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1. The
Earth

2. GEOLOGY
From the Ancient Greek
geo means "earth" and
logia mean "study of”

3. GEOLOGY
An earth science comprising the
study of Earth interior and
composition. The Earth has
layered structures namely the
crust, mantle, inner core and
outer core.

4. The Earth has layered
structures which are important
for understanding the PLATE
TECTONICS THEORY. Studying
the Earth’s interior can help us
understand earthquakes,
volcanoes, and more about the
Earth’s natural processes.

5. The Layers
of the
Earth’s
interior

6. CRUST

7. CRUST
It is the solid (land
part/lithosphere)
and thinnest
outermost layer
part of the Earth.
Volcanic activity is
continually adding
mass to it.

8. CRUST
It is made up of
plates called as
TECTONIC PLATES.
These plates are
continuous in constant
motion due to the
convection currents in
the second layer of the
Earth.

9. CRUST
•Consist all kinds of rocks,
soil and everything you see
above the Earth’s surface
•It is the land which we walk

10. Continental Crust
• the relatively thick part of the earth's crust
that forms the large landmasses

11. Oceanic Crust
• A thin layer of rock separates the Earth's
oceans from the hot mantle beneath them

12. Mantle
The second inner,
thickest and the
largest layer of the
Earth’s interior. It is
thought to be
composed mainly of
olivine-rich of
different steady rock
materials.

13. Mantle
• a layer between the crust and
the outer core
• 85% of the total mass of the
Earth
• 50 miles of the mantle
comprised of rigid hot molten
rocks
• 150 miles are made up of super
hot solid rocks
• Below that is composed of very
solid and steady rock materials
• Largest layer of the Earth

14. Mantle
UPPER MANTLE – The rocks in
this layer are cool and brittle.
Rocks in this layer are brittle
enough to break under stress
and produce earthquakes.
LOWER MANTLE – The rocks
in this layer are hot and soft
(BUT NOT MOLTEN). Rocks are
soft in this layer to easily
subject to forces of breaking.

15. Core
This layer is very hot, very dense center of our
planet. The ball-shaped core lies beneath the
cool, brittle crust and the mostly-solid mantle

16. Core
It is the source
of internal heat
because it contains
radioactive
materials which
release heat and
they break down
into more stable
substances
CORE

17. Core
• It consists of the innermost layer(s)
of the Earth; which may be
composed of solid and liquid layers

18. Outer Core
• is a fluid layer thick and composed of mostly
iron and nickel
• Composed of super hot liquid substance called
LAVA

19. Inner Core
• is the Earth's innermost part
• it has been believed to be primarily a solid ball