Chapter 6 Review
VOLCANOES
Volcanoes
 The three stages in the
life of a volcano are:
 Make sure you can
describe each stage of a
volcano’s life cycle
 The three main types of
volcanoes are:
 Make sure that you
know the differences
between these types of
volcanoes and can
describe them.
 Active, dormant, and
extinct
 Shield, composite, and
cinder cone
Volcanoes
 Volcanoes can have two
main types of
eruptions. They are
__________ and
____________.
 What causes an
eruption to be either
quiet of explosive?
 Another name for an
explosive eruption is a
 Quiet and explosive
 The amount of silica in the
magma – high is silica
make explosive eruptions
and low in silica makes
quiet eruptions
 Pyroclastic flow
Volcanoes
 The major volcanic belt that
surrounds the Pacific Ocean
is called the
____________
 What is the difference
between magma and lava?
 A weak spot in the crust
where molten material
called magma reaches the
surface is called a _______
 Ring of Fire
 Magma is inside the Earth,
lava is on the surface.
 Volcano
Ring of Fire
Volcanoes
 Due to subduction, a chain
 Island arc
of volcanic mountains may
rise to the surface of the
ocean resulting in a string of
islands called an
_______________
 Some islands form the way
that the Hawaiian islands
formed over a crack far from
a plate boundary. These
areas are called
______________.
 Examples are Japan, New
Zealand, The Philippines,
the Aleutians and others
 Hot Spots
Volcanoes
 Name the parts of a
volcano
 Magma chamber, pipe,
vent, side vent, crater,
lava flow, ash cloud
 Make sure that you
know where they would
fit on this diagram.
Volcanoes
 What is the name for the
 A geyser
fountain of water and
steam that erupts from the
ground due to heating
within the Earth?
 What is the word for an
old person, especially an
eccentric old man.
 A geezer
Volcanoes
 A huge hole left in the
 Caldera
ground by the collapse of
a volcanic mountain is
called a ___________.
 When magma hardens in
a volcano’s pipe and
eventually becomes
exposed due to erosion,
this landform is left
behind.
 A volcanic neck
Volcanoes
 Magma that forces itself
between or across rock
layers can form these
landforms.
 A huge mass of rock
formed by hardened,
cooled magma can help
form a mountain range
like a large portion the
Sierra Nevadas. It is
called a __________.
 Dikes and Sills
 Batholith
Volcanoes
 Thank you for watching this PowerPoint. Good luck
on the test.