's Interior

The largest part of Earth's interior that is made of rock, but is flexible, is the _____.

• lithosphere
• mantle
• crust
• core

The _____ is the inner iron-containing layer of Earth.

• lithosphere
• mantle
• crust
• core

Made of the crust and upper mantle, the _____ makes up the plates that move about Earth's surface..

• seismologist
• lithosphere
• mantle
• crust
• core

The outermost surface of Earth is called the _____.

• lithosphere
• mantle
• crust
• core

The _____ is the slippery surface on which the lithospheric plates move around Earth’s surface.

• Asthenosphere
• Mantle
• Lithosphere
• Crust

What causes Earth's magnetic field?

• outer core's liquid iron currents
• Lithosphere
• inner cores heat
• Asthenosphere's convection currents
• plate movement

Why is Earth’s magnetic field important?

• Causes convection cycles in the mantle
• Causes inner core to remain hot
• protects the Earth from harmful solar radiation
• causes plates to move

The inner core is really hot but solid. Why isn’t the inner core a liquid like the outer core?

• high pressure

• high temperature

• size

• type of rock

With all the layers that make up Earth, which layer is the densest?

• inner core
• deep mantle
• outer core
• Lithosphere
• crust

Which of the Earth is the least dense?

• inner core
• outer core
• deep mantle
• crust
• Asthenosphere