Earth's Layers

Front

What are the four main layers of the Earth?

Back

Crust, Mantle, Outer Core, Inner Core.

Front

What is the Earth's crust?

Back

The outermost layer of the Earth, which is solid and has the coolest temperatures.

Front

What is the mantle?

Back

The layer of the Earth located beneath the crust, made of semi-solid rock that flows slowly.

Front

What is the outer core?

Back

A layer of the Earth that is a pure liquid, composed mainly of iron and nickel.

Front

What is the inner core?

Back

A solid metal ball made mostly of iron and nickel at the center of the Earth.

Front

Which layer of the Earth is the hottest?

Back

The inner core.

Front

Which layer of the Earth is the thickest?

Back

The mantle.

Front

What is the state of matter of the outer core?

Back

Liquid.

Front

What is the state of matter of the inner core?

Back

Solid.

Front

What is the main composition of the Earth's inner core?

Back

Mostly iron and nickel.