1. FALCON FOCUS
ON YOUR OWN… Search for the 6 differences between the two pictures.

2. Falcon Focus . Answer the questions on the Falcon Focus sheet you picked up.
Label the layers of the Earth based on the picture
Describe how density changes as you move further
down into the Earth.

5. Crust Position: Outermost layer Density: Least dense layer of all
Density: Least dense layer of all
2 types of crust:
Oceanic: thinner,
more dense
Continental: less dense

6. Crust continued… Composition: Solid rock
Made mostly of Silicon & Oxygen
Oceanic Crust = Basalt
Continental Crust = Granite

8. Lithosphere
 Position: Part of the crust that is on the top of the mantle
Features: Broken into pieces called Tectonic Plates
7th period left off

10. Asthenosphere Position: Top portion of the Mantle
Position: Top portion of the Mantle
Features: Contains Convection Currents

13. Mantle Position: Middle Layer Features: Thickest Layer
Features: Thickest Layer
Density: Density increases with pressure the deeper you go into the Mantle
Composition:
Hot, softened rock
Contains Iron and
Magnesium

15. Outer Core Position: Outer part of the core
Density: Very dense, only less dense than Inner Core
Composition:
Slow-flowing liquid
Mostly Iron and Nickel

16. Inner Core Position: Deepest layer Density: Most dense layer
Composition:
A spinning solid
Mostly Iron and Nickel

17. If we can’t reach the Mantle, how do we know what it’s made of??
Scientist track seismic waves (these come from Earthquakes) through the earth’s layers and they examine materials ejected from volcanic activity, which have helped scientists discover what the MANTLE is made of.
Most lava that comes from volcanoes is actually just melted crust and is not material from the mantle and/or the core.

18. So what about the Inner Core and Outer Core?
So what about the Inner Core and Outer Core?
Scientists know what the inner and outer core are made of (composition) based on the movement of seismic waves through the layers.

19. Why is the Inner Core solid??
Even though it is really hot, the weight of all of the other materials above it (crust, mantle, and outer core) put a lot of pressure on the inner core, keeping it solid!
Why does the Earth have a Magnetic Field??
The magnetic field is caused by the movement of the inner (spinning) and outer core (flowing liquid).

20. 3-2-1 Reflection on your notes paper
Exit Ticket
3-2-1 Reflection on your notes paper