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Multiple Choice, Fill-in-the-Blank, Short Answer
1) The outer boundary of the Pacific plate is nicknamed ______________________ because of
the number of Earthquakes and Volcanoes that occur there.
a) Ring of Fire
b) Ring of Champions
c) Lord of the Rings
d) Ring around the Rosie
2) ___________________ - mixture of hot gases, ash, cinders, and bombs that explode out of a
volcanic eruption.
a) Pryoclastic flow
b) Aa
c) Pyromaniac
d) Pahoehoe
3) ________________– Pressure builds in the magma chamber due to increases in magma and
expanding gases until it flows or explodes out of a vent.
a) Crater
b) Lava flow
c) Viscosity
d) Eruption
4) What is lava flow?
area covered by lava after eruption
5) A _______________ is a weak spot in the crust where molten material, or magma, comes to
the surface.
a) island
b) volcano
c) valley
d) rift
6) The Tube connecting the magma chamber to the Surface is called the ______________
a) central vent
b) pipe
c) shaft
d) side vent
7) What stage of the life cycle is a volcano in if it has not erupted in 100's of years but it may erupt
again without warning?
a) mid-life crisis
b) dormant
c) active
d) extinct
8) __________________ are Wide, gently sloping mountains with quiet Eruptions that gradually
build lava layers on the mountain walls
a) Lava Plateau
b) Cinder-Cone Volcano
c) Shield Volcano
d) Composite Volcano
9) How does Temperature effect the Viscosity of Magma?
high temp = low viscosity
10) A Fluids resistance to flow is called ____________
a) viscosity
b) temperature
c) visualization
d) silica
11) _______________ is easy flowing, quiet erupting lava with High Temperature, Low Silica
content, Low Viscosity
12) The Bowl-shaped opening at the top of the volcano created by the eruption of the volcano is
called the ____________.
a) vent
b) pipe
c) crater
d) chamber
13) ________________________ are Larger, cone-shaped Mountains that Alternate between Quiet
and Explosive Eruptions
a) Cinder-Cone Volcano
b) Lava Plateau
c) Composite Volcano
d) Shield Volcano
14) The majority of Volcanoes on earth are located around the edge of which Tectonic Plate?
Pacific Plate
15) An Opening where magma leaves the volcano and turns to lava is called a
a) crater
b) vent
c) chamber
d) pipe
16) Magma with [low Silica content, [low Viscosity, and [high temperatures cause volcanoes to
have Quiet Eruptions.
17) ____________________ – Characteristics that can be observed using your senses or
measured with tools.
a) Physical Properties
b) Chemical Properties
c) Composition
d) Silica Content
18) ________________________ is Explosive Erupting lava with High Silica content, Low
Temperature, High Viscosity
a) Aa
b) Pahoehoe
c) Rhyolite
d) Patagonia
19) ________________________ are Steep, cone-shaped hills or mountains that erupt violently
spewing out of ash, cinders, and bombs
20) Magma with [high Silica content, [high Viscosity, and [low temperatures cause volcanoes to
have Explosive Eruptions.
21) The Pocket of Magma underneath the Volcano is called _____________
a) pipe
b) crater
c) magma chamber
d) central vent
22) Area where magma from deep within the mantle melts through thin oceanic crust and forms
islands is called a/n ____________________.
a) hot spot
b) mid-ocean ridge
c) convergent boundary
d) deep ocean trench
23) What stage of the life cycle is a volcano in if it is Erupting or showing signs that it may erupt?
a) dormant
b) active
c) extinct
d) finding itself
24) _________________ is a term that means what something is made of. It is a chemical property.
a) Viscosity
b) Observation
c) Composition
d) Compound
25) Which type of plate boundary forms long, quiet erupting volcanoes called Mid-Ocean Ridges?
a) Divergent
b) Ring of Fire
c) Transform
d) Convergent
26) ________________ form when an Oceanic plate collides with a Continental plate and causes
the most violent Volcanoes.
a) Lava plateaus
b) Shield Volcanoes
c) Subduction Zones
d) Mid-Ocean Ridges
27) What are the 2 types of Vents? Describe each.
Side and Central