Download Falcon Focus

FALCON FOCUS
ON YOUR OWN… Search for the 6 differences between
the two pictures.
Falcon Focus
.
Answer the questions on the Falcon Focus sheet you picked up.
1. Label the layers of the Earth based on the picture
2. Describe how density changes as you move further
down into the Earth.
Falcon Focus: Label the following
layers
Essential Question: Why is the inner core of the Earth
solid if it the hottest layer?
Falcon Focus: Label the following
layers
Essential Question: What challenges stand in the way
of sending explorers to the center of the earth?
FALCON FOCUS
State one (1) difference and one
(1) similarity between the outer
core and the inner core
Earth’s Layers
•
How are the earth’s
layers similar to an egg?
•
Shell=crust
•
Egg white=mantle
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Yolk=core
Structure of the Earth
Mantle
•
The Earth is made up of 3
main layers:
•
Core
•
Mantle
•
Crust
Outer core
Inner core
Crust
In which layer is
most of the mass of
the Earth located?
The Three Layers
The Earth is composed of three
different layers. The crust is the
layer that you live on, and it is the
most widely studied and
understood. The mantle is much
hotter and has the ability to flow.
The core (outer core and
inner core) are even hotter
with pressures so great you would
be squeezed into a ball smaller
than a marble if you were able to
go to the center of the Earth!
The Crust
The Earth's Crust is
like the skin of an apple.
It is very thin in
comparison to the other
three layers.
Outermost layer; thinnest
under the ocean,
thickest under
continents; crust & top
of mantle is called the
lithosphere .
The crust is composed of two rocks. The continental
crust is mostly granite. The oceanic crust is basalt.
Basalt is much denser than the granite. Because of this the
less dense continents ride on the denser oceanic plates.
Crust
Position: Outermost layer & Thinnest Layer
Density: Least dense
layer of all
2 types of crust:
Oceanic: thinner,
more dense, younger
rock
Continental: less
dense, older rock
Crust continued…
Composition:
Solid rock
Made mostly of Silicon & Oxygen
Oceanic Crust = Contains Basalt Rock
Continental Crust = Contains Granite Rock
Lithosphere
Position: Lies between the crust and the upper
Mantle
Features: Broken into pieces called Tectonic
Plates & Floats on top of the Asthenosphere.
Asthenosphere
Position: Top portion of the Mantle; known as the
Upper Mantle
Features: Moves the tectonic plates and is a soft
solid.
Mantle
Position: Middle Layer
Features: Thickest Layer and contains the Convection
Currents that helps move the tectonic plates
Density: Density increases with pressure the deeper you
go into the Mantle
Composition:
Is a soft solid
Hot, softened rock
Contains Iron and
Magnesium
Convection Currents
The mantle "flows" because of convection currents.
Convection currents are caused by the very hot
material at the deepest part of the mantle rising, then
cooling and sinking again --repeating this cycle over
and over.
Outer Core
Position: Outer part of the core
Density: Very dense, only less dense than Inner Core
Feature: Is the Only Liquid Layer and is responsible for
Magnetic Field that protects our Planet from Solar Wind
Composition:
Slow-flowing liquid
Mostly Iron and Nickel
Inner Core
Position: Deepest layer
Density: Most dense layer
Feature: Has enough pressure for it to remain
as a solid.
Composition:
A spinning solid
Mostly Iron and Nickel
Temperature
increases as depth increases
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.
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.
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).
Falcon Focus
•
Name 3 differences between oceanic
and continental crust.
Essential Question: How do scientists know about
the Earth's interior?
Falcon Focus
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Essential Question: How does the Earth influence
you and how do you influence the Earth?
1) What are the six layers of the Earth?
2)Name the 2 types of crust.
Review
3) Which layer is the thickest and contains the most mass?
4) Which layer is the only liquid layer?
5)
Which layer is responsible for the magnetic field?
6)
Which layer lies between the crust and the upper mantle?
7)
What moves the soft rocks in the mantle?
8)
The tectonic plates floats on top of which layer?
9)
The tectonic plates are apart of which layer?
10)
Name the 3 non-true solid layers.
Today you will CREATE A CROSS-SECTION POSTER OF THE INTERIOR OF
THE EARTH layers. Be sure to include AND LABEL all 6 layers.
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The Poster Must Also Include the Following:
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1) Creative Title
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2) Give 4 facts about each layer & 1 VERY INTERESTING FACT
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3) Facts about the continental & oceanic crust as well
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4) The Twist: YOU WILL NEED TO FIND A WAY TO REPRESENT YOUR
FACTS BECAUSE YOU CAN NOT USE WORDS TO DESCRIBE
THE EARTH LAYERS !!!!!!!
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5) AT THE BOTTOM STATE WHICH LAYER DO YOU THINK IS
THE MOST IMPORTANT LAYER AND WHY? PROVIDE
EVIDENCE FOR YOUR REASONING OF WHY?
Agenda for Today
Today you will create a diagram of the Earth’s layers and
label each layer. Be sure to include all 6 layers.
•
The Poster Must Also Include the Following:
•
1) Creative Title
•
2) Give 3-4 facts about each layer
•
3) Facts about the continental & oceanic crust as well
Exit Ticket
3-2-1 Reflection on your notes paper