Earth Layers Lessons

Earth's Layers

What is happening under the crust?

Earth's Layers

• Earth is made of four layers.

  • Crust

  • Mantle

  • Outer Core

  • Inner Core

• As you dig deeper, Earth gets hotter.

• Scientists made inferences about the inner layers. We cannot really dig through the Earth because the inner layers are so hot!

Multiple Choice

What is the correct order (starting from the surface) of Earth's layers?

• mantle, outer core, inner core, crust
• inner core, outer core, mantle, crust
• crust, mantle, outer core, inner core

Multiple Choice

How does temperature change as you move from the crust to the core?

• it gets cooler
• it gets hotter
• it stays the same
• the core is frozen

Multiple Choice

How did scientists learn about the layers?

• They dug a really deep hole.

• They made inferences.

• They sent a rocket to the inside of Earth.

Multiple Choice

Why can't scientists observe the core?

• It is too cold!

• It is too hot!

• They can observe the core.

Reorder

Organize the Layers from the Surface to the Deepest.

• Crust

• Mantle

• Outer Core

• Inner Core

1

2

3

4

• 1
• 2
• 3
• 4

Open Ended

"The four layers of Earth are ____, ____, Outer ____, Inner ____."

The Crust

• We live on Earth's crust.

• It is the outside layer of the Earth.

• The crust is broken into 12 ​pieces, called plates.

• The plates hold the continents and oceans.

• The continents are made of cooled rocks. ​

Multiple Choice

What layer is shown by letter A?

• Crust
• Mantle
• Outer core
• Inner core

Multiple Choice

This layer is where we live and is made of cool solid rock

• Crust

• Mantle

• Core

Multiple Choice

We live on the ___.

• Crust

• Mantle

• Outer Core

• Inner Core

Multiple Choice

The crust is made of ___.

• Metal

• Liquid Rock

• Solid Rock

• Inner Core

Multiple Choice

The crust is ___.

• One smooth shell

• Divided into 12 plates

The Mantle

• The mantle is the second layer.

• The mantle is made of hot liquid rock called magma.

• We can observe magma when a volcano erupts.

• When magma comes to the crust, it cools to form new rocks. ​

Multiple Choice

What layer is shown by letter B?

• Crust
• Mantle
• Outer core
• Inner core

Multiple Choice

This layer is made of hot liquid rocks (magma).

• Crust

• Mantle

• Core

Multiple Choice

The mantle is made of ___.

• Metal

• Liquid Rock

• Solid Rock

Multiple Choice

The hot liquid rock inside the mantle is called ___.

• Magma

• Lava

• Fireballs

Multiple Choice

How have scientists learned about the mantle?

• By drilling down to observe it directly

• By taking special vehicles to visit the mantle

• By observing pieces of the mantle that rose to Earth's surface

Multiple Choice

We see magma during ____.

• Floods

• Earthquakes

• Volcanoes

• Blizzards

Multiple Choice

When magma cools on the crust, it forms ___.

• Mudslides

• New rocks

• Oceans

Open Ended

One way the crust and mantle are similar is ________.

Open Ended

One way the crust and mantle are different is ________.

The Core

• The core is made of hot metal.

• The core has two layers - Outer Core and Inner Core.​

• The Outer Core is liquid, but the Inner Core is solid. ​

• The Outer Core ​creates Earth's magnetic field.

• ​​The Inner Core is as hot as the Sun!

• We cannot observe the core because it is so hot. We have to make inferences.

Multiple Choice

What layer is shown by letter C?

• Crust
• Mantle
• Outer core
• Inner core

Multiple Choice

What layer is shown by letter D?

• Crust
• Mantle
• Outer core
• Inner core

Multiple Choice

This layer is made of extremely hot metal

• Crust

• Mantle

• Core

Multiple Choice

The core is made of ___.

• Solid Rock

• Liquid Rock

• Metal

Multiple Choice

This layer is made of liquid metal because it is so hot.

• Crust

• Mantle

• Outer Core

• Inner Core

Multiple Choice

This layer is made of solid metal because there is so much pressure.

• Crust

• Mantle

• Outer Core

• Inner Core

Multiple Choice

The Inner Core is the same temperature as ___.

• Neptune

• The Crust

• The Sun

Multiple Choice

Earth has a magnetic field because of the liquid metal in the ____.

• Crust

• Mantle

• Outer Core

• Inner Core

Multiple Choice

Why can't scientists observe the core?

• It is too cold.

• It is too hot.

• They can observe the core.

Multiple Choice

How have scientists learned about the core?

• By drilling down to observe it directly

• By making inferences

• By observing pieces of the core that rose to Earth's surface

Open Ended

"One way the Outer Core and Inner Core are similar is ____."

Open Ended

"One way the Outer Core and Inner Core are different is ____."

Match

Match the layer to its composition.

• Crust

• Mantle

• Outer Core

• Inner Core

Solid Rock

Liquid Rock

Liquid Metal

Solid Metal

• Solid Rock

• Liquid Rock

• Liquid Metal

• Solid Metal

Match

Match the layer to a handy fact.

• Crust

• Mantle

• Outer Core

• Inner Core

The layer we live on

Visible during volcanoes

Creates Earth's magnetic field

The same temperature as the Sun

• The layer we live on

• Visible during volcanoes

• Creates Earth's magnetic field

• The same temperature as the Sun