What are Volcanoes?
Volcanoes look a lot like mountains but they are quite different.
A volcano is a mountain that opens downwards to storage of molten rock deep underneath the Earth’s surface. The top of a volcano opens up like a hole (or vent) where the molten lava rises through and reaches the earth’s surface. This is what we term as a Volcanic Eruption. (source: qknowbooks)
A volcanic eruption is the escaping of molten rock through a rupture in a mountain on to the Earth’s surface. Clouds of ash and lava are seen coming out of a Volcanic eruption.
Volcanic eruptions can completely clear out its surroundings.
There are 3 stages of volcano:
a. Active Volcano; recently erupted volcano which can erupt again.
b. Dormant Volcano; a volcano that has not been erupted in a long time but can erupt again
c. Extinct Volcano: one that erupted 100 or 1000 years ago and can never erupt again.
Why do volcano erupt?
Different Types of Volcano
a. Lava Volcanoes
b. Shield Volcanoes
c. Cinder Cones
d. Composite Volcano
Types of Volcanic Eruptions
a. Hawaiin Eruption
b. Vulcanian Eruption
Effects of Volcanic Eruption
Some negative effects are;
Some Positive effects are;