The Four Layers of Earth

What layer is under the crust?

Mantle

Is the crust thick?

No, it is very thin compared to the rest of the layers. In some places, it's only 4 miles thick.

Has anyone gone down inside the mantle?

No. But we have drilled into the top edge of it.

What is the crust made of?

Rock and soil

What is the mantle made of?

Rocks and metals. Some of the rocks are so hot they are liquid.

Is the Inner Core liquid or solid?

Even though it's very, very hot, it's a solid.

True/False: The Earth's mantle lies directly below the inner core.

False

True/False: The inner core of the Earth is about nine hundred degrees Fahrenheit.

False

True/False: The inner core of the Earth is made of liquid iron and nickle.

False

What makes up the Outer Core?

Hot rocks and minerals that are in liquid form.

What is the 4th layer of Earth?

Inner Core

How many parts does the core have?

Two.

What do you call the hot melted rocks in the mantle that squirt up through the cracks in the crust?

Volcano

Can you see and touch the crust?

Yes

The deepest par of the Earth is the _______________________.

core

The coolest layer is the __________________.

crust

We walk on the Earth's ______________________.

crust

Where is the Earth's crust the thickest?

Below the continents.

What is the outside layer of Earth?

Crust

Explain how scientists believe the Earth's four layers were formed.

Scientists believe the Earth was once a hot ball made of metal and rock. As it cooled, the heavier parts sank to the inside and the lighter parts (rocks) stayed on the outside.

What are the two parts of the core?

The Outer Core and the Inner Core.

What is under the mantle?

The core.

Which layers of the Earth are made mostly of metals?

The inner core & outer core

How is the Earth's mantle like a peanut butter sandwich?

The mantle has three layers, like a peanut butter sandwich.

The layer under the crust is the _______________________.

mantle