1. Standard
S6E5a.
Compare and contrast earth’s layers including temperature, density, and composition

2. Crust Density: The least dense layer: Outermost
Thickness: The thinnest (32 km or 25 miles) layer
Temperature: The coolest layer
Composition: Mostly Oxygen (47%) and Silicon (28%)
Connection Think, Pair, Share: If it is the top layer do you think it is the densest or least dense layer?

3. What Does Crust Look Like?
A lot of the crust is hard to see because it is covered by soil, rock and water
Anywhere you can see rock, you are seeing the crust of the Earth!!!

4. 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?

5. Continental Crust Makes up continents Light rocks, such as granite
Thicker than ocean crust
Granite--

6. Oceanic Crust Makes up ocean floor Contains dense rock, such as basalt
Sinks below continental plates
Thinner than continental crust
Basalt--

7. Crust Review:
Location:
Temperature:
Density:
Made up of:
Thickness:

8. Mantle Density: More dense than crust: Beneath crust
Thickness: The thickest layer (2900 Km)
Temperature: 870-4,400 degree Celsius; 2nd hottest
Composition: Mostly oxygen (44%), Silicon (21%), Magnesium (22.8%)
State of Matter: Mostly Solid, Oozy

9. 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?

10. 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

11. Mantle Review:
Location:
Temperature:
Density:
Made up of:
Thickness:

12. 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”

13. ASTHENOSPHERE & MESOSPHERE
Hotter, softer layers of rock under the lithosphere
Contains convection currents (mantle is constantly rising and sinking)

14. 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?

15. Outer Core Density: More dense than mantle Composition: Iron & Nickel
Thickness: 2200 km thick
State of matter: Liquid
Responsible for magnetic field

16. Inner Core Density: Most dense layer Composition: Iron & Nickel
Thickness: 1200 km
Temperature: Hottest layer
State of matter: Solid
So much pressure that despite the hot temperature that would melt the rocks it stays solid.

17. Core Review:
Location:
Temperature:
Density:
Made up of:
Thickness:

18. Layers of the Earth Rap

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

20. On back side of notes draw and label the Earth you see in your hand
Crust
Mantle
Outer Core
Inner Core

21. Earth Layers Tree Diagram
Crust
Temperature
Density
Composition
Picture
Mantle
Outer Core
Inner Core

22. Question
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.
Write your claim and evidence (why does each layer represent the each part of the egg)

23. Layers of the Earth Rap

24. Earth’s Layers