Transcript Volcano Vocabulary

Volcano Vocabulary
F3 7th grade
Volcano
A weak spot in the crust
where magma has
come to the surface
Volcano
Volcano
Volcanoes are what
formed the Hawaiian
Islands.
Magma
The molten mixture of
rock-forming
substances, gases,
and water from the
mantle
Magma
Magma
Magma
Magma is found
inside the
volcano.
Lava
Liquid magma that
reaches the surface;
also the rock formed
when liquid lava
hardens
Lava
Lava
Lava is found
outside the
volcano.
Element
A substance that
cannot be broken
down into other
substances
Element
Element
Basalt is made up of
the elements silicon
and oxygen.
Compound
A substance in which
two or more
elements are
chemically joined
Compound
Compound
SiO2 is the
compound formula
for Silicon dioxide.
Cinder cone
A steep cone-shaped hill or
small mountain made of
volcanic ash, cinders, and
bombs piled up around a
volcano’s opening
Cinder cone
Cinder cone
A cinder cone volcano
has a steep, coneshaped hill or small
mountain.
Shield Volcano
A wide, gently sloping
mountain made of
layers of lava and
formed by quiet
eruptions
Shield Volcano
Shield Volcano
Shield volcanoes rose
from a hot spot on the
ocean floor to create
the Hawaiian Islands.
Composite Volcano
A tall, cone-shaped
mountain in which layers
of lava alternate with
layers of ash and other
volcanic materials
Composite Volcano
Composite Volcano
Mount St. Helens in
Washington State is
an example of a
composite volcano.
Pipe
A long tube through which
magma moves from the
magma chamber to
Earth’s surface
Pipe
Pipe
Pipe
The pipe connects
the magma to the
vent.
Vent
The opening through
which molten rock
and gas leave a
volcano
Vent
Vent
Most often the vent is at
the top of the volcano
but sometimes there
can be side vents.