It is about the layers of the Earth and the 2 types of crusts.

1. Layers of
the Earth
Kinds of
Crusts

2. What are
the layers
of the
Earth?

3. LAYERS OF THE EARTH
Compare the parts
of the egg to the
layers of the Earth.

4. Watch this!

6. What are the layers of the Earth?

8. -Layers of
Earth
-Lithosphere
consists of
crust and the
upper portion
of the mantle.

9. Map showing the lithosphere of the Earth divided into
segments called tectonic plates.

10. • Plate tectonics states that the lithosphere is
said to be in constant but slow motion.
These motions can range widely.
• Arctic Ridge has the slowest rate (less than 2.5
cm/yr)
• East Pacific Rise has the fastest rate (more than 15
cm/yr).

15. a. Which crust is thinner? Thicker?
b. Which is denser? Less dense?
c. Which is older? Younger?

16. FEATURES OCEANIC CRUST CONTINENTAL CRUST
COMPOSITION
THICKNESS
DENSITY
RECYCLING
AGE

17. FEATURES OCEANIC CRUST CONTINENTAL CRUST
COMPOSITION Basalt Granite
THICKNESS Thinner Thicker
DENSITY Denser Less Dense
RECYCLING
Recycling Is
Present
Recycling Is Absent
AGE Much Younger Older

18. a. Which crust is thinner? Thicker?
b. Which is denser? Less dense?
c. Which is older? Younger?

19. The continental crust is thicker but less dense than the
oceanic crust. Because of the difference in density,
continental crust floats higher than the oceanic
crust.

20. 1. Which type of crust do
the different landforms
belong?
2. Which type of crust are
the water forms situated?
3. What do you think is the
importance of land and
water forms to us?

21. ANSWER THE FOLLOWING.
1. Describe briefly:
a. Lithosphere
b. Tectonic Plates
c. Plate tectonics
2. Differentiate between the two kinds of
crusts.

22. ASSIGNMENT
Enumerate the 7 major
lithospheric plates.

23. Thank You!

24. 1-3 Enumerate the layers of the Earth.
4. It is made up of crust and upper mantle.
5. Lithosphere is subdivided into segments.
What do you call these segments?
6. The lithosphere is said to be in constant but
slow motion. These motions can range widely.
What do you call this motion?

25. 7-10 Differentiate continental from oceanic
crust by filling out the table.
FEATURES CONTINENTAL
CRUST
OCEANIC
CRUST
THICKNESS
COMPOSITION
AGE
RECYCLING Absent
DENSITY Less dense

26. 1-3 Enumerate the layers of the Earth.
4. It is made up of crust and upper mantle.
5. Lithosphere is subdivided into segments.
What do you call these segments?
6. The lithosphere is said to be in constant but
slow motion. These motions can range
widely.
Crust, Mantle, Core
Lithosphere
Tectonic plates
Plate tectonic

27. 7-10 Differentiate continental from oceanic
crust by filling out the table.
FEATURES CONTINENTAL
CRUST
OCEANIC
CRUST
THICKNESS thicker thinner
COMPOSITION granite basalt
AGE older younger
RECYCLING Absent present
DENSITY Less dense denser

28. 1. Familiarize yourselves with
the different plates.
2. Bring the ff. by group.
drawing compass
ruler

29. • The lithosphere is said to be in constant but
slow motion. These motions can range widely.
• The Arctic Ridge has the slowest rate (less
than 2.5 cm/yr), and the East Pacific Rise
near Easter Island, in the South Pacific about
3,400 km west of Chile, has the fastest rate
(more than 15 cm/yr).
• This movement of the lithosphere is called
tectonics.