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Transcript 
The Earth contains 3 layers
Crust
Magma (upper &
lower mantle)
Core
Crust
• The Earth is divided into 9 large plates and
several smaller ones.
• These plates are called tectonic plates.
• These plates are not fixed, they float on
top of mantle.
Mantle
Tectonic
plates
Crust
• The crust is uneven.
• Some become continents and some become oceans.
4
A
B
G
2
1
1
D
3
F
C
E
Crust
Continents
Ocean
A: Asia
1. Pacific Ocean
B: Europe
2. Atlantic Ocean
C: Australia
3. Indian Ocean
D: Africa
4. Arctic Ocean
E: Antarctica
F: North America
G:South America
Movement of Tectonic Plates
(earthquakes)
What are the natural
phenomena in an earthquake?
Volcanic eruption
Crater (lake)
Tidal wave
What are the bad effects of an
earthquake?
Buildings and bridges were collapsed
Fire
People were killed
What can we do?
• Scientists collect data about earthquakes.
• Build buildings which can minimize the bad effects
of earthquake.
• have fire drills.
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