In this slideshow students will learn about the layers of the Earth.

1. IN: Use the word bank to label the diagram.
Word Bank
Mantle
Inner Core
Crust
Outer Core
Materials:
Notebook
Pencil

2. Objective:
I will be able describe the difference
between the 4 layers of the Earth by
completing a worksheet with facts.

3. Earth's Layers

4. Review
Earth is a "terrestrial" or rocky planet. This means
that it is made up of rocks and minerals. The rocks
and minerals that now make up our Earth were once
just small chunks revolving around our sun.
Over billions of years,
they combined to form
the planet we live on
today. What are the
other rocky planets in our solar system?

5. The Makeup of Earth
As Earth grew larger, its gravity increased. Pressure
beneath Earth's surface caused changes to the
Earth's makeup. Distinct layers began to form. Do
you know any of the names of the layers?
Brainstorm with your table.

6. The Layers of Earth
Our Earth is divided into four major layers: Draw and
label this in your Science Notebook.

7. Earth's Crust
Think of the crust of Earth as the crust of a pizza.
The crust is the outermost layer of Earth, just like the
crust above is the outermost layer of the pizza!

8. There are 2 parts to the crust. One is the land. What
is the other part?
This section is very thin compared to other layers of
Earth (between 5 and 25 miles thick) and it is very
hard and rigid.
The crust is composed
of plates that slide
around on top of the
section below it. This
portion is called the lithosphere .

9. Earth's Mantle
The next layer down is the mantle. This is the largest
layer - about 1,800 miles thick! The mantle is made
up of incredibly hot, semi-solid rock (basically think
of rock in a form sort of like pudding).
This layer makes
up about 2/3 of
Earth's mass.

11. Which best describes the lithosphere?
A The part of the atmosphere which we breathe.
B The layer of Earth that makes up the greatest
mass.
C A layer of Earth that is made of a jello-like
substance.
D The plates of Earth that slide around the surface.

13. What is true of the mantle?
A It is the thickest layer of Earth.
B It is the top layer of Earth.
C It is entirely made of liquid.
D It is the least massive portion of Earth.

15. The mantle is composed of Earth's land and
oceans.
True
False

17. Earth's Outer Core
The Outer Core is so hot that it is entirely liquid. It is
the only liquid layer of Earth. It is made up of mainly
nickel and iron.
To give you an idea
of how hot it is,
nickel becomes
a liquid at 2,650
degrees F and
iron melts at 2,800
degrees F!

18. Earth's Inner Core
At the very center of Earth, you will find the Inner
Core. Like the Outer Core, this layer is also
extremely hot and is made of nickel and iron.
Although the temperature
is higher, the nickel and
iron here are in solid form
because of the intense
pressure that this layer
experiences.

19. Click HERE to
watch the video

20. Glue this into your
notebook
You will need to write a fact
about each layer of the earth
and answer the 4 questions.

21. Click HERE to
Journey to the
Center of the
Earth
Write down 7 facts in
your Science notebook
that you learn as you
move down towards
the center of the Earth.

22. OUT: Use the word bank to label the diagram.
Word Bank
Mantle
Inner Core
Crust
Outer Core