Download Volcanoes Power Point File

Volcanoes
An Introduction to Volcanoes Video
The Wax Volcano (Teacher Demo)
Earthquakes and volcanoes in the subduction zone.
Eg as the Pacific Plate goes under the Indo-Australian Plate. The earthquakes follow
the line of the plate going down.
A deep ocean
trench lies to the
east of the North
Island.
The trench shows that in the North Island the Pacific Plate is diving
beneath the Indo-Australian Plate, creating the North Island volcanoes.
Rotorua
Taupo
White Island
Taranaki
Ruapehu
A whole line of volcanoes follows the subduction zone, including many
under-sea volcanoes.
What is a
Volcano?
• A volcano is an opening in
the earth’s crust out of
which magma, gases and
solid material escape.
• The material coming out
of a volcano comes from
deep inside Earth, usually
the mantle.
Where are Volcanoes
Found?
• Around the Pacific
Ocean is a ring of
~200 active
volcanoes.
• This area is called the
Ring of Fire.
Where are Volcanoes Found?
• Most volcanoes occur on plate
boundaries.
• Some volcanoes also occur over hotspots.
• A hotspot is a spot inside the mantle that
heats areas of the plate above it.
Volcanoes On Boundaries
Volcanoes On Hotspots