Earth's Interior

Front

What is the thickest layer of the Earth?

Back

The mantle is the thickest layer of the Earth.

Front

Which layer of the Earth do we live on?

Back

We live on the crust.

Front

What causes the movement of Earth's plates?

Back

The movement of Earth's plates is caused by convection currents in the asthenosphere.

Front

Which layer is shown in orange?

Back

The outer core is shown in orange.

Front

Which layer is shown in red?

Back

The inner core is shown in red.

Front

What is the outer core primarily made of?

Back

The outer core is primarily made of liquid iron and nickel.

Front

What is the inner core?

Back

The inner core is a solid sphere made mostly of iron and nickel.

Front

What is the asthenosphere?

Back

The asthenosphere is a semi-fluid layer of the mantle that allows tectonic plates to move.

Front

What is continental drift?

Back

Continental drift is the theory that continents move over geological time.

Front

What is subduction?

Back

Subduction is the process where one tectonic plate moves under another plate.