The Layers of Earth

Year 1 Science

Geology: The Study of EarthConvergent

PangaeaThe Layers of Earth

TransformDivergent

Setting up the Cover Page

Pg # Assignment Name Assignment Name Pg #0 Table of Contents INB Rubric 12 Unit Vocabulary Unit Vocabulary 34 Layers of the Earth-

FoldableLayers of the Earth-

Notes5

Setting up ourTable of Contents

EQ: What are the 4 layers of Earth?

The Layers of Earth

The Layers of the Earth

The Four Layers

The Earth is composed of four layers:1. Crust2. Mantle3. Outer Core4. Inner Core

1. The Crust

• Acts like the skin of an apple• Is the thinnest layer• Under the ocean = oceanic crust• Under the continents = continental crust

Plates

• The crust of the planet is broken into pieces called plates

• The plates “float” on the other three layers

2. The Mantle

• Largest layer• Made of hot dense rock that flows• Can be broken into 2 sections:

- Upper mantle (lithosphere)- Lower/middle mantle (asthenosphere)

The Lithosphere

• rigid rock that sits under the crust

The Asthenosphere

• What the plates “float” on top of• Like plastic

• Causes the mantle to flow

• Hot materials rises, cools, and sinks- cycle repeats over and over

Convection Currents

3. The Outer Core

• VERY HOT!• Liquid that contains

melted metals (iron and nickel)

4. The Inner Core

• Pressure and temperatures are very high• Causes metals to be squeezed together = no

movement• SOLID

Note: Review• Highlight the following terms: Crust, Mantle, Inner Core,

Outer Core, Convection Current, Oceanic Crust, Continental Crust, Lithosphere, Asthenosphere

• In BLUE, draw a square around all information on CRUST• In GREEN, draw a square around all information on MANTLE• In RED, draw a square around all information on OUTER CORE• In PURPLE, draw a square around all information on INNER

CORE

The Layers of Earth Rap