1. INTEGRATED PROJECT
Science
Volcanic Eruptions

2. IN THIS PPT WE WILL SEE
 INTRODUCTION [HOW DOES VOLCANIC
ERUPTIONS OCCUR]
 TYPES OF VOLCANIC ERUPTIONS
 SOME IMAGES OF TYPES OF VOLCANIC
ERUPTIONS
 PREDICTING ERUPTIONS
 AMAZING FACTS

3. INTRODUCTION
 What causes Volcanos? OR How does it
occurs?
 Volcanic activity frequently occurs at the
boundaries of the Earth's tectonic plates
which are a series of large blocks moving
between each other. The movement of these
plates plays a significant role in the type of
volcano formed, which influences its shape.

5. TYPES OF VOLCANIC
ERUPTIONS The most common type of volcanic eruption occurs
when magma (the term for lava when it is below the
Earth's surface) is released from a volcanic vent.
 Eruptions can be effusive, where lava flows like a
thick, sticky liquid, or explosive, where fragmented
lava explodes out of a vent.
 In explosive eruptions, the fragmented rock may
be accompanied by ash and gases; in effusive
eruptions, degassing is common but ash is usually

6. SOME OTHER KINDS OF
VOLCANIC ERUPTIONS ARE -
Hawaiian Eruption
Strombolian Eruption
Vulcanian Eruption
Plinian Eruption
Lava Domes
Surtseyan Eruption

9. AMAZING FACT
 Some famous volcanic eruptions of modern
times include Mount Krakatoa in 1883,
Novarupta in 1912, Mount St Helens in 1980
and Mt Pinatubo in 1991.
 While we certainly have some big volcanoes
here on Earth, the biggest known volcano in our
solar system is actually on Mars. Its name is
Olympus Mons and it measures a whooping
600km (373 miles) wide and 21km (13 miles)
high.