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VOLCANO Review

Total questions: 48

Worksheet time: 58mins

Name
Class
Date
1.
If a volcano's magma is high in silica, the volcano will probably
a)
erupt quietly
b)
remain dormant
c)
erupt explosively
d)
produce dark color lava
2.
Highly explosive volcanoes tend to have what type of magma?
a)
magma with high silica, high viscosity, and higher gas content
b)
magma with low silica, low viscosity, and lower gas content
c)
magma with low silica, high viscosity, and lower gas content
d)
magma with no silica, high viscosity, and no gas content
3.
A  line of volcanic activity that surrounds the Pacific Ocean basin is the 
a)
Ring of Fire
b)
Aleutian Islands
c)
Hawaiian Islands
d)
Caribbean Islands
4.
What kind of volcano is made of alternating layers of lava and tephra? (also called strato volcano)
a)
shield
b)
composite
c)
cinder
5.
5. What are the most explosive types of volcanoes?
a)
Shield
b)
Composite
c)
Cinder Cone
6.
What is a determining factor in which type of eruption will occur?
a)
the composition of the magma
b)
the size of the mountain
c)
the climate around the volcano
d)
the number of people living near the volcano
7.
Which of the following factors helps determine whether a volcanic eruption will be violent or relatively quiet?
a)
amt of dissolved gases
b)
temp of magma
c)
composition of magma
d)
all of the above
8.
Which type of volcano has the widest base?
a)
Cinder
b)
Composite
c)
Shield
9.
What type of boundary is associated with the Ring of Fire
a)
Convergent
b)
Divergent
c)
Transform
10.
The solid particles thrown up in the air during a volcanic eruption are known as __.
a)
Tephra
b)
Pyroclastic flow
c)
Pillow lava
d)
Felsic lava
11.
The hot ash, gas and rock that races down the side of a volcano is known as ___
a)
Tephra
b)
Pyroclastic flow
c)
Lava Dome
d)
Lava Plateau
12.
The main hazard from a quiet volcanic eruption is 
a)
volcanic bombs
b)
lava flows
c)
volcanic cinders
d)
volcanic ash
13.
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
14.
Before lava reaches the surface it is called
a)
rock
b)
magma
c)
volcanic ash
d)
liquid fire
15.
The volcanoes along converging oceanic plate boundaries may form
a)
a hot spot
b)
a part of the mid-ocean ridge
c)
an island arc
d)
a subducting plate
16.
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
17.
What type of volcano is built almost entirely from ejected lava fragments (pyroclastic material)?
a)
cinder cone
b)
composite cone
c)
shield volcano
d)
pahoehoe volcano
18.
This type of volcano has MOSTLY NONEXPLOSIVE eruptions
a)
composite
b)
cinder cone
c)
shield
19.
What type of volcano is this?
a)
Composite Volcano
b)
Cinder Cone Volcano
c)
Shield Volcano
20.
What type of volcano is this?
a)
Composite Volcano
b)
Cinder Cone Volcano
c)
Shield Volcano
21.
How would you describe the magma below a volcano this?
a)
Thick and full of trapped gases
b)
Thick with no trapped gases
c)
Thin and Runny with lots of trapped gases
d)
Thin and Runny with no trapped gases
22.
The collapse of a volcano's magma chamber may produce a ___________?
a)
caldera
b)
crater
c)
batholith
d)
island arc
23.
Forms when small pieces of magma are ejected into the air then fall back to Earth and pile up around a vent
a)
Cinder Cone Volcano
b)
Composite Volcano
24.

Where are most volcanoes located

a)

Sliding Boundaries

b)

Spreading Boundaries

c)

Colliding Boundaries

d)

Both Spreading and Colliding/Subducting Boundaries

25.
What is the definition of dormant?
a)
sleeping
b)
extinct
c)
active
d)
invisible
26.
magma or igneous rock that is rich in magnesium and iron: dark in color
a)
Mafic
b)
Felsic
c)
Lava
d)
Marginal
27.
Which rock is underneath our oceans?
a)
Slate
b)
Granite
c)
Sandstone
d)
Basalt
28.

Hawaiian Islands are formed from this type of magma.

a)

mafic

b)

felsic

29.

Magma leaves a volcano through a....

a)

Sill

b)

Vent

c)

Chamber

d)

Crater

30.

Tall, cone-shaped mountains made of both cooled lava layers and layers of ash are called

a)

shield volcanoes

b)

composite volcanoes

c)

lava plateaus

d)

cinder cone volcanoes

31.

This is where the volcanic materials that erupt are stored

a)

Vent

b)

Conduit

c)

Side Vent

d)

Magma Chamber

32.

How fast a lava is able to flow is based on its

a)

Location

b)

Viscosity

c)

Amount

d)

Weight

33.

A common mafic lava flow?

a)

Blocky

b)

A'a

c)

Pahoehoe

d)

Lahar

34.

When volcanic ash mixes with water, it forms violent mudflows called ______________

a)

Rolling Ash

b)

Lapilli

c)

Ash Flood

d)

Lahar

35.

Chunks of magma that are cooled into rocks as they are thrown in the air are

a)

Volcanic bombs

b)

Pyroclastic Flow

c)

Lahars

d)

Blocks

36.
Lava that is very thick and blocky.
a)
Pahoehoe
b)
Caldera
c)
AA
d)
Pyroclastics
37.
Largest volcano type.
a)
Shield
b)
Composite
c)
Cinder Cone
d)
Hot Spots
38.
Deadly cloud of gas and ash that comes out of a volcano.
a)
pyroclastic flow
b)
Lahar
c)
mafic
d)
pahoehoe
39.
Used to measure the intensity of a volcanic eruption.
a)
Volcanic Explosive Index (VEI)
b)
Fujita Scale
c)
Volcano Intricate Speed Accuracy (VISA)
d)
Pyroclastic Flowometer
40.
Large area of high temperature magma located close to the earths surface...produces volcanic islands.
a)
induction zone
b)
Composite Volcano
c)
Pahoehoe
d)
Hot Spot
41.
These usually indicate the movement of lava under a volcano.
a)
hot spots
b)
earthquakes
c)
calderas
d)
pyroclastic flows
42.

Mt. Rainier is located on a...

a)

divergent boundary

b)

subduction zone

c)

transform fault

d)

goal boundary

43.

As one moves away from a hot spot, the crust will get :

a)

younger

b)

older

c)

the will be no change in age

44.

Which of the following will move with time ?

a)

a hot spot

b)

the plate the hot spot is over

c)

neither move

d)

both move

45.

The following are location or place where volcanoes can be occur except ____________________________.

a)

Along divergent plate boundaries such as oceanic ridges / spreading centers.

b)

In areas of transform boundary where two plates slides horizontally.

c)

Along converging plate boundaries where subduction occurs.

d)

In areas called “hotspots” that are usually located in the interior of plates away from plate margins.

46.
What is a determining factor in which type of eruption will occur?
a)
the chemistry of the magma
b)
the size of the mountain
c)
the climate around the volcano
d)
the number of people living near the volcano
47.

How do changes in a volcano's surface warn of an impending eruption? (Choose 2)

a)

Deformation can show magma and pressure rising to the surface

b)

Caving in near the crater shows that magma has moved toward the main vent

c)

Inflation can show magma close to the surface

d)

The crater sinking down shows that magma is moving to the side vents

48.

Rank the volcanic stages from LEAST likely to MOST likely to erupt.

a)

active, dormant, extinct

b)

extinct, dormant, active

c)

dormant, extinct, active

d)

dormant, active, extinct

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