Volcano Vocabulary
F3 7th grade
VolcanoVolcanoA weak spot in the crust where magma
has come to the surface
VolcanoVolcanoVolcanoes are what formed the Hawaiian
Islands.
MagmaMagmaThe molten mixture of
rock-forming substances, gases, and water from the mantle
MagmaMagmaMagma is found
inside the volcano.
LavaLavaLiquid magma that reaches the surface; also the rock formed
when liquid lava hardens
LavaLavaLava is found
outside the volcano.
ElementElementA substance that cannot be broken down into other
substances
ElementElementBasalt is made up of the elements silicon
and oxygen.
CompoundCompoundA substance in which
two or more elements are
chemically joined
CompoundCompoundSiO2 is the
compound formula for Silicon dioxide.
Cinder coneCinder coneA steep cone-shaped hill or
small mountain made of volcanic ash, cinders, and bombs piled up around a
volcano’s opening
Cinder coneCinder cone
Cinder coneCinder coneA cinder cone volcano
has a steep, cone-shaped hill or small
mountain.
Shield VolcanoShield VolcanoA wide, gently sloping
mountain made of layers of lava and formed by
quiet eruptions
Shield VolcanoShield Volcano
Shield VolcanoShield VolcanoShield volcanoes rose from a hot spot on the ocean floor to create the Hawaiian Islands.
Composite VolcanoComposite Volcano
A tall, cone-shaped mountain in which layers
of lava alternate with layers of ash and other
volcanic materials
Composite VolcanoComposite Volcano
Composite VolcanoComposite Volcano
Mount St. Helens in Washington State is
an example of a composite volcano.
PipePipeA long tube through which
magma moves from the magma chamber to
Earth’s surface
PipePipeThe pipe connects the magma to the
vent.
VentVentThe opening through
which molten rock and gas leave a
volcano
VentVentMost often the vent is at
the top of the volcano but sometimes there can be side vents.