Download Volcanoes * Ch. 6 Review for Test

Volcanoes –
Ch. 6 Review
for Test
Volcanoes
 What’s
the
difference
between magma
and lava?
 There are two
areas that
volcanoes occur.
What are they?
 Magma
is still in the
ground and lava is
outside of the
volcano
 Plate boundaries
such as the “Ring
of Fire” and
hotspots, such as
the Hawaiian
Islands.
Volcanoes
 The
stages of the life of
a volcano are ______,
_______, and ________.
 A high amount of silica
in magma causes what
type of eruption?
 A low amount of silica?
 Active,
extinct
dormant,
 Explosive,
AKA
pyroclastic flow
A
quiet eruption
Volcanoes
 The
bowl shaped
area at the top of
a volcano is called
a ____________.
 The huge hole left
by the collapse of
a volcanic
mountain is called
a ___________.
 Crater
 Caldera
Volcanoes
 Magma
can
harden under
ground and make
these landforms:
 Lava and ash
combine to make
these landforms:
 Volcanic
necks,
sills, dikes, and
batholiths
 Shield,
cinder cone
and composite
volcanoes, and
lava plateaus
Volcanoes
 What
are the three
types of volcanoes
that we studied?
Give a description
of each type in
terms of shape,
types of eruptions,
and what they are
made of.



Shield – gently
sloping, quiet, lava
Cinder cone –
steep/tall, explosive,
ash, cinders bombs
Composite –
Medium/conical,
quiet and explosive,
lava, ash, cinders
and bombs
Volcanoes
 What
are the
main parts of a
volcano?
 Volcanic rock is
called ___________
rock
 Two types of
igneous rocks are:
 Magma
chamber, pipe,
vent, side vent, crater,
ash cloud, lava flow
 Igneous
 Pumice
and obsidian
Volcanoes
 Large
groups of
volcanoes are in
the Ring of Fire.
The islands of
Japan, Indonesia,
New Zealand, the
Philippines, and the
Aleutians are all
___________.
 Island
Arcs
Volcanoes
 What
is a basin?
 Where
is the huge
basin of California
located?
A
broad, bowl
shaped valley.
 Between
the Sierra
and Coast Ranges
of mountains