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.

MantleTectonic

plates

Crust• The crust is uneven.

• Some become continents and some become oceans.

A

G

F

B

E

DC

2 1

4

3

1

Crust

Continents Ocean

A: Asia

B: Europe

C: Australia

D: Africa

E: Antarctica

F: North America

G:South America

1. Pacific Ocean

2. Atlantic Ocean

3. Indian Ocean

4. Arctic Ocean

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.

• have fire drills.

• Build buildings which can minimize the bad effects of earthquake.