Volcanoes Question Preview (ID: 50356)


Study Guide Over Volcanoes. TEACHERS: click here for quick copy question ID numbers.

In which location would you most likely find volcanoes?
a) along mid-ocean ridges and where a plate is subducted
b) far from plate boundaries
c) along transform boundaries
d) where two continental plates collide

Before lava reaches the surface, the molten material is called
a) rock
b) magma
c) volcanic ash
d) liquid fire

What provides the force that causes magma to erupt to the surface?
a) the silica in the magma
b) dissolved gases trapped in the magma
c) gravity in the lithosphere
d) the density of the magma

If geologists detect many small earthquakes in the area near a volcano, what can they infer about the volcano?
a) It is dormant
b) It is probably about to erupt
c) It is extinct
d) It is a good source of geothermal energy.

Tall, cone shaped mountains in which layers of lava alternate with layers of ash are called?
a) shield volcanoes
b) cinder cone volcanoes
c) composite volcanoes
d) lava plateaus

When many layers of thin, runny lava build up a high, level area, the result is a
a) lava plateau
b) shield volcano
c) cinder cone volcano
d) composite volcano

The huge hole left by the collapse of a volcanic mountain is called a
a) lavaa plateau
b) caldera
c) cinder cone
d) shield volcano

When magma hardens in a volcano's pipe, the result will eventually be a landform called a
a) batholith
b) dike
c) volcanic neck
d) sill

A major volcanic belt known as the ______ circles the Pacific Ocean
a) Orians Belt
b) Circle of Life
c) Ring of Fire
d) Ring of Ice

The bowl-shaped area around a volcano's central vent is called a(n)
a) sill
b) crater
c) batholith
d) dike

Sometimes rising magma is blocked by horizontal layers of rock. The magma forces the layers of rock to bend upward into a landform called a(n)
a) volcanic neck
b) crater
c) dome mountain
d) sill

A mass of rock that forms when a large body of magma cools inside the crust is called a(n)
a) batholith
b) sill
c) dike
d) crater

A string of islands known as a(n) _______ can form from the collision of two oceanic plates.
a) island arc
b) mountain arc
c) Ring of Fire
d) Pacific islands

Volcanoes that form along a mid-ocean ridge occur at a(n) __________
a) divergent plate boundary
b) tension
c) transition plate boundary
d) compression

A pyroclastic flow typically occurs during a(n) _______ eruption
a) quite
b) explosive
c) extinct
d) dormant

A(n) _____ volcano is erupting or may erupt in the near future
a) active
b) dormant
c) extinct
d) quiet

Ash, cinders, and bomb build up in a steep pile to form ______ volcanoes
a) Shield
b) Cinder Cone
c) Composite
d) Active

A ______ forms when magma forces itself between rock layers and hardens
a) dike
b) batholith
c) sill
d) caldera

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