Earth's Structure

The inner layer of the earth is the

• Mantle

• Core

• Crust

This layer is Earth's only liquid layer

• Crust

• Mantle

• Outer Core

• Inner Core

At a subduction zone, the plate that goes below the other is

• larger

• smaller

• more dense

• less dense

During an earthquake, which type of wave arrives at a seismograph first?

• Primary Wave

• Secondary Wave

• Body Wave

• Raleigh Wave

What is the cause of Earth's magnetic field?

• A solid core

• Convection currents

• Earth's rotation in space

• Plate tectonics

The lithosphere is made up of

• the mantle and core

• the lower mantle and outer core

• the mantle and the crust

• the upper mantle and the crust

The two types of crust

• Oceanic and Convergent

• Oceanic and Continental

• Continental and Lithospheric

• Convergent and Lithospheric

Earth's core is made primarily of

• Iron

• Silicate

• Granite

• Basalt

Which is the thinnest layer of Earth?

• Inner Core

• Outer Core

• Mantle

• Crust

As you go deeper into Earth

• pressure increases

• pressure decreases

• pressure does not change