Bell Ringer

• Create a KWL Chart about “Earth’s Layers”

What you Know What you Want to Know

What you Learned (don’t fill out yet!)

LAYERS OF THE EARTH

Directions: Fill out at least 4 facts in the “Learned” column from the brainpop video

http://www.brainpop.com/science/earthsystem/earthsstructure/

How Many Layers Are There?

• There are four layers of the Earth:- the crust- the mantle- the outer core- the inner core

Earth Layers K.I.M Chart

Key Term Information Memory Cue

Crust• The crust is the

thinnest (32 km or 25 miles), outermost layer of the Earth

• The crust is the least dense layer

• Crust is the coolest layer in temperature

• Composition: Mostly Silicon (28%) and Oxygen (47%) Connection Think, Pair, Share: If it is the

top layer do you think it is the densest or least dense layer?

What Does Crust Look Like?

• Anywhere you can see rock, you are seeing the crust of the Earth!!!

A lot of the crust is hard to see because it is covered by soil, rock and water

What could we compare the crust of the Earth to?

• Example: It is similar to the peel of an apple in the sense that it is thin and covers the outside of the Earth

Think Pair Share—any other ideas?

Continental Crust• Makes up continents• Light rocks, such as granite• Mountains are part of crust

that stick out• Thicker than ocean crust

GRANITE--

Oceanic Crust

• Makes up ocean floor• Contains dense rock, such as basalt• Thinner than continental crust

BASALT--

Crust Review:

• Location: • Temperature:• Density:• Made up of:• Thickness:

Mantle• The mantle is the thickest

layer (1800 miles), located in the middle of the Earth

• HOT (870-4400 degree Celsius!)

• More dense than crust• Composition: Mostly

oxygen (44%), Silicon (21%), Magnesium (22.8%)

What could we compare the Mantle of the Earth to?

• Example: It is similar to the white part of an apple in the sense that it is the thickest part

Think Pair Share—any other ideas?

Mantle

• The Mantle is HOT (870-4400 degree Celsius!) • At this temperature the rock begins to melt making

the Mantle thick and oozy!• Mantle is what bursts out of volcanoes

• Ellen video

Mantle Review:

• Location:• Temperature:• Density:• Made up of:• Thickness:

Lithosphere

• Made up of crust and very top of mantle

• Floats on top of the asthenosphere and slides around slowly

• Broken up pieces are called “tectonic plates”

ASTHENOSPHERE

• Hotter, softer layer of rock on which the lithosphere rests

• Contains convection currents (mantle is constantly rising and sinking)

Core

• The core is the hottest and most dense layer, located in the center of the Earth

• Composition: Iron & Nickel

Connection Think, Pair, Share: If it is the inner layer do you think it is the densest or least dense layer?

What could we compare the Core of the Earth to?

• Example: It is similar to the seeds or core of an apple in the sense that it is the center and the hardest/densest part.

Think Pair Share—any other ideas?

Outer Core

• Liquid• Oozy, flowing due

to high temperature

• Responsible for magnetic field

• 1400 miles thick

Inner Core

• Solid• Hard, dense center• 800 miles thick• Hottest layer

– So much pressure that despite the hot temperature that would melt the rocks it stays solid.

Core Review:

• Location:• Temperature:• Density:• Made up of:• Thickness:

Layers of the Earth Rap

On back/left hand side of notes draw and label the Earth you see in your hand

On back/left hand side of notes draw and label the Earth you see in your hand

MantleCrust

Inner CoreOuter Core

Earth Layers Tree DiagramEarth Layers

Crust

Temperature

Density

Composition

Picture

Mantle Outer Core Inner Core

Bell Ringer

The Earth is like an egg. Explain this analogy by relating each part of a peach (each layer—shell, egg white, yolk) to each layer of the Earth. How are the Earth and an egg similar in this analogy? Are there any ways, in which the analogy doesn’t fit—that the Earth and peach’s layers are not similar?

Layers of the Earth Rap

StandardS6E5a.Compare and contrast earth’s layers including temperature, density, and composition

Please listen carefully to the following instructions

This foldable is a major gradeAnd will be used throughout our six weeks…

EARTH’S LAYERSFOLDABLE

Step 1Materials:2 Sheets of paper (any color)Coloring pencilsPen or PencilScissorsGlueEarth’s Layers Foldable Handout (teacher will pass them out….just wait)

Step 2Now…Take you Earth’s Layers Foldable

Handout and color it using the following Color Key:

Inner Core- REDOuter Core-RED-ORANGELower Mantle-ORANGEMiddle Mantle-LIGHT-ORANGEUpper Mantle-YELLOWOceanic Crust- DARK BROWNContinental Crust- LIGHT BROWNOcean - BLUE

Step 3

Information: Fill out the 4 boxes using information containing the composition, state of matter, and thickness of each layer from your notes or book.

Step 3 continued….

The CrustComposition: The crust is made of…

Thickness: The thickness of the crust is about…km

State of matter: The state of matter of the crust is ……(solid, liquid or gas)

Step 4Cut out the layers of the earth diagram on the dotted line and glue the diagram in your notebook. The Earth Layers title can be glued at the top of the page as well.

Step 5Cut out and Glue the 4 boxes of

information containing the composition, state of matter, and thickness of each layer (make sure you filled it out) on the right or left side of that layer (example: the information for the crust should be in the right or left of the top layer).

Step 6Cut out and Glue the 12 small words on the correct area of your diagram.

Earth’s Layers

Bell RingerWhy is the inner core the most dense layer? Hint: Think about the density column with the syrup, water, dish soap, and oil that we examined earlier this year

Stations1. Word Sort: Match term with pictures and definition. When finished, raise your hand. Copy into notebook when correct.

When finished, finish homework (Earth Layers Foldable and Questions)

2. U.S.A Test PrepComplete “Geology” assignments. All assignments will be due at the end of January