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Science 9 Chapter 10

Science 9 Chapter 10 Practice Test - Volcanoes and Other Igneous Activity
 
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Science 9 Chapter 10 Practice Test - Volcanoes and Other Igneous Activity

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Which type of volcano would be the least explosive?
a.
cinder cone
c.
shield volcano
b.
stratovolcano
d.
composite cone
 

 2. 

What energy resource is made possible by the volcanic activity in California?
a.
hydroelectricity
c.
geothermal energy
b.
nuclear power
d.
solar energy
 

 3. 

The Long Valley Caldera in east-central California was formed by a massive volcanic eruption about 760,000 years ago. Since then, it has erupted several times. Of the following, which would be least likely to indicate that another eruption will soon occur?
a.
recurring earthquakes in the vicinity
b.
decreases in precipitation in the area
c.
changes in gas emissions from the caldera
d.
uplifting of the floor of the caldera
 

 4. 

A magma’s viscosity is directly related to its ____.
a.
depth
c.
color
b.
age
d.
silica content
 

 5. 

Which of the following factors helps determine whether a volcanic eruption will be violent or relatively quiet?
a.
amount of dissolved gases in the magma
b.
temperature of the magma
c.
composition of the magma
d.
all of the above
 

 6. 

As the temperature of lava increases, ____.
a.
its viscosity decreases
c.
its viscosity increases
b.
it begins to harden
d.
it can flow a much shorter distance
 

 7. 

Which list places the magma types in order of decreasing viscosity (most viscous listed first)?
a.
basaltic, andesitic, rhyolitic
c.
andesitic, basaltic, rhyolitic
b.
rhyolitic, andesitic, basaltic
d.
basaltic, rhyolitic, andesitic
 

 8. 

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
 

 9. 

The particles produced in volcanic eruptions are called ____.
a.
laccoliths
c.
pyroclastic material
b.
calderas
d.
volcanic stocks
 

 10. 

Large particles of hardened lava ejected from a volcano are called ____.
a.
lapilli
c.
blocks
b.
cinders
d.
bombs
 

 11. 

What is the most abundant gas associated with volcanic activity?
a.
chlorine
c.
sulfur oxide
b.
water vapor
d.
carbon dioxide
 

 12. 

What type of volcano is built almost entirely from ejected lava fragments?
a.
cinder cone
c.
shield volcano
b.
composite cone
d.
pahoehoe volcano
 

 13. 

The broad, slightly dome-shaped volcanoes of Hawaii are ____.
a.
composite cone volcanoes
c.
pyroclastic volcanoes
b.
shield volcanoes
d.
cinder cone volcanoes
 

 14. 

A volcano that is fairly symmetrical and has both layers of lava and pyroclastic deposits is a ____.
a.
cinder cone volcano
c.
pyroclastic volcano
b.
shield volcano
d.
composite cone volcano
 
 
nar001-1.jpg
 

 15. 

What feature is labeled D in Figure 10-1?
a.
pipe
c.
crater
b.
volcanic neck
d.
lava flow
 

 16. 

What feature is labeled A in Figure 10-1?
a.
pipe
c.
crater
b.
volcanic neck
d.
vent
 

 17. 

What type of volcano is illustrated in Figure 10-1?
a.
volcanic neck
c.
cinder cone
b.
shield volcano
d.
composite cone
 

 18. 

Which of the following plays a major part in determining the form of a volcano?
a.
elevation above sea level
c.
magma composition
b.
local soil type
d.
nearness of other volcanoes
 

 19. 

Which of the following is true about cinder cones?
a.
They have very steep sides.
b.
They are usually less than 300 meters high.
c.
They often occur in groups.
d.
all of the above
 

 20. 

The most violent volcanic eruptions are associated with what type of volcano?
a.
cinder cones
c.
composite cones
b.
shield volcanoes
d.
fissure eruptions
 

 21. 

A caldera is a ____.
a.
violent volcanic explosion
c.
large depression in a volcano
b.
type of volcano
d.
very large volcanic bomb
 

 22. 

Lava plateaus form when ____.
a.
the top of a volcano collapses
b.
fluid basaltic lava flows out of fissures
c.
lahars create new landforms
d.
pyroclastic flows erupt from volcanoes
 

 23. 

The volcanic landform that is formed when the more resistant volcanic pipe remains after most of the cone has been eroded is called a ____.
a.
lahar
c.
volcanic vent
b.
caldera
d.
volcanic neck
 

 24. 

The greatest volume of volcanic material is produced by ____.
a.
cinder cones
c.
shield volcanoes
b.
fissure eruptions
d.
composite cones
 

 25. 

In general, an increase in the confining pressure results in what change in a rock’s melting temperature?
a.
Melting temperature stays the same.
b.
Melting temperature decreases.
c.
Melting temperature increases.
d.
Melting temperature is not related to confining pressure.
 

 26. 

Which of the following factors affects the melting point of rock?
a.
composition of the material
c.
confining pressure
b.
water content
d.
all of the above
 

 27. 

Which of the following is responsible for the partial melting of rock beneath ocean ridges?
a.
chemical reactions with atmospheric oxygen
b.
increases in pressure
c.
decreases in pressure
d.
increases in temperature
 

 28. 

Magma tends to rise towards Earth’s surface primarily because ____.
a.
water is abundant in magma
b.
rocks become less dense when they melt
c.
silica is abundant in magma
d.
rocks become more dense when they melt
 

 29. 

The volcanic landforms at divergent ocean plate boundaries are ____.
a.
oceanic ridges
c.
continental volcanic arcs
b.
volcanic island arcs
d.
ocean trenches
 

 30. 

Most of the active volcanoes on Earth are located in a belt known as the ____.
a.
circum-Atlantic belt
c.
Ring of Lava
b.
Ring of Fire
d.
East African Rift Valley
 
 
nar002-1.jpg
 

 31. 

What volcanic feature is illustrated at A in Figure 10-2?
a.
continental volcanic arc
c.
hot spot
b.
volcanic island arc
d.
ocean ridge
 

 32. 

What type of plate boundary resulted in the volcanic activity illustrated in Figure 10-2?
a.
divergent plate boundary
b.
oceanic-oceanic convergent plate boundary
c.
oceanic-continental convergent plate boundary
d.
continental-continental convergent plate boundary
 

 33. 

Which type of landform develops at plate boundaries where one oceanic plate descends beneath another?
a.
rift valley
b.
volcanic island arc
c.
mountain ranges formed by a batholith
d.
lava plateau
 

 34. 

Most intraplate volcanic activity occurs where ____.
a.
oceanic plates diverge
b.
hot magma descends into the mantle under a plate
c.
hot mantle plumes rise toward the surface within a plate
d.
oceanic and continental plates converge
 

 35. 

The Hawaiian Islands are associated with what type of volcanism?
a.
intraplate volcanism
b.
subduction zone volcanism
c.
volcanism at a divergent plate boundary
d.
volcanism at a convergent plate boundary
 



 
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