Vocabulary words
• Earth
• Crust
• Mantle
• outer core
• inner core
• Lithosphere
• asthenosphere

Day 1
• B: Earth Layer ’s pre-assessment
• D: Earth Layers notes
• A: Exit Slip

• The Earth is divided into four main layers.
1. Inner Core
2. Outer Core
3. Mantle
4. Crust

The Crust
• The crust is the outermost layer of the
Earth.
• This crust is not a solid shell. It is broken up into huge, thick plates that drift on top of the soft, underlying mantle.
• It is made of oxygen, silicon, aluminum.

Two Types of Crust
• Continental crust is the crust the makes up the continents. It is thicker and older than oceanic crust.
• Oceanic crust is the crust below the oceans. It is thinner and younger than the continental crust.
• Example: 

The Mantle
• The mantle is the layer of Earth between the crust and the core.
• ● It contains most of the Earth’s mass.
• ● It has more magnesium and less aluminum and silicon than the crust.
• ● The mantle is denser than the crust.

The mantle divided into 2 parts:
• Upper mantle
• Lower mantle.

Sub Layers of the Mantle
1.
LITHOSPHERE :
 This is the “crunchy” layer of the Earth.
 It includes the crust and the very uppermost part of the upper Mantle.
2.
ASTHENOSPHERE:
 Soft – can bend like plastic, layer in the upper portion of the mantle.
 It is located right below the Lithosphere.
 Lithosphere floats on this layer (like jello)

Day 2

The core
• CORE: (Egg Yolk)
• Located below the Mantle.
• It is divided into 2 layers
• Outer Core
• Inner Core

Outer Core
• Is liquid and is made up of mostly iron
(easily magnetized)
• The movement of materials in the liquid
O.C. is inferred to be the cause of Earth’s magnetic field!
• The O.C. is about 2250 km thick.

Inner Core
• Is the center of the Earth
– 1200 km thick.
• It’s solid iron and nickel.
Most dense layer
(heaviest)
• The increased pressure causes the I.C. to be solid

Students: Draw this illustration.

Exit Slip:
1) What are the four layers of the Earth?
2) The Earth ’s crust is very ______?
3) The mantle is the largest layer of the
Earth? True or False
4) Is the Outer Core a liquid or a solid?

Answers!
1) Crust, Mantle, Outer Core, Inner Core
2) Thin
3) True
4) Liquid

Day 3
• B: EGG demonstration
• D: Play Bill Nye video with worksheet
• Link to video: https://www.youtube.com/watch?v=AvtvSxnS_A
• A: Compare notes

After the video:
• After the video list 3 things you know now because of the video that you did not know before:
• 1.
• 2.
• 3.

Day 3 (optional)
• The ppt may take 2 days so I left this as a
“ catch up ” /optional day.
• Before: Read Magic school bus “ Inside the Earth ”
• During: Earth ’ s layers foldable
• After: Complete the foldable and keep as a study guide