This document discusses types of volcanic eruptions. It begins with an introduction that explains how volcanic activity occurs at the boundaries of tectonic plates and how plate movement influences the type of volcano formed. It then describes the two main types of eruptions as effusive, where lava flows out, or explosive, where fragmented lava is ejected along with ash and gases. The document proceeds to list and define specific eruption types like Hawaiian, Strombolian, Vulcanian, and Plinian eruptions. It concludes with an interesting fact about some famous historical eruptions and notes that the largest volcano in the solar system is Olympus Mons on Mars.

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.