1. PREPARATION OF AN ICT INTEGRATED
LESSON TO TEACH SOCIAL SCIENCE
PRACTICUM PAPER –X
MERIN ALEX.P
SOCIAL SCIENCE
Reg.no-16914303018

2. INSEARCHOFEARTH’SSECRETS

4. • The Earth’s interiors full of wonders. But there are
many limitation in collecting information about the
mysteries of the earth interior directly. The temperature
and pressure inside the earth increases with depth.

5. Earth has been divided in to different
layers
• Crust
• Mantle
• Outer core
• Inner core

7. crust
• The comparatively thin outer shell of the Earth
• As silica and alumina are the chief contents,
the oceanic crust is also known as SIAL

8. Mantle
• Located beneath the crust
• Two parts-Upper mantle and Lower mantle

9. Core
• Central part of the earth
• Two parts-outer core, inner core

10. FOSSILS
The remains of ancient plants and animals
found in sedimentary rocks are called fossils.

11. ROCKS
If you look around you can see different
colours and hardness. This diversity is due to
its constituents the constituent rocks are
called minerals.
Based on the mode of formation, rocks can be
classified in to three
• Igneous rocks
• Sedimentary rocks
• Metamorphic rocks

12. Igneous rocks
• Igneous rocks are formed by the molten rock
material rising through the fissure in the crust and
solidifying either on the surface of the earth or
within the crust itself

13. SEDIMENTARY ROCK
• Rocks under go weathering in course of time.
The debris so formed will be deposited in the
low regions as layers.

14. METAMORPHIC ROCKS
• When rocks undergo physical and chemical
changes due to high temperature and
pressure metamorphic rocks are formed.

15. WEATHERING
• Disintegration or decomposition of rocks is
known as weathering.

16. Different types of weathering
• Physical/mechanical weathering
• Chemical weathering
• Biological weathering

17. PHYSICAL WEATHERING
• The expansion of contraction of minerals due
to the variations in temperature results in
weathering.

18. CHEMICAL WEATHERING
• Oxygen, carbon dioxide, water etc. react with
the minerals and results in the chemical
decomposition of rocks

19. BIOLOGICAL WEATHERING
• The plant roots penetrating into the fissures in
rocks, burrowing of animals, and the
decomposition of plant and animal remains
lead to weathering.

20. Earth’s interior has a layered structure.
Each of the earth’s layers has unique features
On the basis of the mode of formation, rocks
can be classified into igneous, sedimentary,
and metamorphic
The process of physical disintegration and
chemical rocks on the crust is called
weathering