Front

What is the outermost layer of the Earth called?

Back

Crust

Front

What layer lies directly beneath the Earth's crust?

Back

Mantle

Front

What is the layer of the Earth that is liquid and surrounds the inner core?

Back

Outer core

Front

What is the innermost layer of the Earth?

Back

Inner core

Front

What is the primary composition of the Earth's crust?

Back

Solid rock and soil

Front

What is the main characteristic of the mantle?

Back

It is semi-solid and can flow slowly over time.

Front

What is the temperature range of the outer core?

Back

Approximately 4,000 to 6,000 degrees Celsius.

Front

What is the primary material that makes up the inner core?

Back

Solid iron and nickel.

Front

How thick is the Earth's crust on average?

Back

About 5 to 70 kilometers.

Front

What is the process called that describes the movement of tectonic plates?

Back

Plate tectonics.