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WorksheetsVolcanoes Review
Total questions: 34
Worksheet time: 17mins
Name
Class
Date
1.
A magma's viscosity is directly related to its ____________.
a)
depth
b)
age
c)
color
d)
silica content
2.
Which factors influence whether an eruption will be violent or relatively quiet? (Check all that apply)
a)
amount of dissolved gases
b)
temperature
c)
composition (what it is made of)
d)
what country is nearby
3.
As the temperature of lava increases, ______________.
a)
the viscosity decreases
b)
it begins to harden
c)
its viscosity increases
d)
it can flow a much shorter distance
4.
The volcanoes with gentle slopes and quiet eruptions in Hawaii are what type of volcano?
a)
Cinder Cone
b)
Sheild
c)
Composite (Stratovolcano)
5.
Highly explosive volcanoes usually have magma that has ________, ________, ________. (Check all that apply)
a)
high silica
b)
high viscosity
c)
high gas content
d)
low silica
e)
low viscosity
6.
A caldera is _______________.
a)
an explosion
b)
a large depression that forms when the ground above an empty magma chamber collapses
c)
a type of volcano
d)
an island
7.
The farther away you get from a mid-ocean ridge, the age of the rock _________.
a)
increases
b)
decreases
c)
stays the same
d)
is unpredictable
8.
The seafloor spreads along underwater mountain ranges called _______________.
a)
craters
b)
mid-ocean ridges
c)
trenches
d)
continents
9.
A mid ocean ridge happens at what type of plate boundary?
a)
convergent
b)
divergent
c)
transform
10.
The Hawaiian islands were created when the Pacific Plate moved over ______________.
a)
a subduction zone
b)
a hotspot
c)
the Aleutian plate
d)
an ocean ridge
11.
A substance's viscosity is ______________.
a)
the ability for a substance to become rock
b)
the ability for a substance to flow
c)
the hardness of rock
d)
a type of lava
12.
The most common types of gases found in magma are: (check 2)
a)
Water
b)
Ethylene
c)
Boron
d)
Carbon dioxide
13.
_________________ are particles made in volcanic eruptions that are classified by size, such as volcanic ash, dust, lapilli.
a)
calderas
b)
craters
c)
pyroclastic material
d)
the Easter Bunny's eggs
14.
What type of volcano is shown in the picture?
a)
shield volcano
b)
cinder cone volcano
c)
composite volcano (stratovolcano)
15.
Paleomagnetism means ________________. (Hint: think about the labs you did this week)
a)
new magnetism
b)
dinosaur fossils
c)
a diet where you eat magnets
d)
ancient magnetism
16.
The most explosive volcanic eruptions come from the ______________ type of volcano.
a)
sheild
b)
composite or stratovolcano
c)
cinder cone volcano
17.
The type of boundary where plate boundary where plate move apart and magma comes up from the mantle to create new seafloor is called a(n)__________________ plate boundary.
a)
Convergent
b)
Divergent
c)
Transform
18.
How many times did the magnetic field reverse polarity between a and d?
a)
2
b)
3
c)
4
d)
5
19.
Which process is shown in letter C?
a)
seafloor spreading
b)
rifting
c)
subduction
20.
Which layer of the earth is shown in letter D?
a)
Mantle
b)
Lithosphere
c)
Core
21.
Each ocean at locations A (Pacific Ocean) and B (Atlantic Ocean) have been spreading for the same amount of time. Which ocean is spreading faster?
a)
A (Pacific Ocean)
b)
B (Atlantic Ocean)
22.
As the temperature of lava decreases, ______________.
a)
the viscosity decreases
b)
it begins to melt
c)
its viscosity increases
d)
it can flow a much shorter distance
23.
Volcanoes that are not explosive usually have magma that has ________, ________, ________. (Check all that apply)
a)
low silica
b)
low viscosity
c)
low gas content
d)
high silica
e)
high viscosity
24.
The closer you get to a mid-ocean ridge, the age of the rock _________.
a)
increases
b)
decreases
c)
stays the same
d)
is unpredictable
25.
What type of volcano is shown in the picture?
a)
shield volcano
b)
cinder cone volcano
c)
composite volcano (stratovolcano)
26.
The least explosive volcanic eruptions come from the ______________ type of volcano.
a)
sheild
b)
composite or stratovolcano
c)
cinder cone volcano
27.
How many times did the magnetic field reverse polarity between d and f?
a)
2
b)
3
c)
4
d)
5
28.
Which feature is shown in letter A?
a)
seafloor spreading
b)
mid ocean ridge
c)
subduction
29.
Which feature of the earth is shown in letter A?
a)
Island
b)
canyon
c)
volcanic arc
30.
Each ocean at locations A (Pacific Ocean) and B (Atlantic Ocean) have been spreading for the same amount of time. Which ocean is spreading slower?
a)
A (Pacific Ocean)
b)
B (Atlantic Ocean)
31.
What is the feature located at letter A?
a)
magma chamber
b)
ash cloud
c)
main vent
d)
crater
32.
What is the feature located at letter B?
a)
magma chamber
b)
ash cloud
c)
main vent
d)
crater
33.
What is the feature located at letter C?
a)
magma chamber
b)
ash cloud
c)
main vent
d)
crater
34.
What is the feature located at letter D?
a)
magma chamber
b)
ash cloud
c)
main vent
d)
crater
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