The document discusses the layers of the lithosphere. The lithosphere includes the crust and upper mantle, which make up the rigid outer layer of the Earth. The crust is the outermost layer and varies in thickness from 32-40 km. It is divided into two layers - the upper sial and lower sima. Below the crust is the mantle, which is around 2,900 km thick and composed of hot, solid rock that flows slowly over time. The three main layers of the lithosphere are the crust, upper mantle, and lower mantle.

1. Learn Science
LAYERS OF THE LITHOSPHERE

2. Discussion
lithosphere (Ancient Greek: λίθος [lithos] for "rocky",
and σφαίρα [sphaira] for "sphere") is the
rigid,[1] outermost shell of a terrestrial-type planet,
or natural satellite, that is defined by its rigid
mechanical properties. On Earth, it is composed of
the crust and the portion of the upper mantle that
behaves elastically on time scales of thousands of
years or greater. The outermost shell of a rocky planet,
the crust, is defined on the basis of its chemistry and
mineralogy.
The study of past and current formations of landscapes
is called geomorphology.

3. Discussion

4. EARTH’S LITHOOSPHERE
Earth's lithosphere includes the
crust and the uppermost mantle,
which constitute the hard and rigid
outer layer of the Earth. The
lithosphere is subdivided
into tectonic plates.

5. LAYERS OF THE LITHOSPHERE

6. THE CRUST
 IS THE OUTERMOST LAYER OF THE EARTH
 HAS A DEPTH OF ABOUT 32 TO 40 KM
 THE THINNEST LAYER
 THE UPPERMOST LAYER is known as the sial
SIAL-( COMPOSED MAINLY OF SILICON AND ALLUMINUM
THE BOTTOM LAYER OF THE CRUST IS CALLED SIMA.
( THIS IS MADE MOSTLY OF SILICON AND MAGNESIUM.

7. THE CRUST

8. THE MANTLE

10. LAYERS OF THE LITHOSPHERE

11. QUIZ

12. 1. ITS ABOUT 4960DEEP?
A. CORE
B. CRUST
C. MANTLE

13. 2. IT IS COMPOSE MAINLY OF
VERY HOT, SOLID ROCKS THAT
FLOWS.
A. CRUST
B. MANTLE
C. CORE

14. 3. SOLID PART OF THE EARTH
A. ATMOSPHERE
B. MANTLE
C. LITHOSPHERE

15. ENUMERATION

16. 4-6
WHAT IS THE 3 MAIN LAYERS
OF THE LITHOSPHER?

17. 7-8
TWO TYPES OF CRUST

18. IDENTIFICATION

19. 9. ITS ABOUT 32 KM THICK
MADE MAINLY OF GRANITE
ROCKS

20. 10. THE OCEAN BED, IT IS
ABOUT SEVEN KILOMETERS
THICK AND MADE MAINLY OF
BASALT.