The Layers of the Earth Vocabulary words Earth

The Layers of the Earth!

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

Earth Layers • The Earth is divided into four main layers. 1. 2. 3. 4. Inner Core Outer Core Mantle 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 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=Avtv. Sxn. S_A • A: Compare notes

After the video: • After the video list 3 things you know 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