POWER POINT PRESENTATION

1. WELCOME

2. Name : ANEEJA R. D.
Register No. : 169/13376002
Name of College : New B.Ed. College
Nellimoodu

3. TOPIC : VOLCANOES

4. VOLCANOES ARE CAUSED WHEN
MOLTEN ROCK (MAGMA) FLOWS
OUT INTO THE EARTHS SURFACE
THROUGH FISSURES THAT ARE
CAUSED DUE TO THE MOVEMENT
OF PLATES.

5. VENT
THE FISSURES, THROUGH
WHICH THE MAGMA
COMES OUT FROM THE
AESTHENOSPHERE ON TO
THE CRUST OF THE
EARTH.

6. CRATER
THE FUNNEL SHAPED
DEPRESSION THAT CAN
BE SEEN ON THE SUMMIT
OF AVOLCANOE

7. BASED ON THE CHANGES OF
ERUPTION THE VOLCANOES
ARE CLASSIFIED INTO THREE
1. ACTIVE
2. EXTINCT
3. DORMANT

8. ACTIVE
THOSE THAT FREQUENTLY
CRUPT. EG. MOUNT ETNA IN
ITALY, MOUNT, FUJIYAMA IN
JAPAN

9. EXTINCT
ACTIVE AT A TIME BUT WILL
NOT ERUPT AGAIN EG.
KILMANJARO IN AFRICA

10. DORMANT
THOSE THAT HAVE ERUPTED
EARLIER AND NOT ACTIVE IN THE
RECENT PAST. BUT CAN BECOME
ACTIVE.
Eg. VESUVIUS IN ITALY

11. THANK YOU