This document provides information about volcanoes, including what they are, the different types, how they form and erupt, examples of specific volcanoes, and the impacts of eruptions. It discusses how volcanoes are categorized as active, dormant or extinct based on recent eruption activity. Shield volcanoes slowly release lava to form broad slopes, while cinder cones explosively eject ash and rock to form steep cones. Composite cones can erupt both explosively and effusively. Mount St. Helens last erupted in 1980.

1. Volcanoes
• What is a Volcano?
• Inside a Volcano
• 5 types of Volcanoes
• Elements of Eruptions
• Eruptions around the
world
• Volcanic Aftermath

2. What is a volcano?
• A) The highest peak
in a mountain range.
• B) A flat surface on
the earth’s crust.
• C) A character on Star
Trek.
• D) A thin spot or
fissure in the earth’s
crust.

3. Why do volcanoes erupt?
Hot, melted rock
(magma) deep within
the earth becomes
lighter as it heats up.
Because it is lighter
than solid rock it rises
until it pushes to the
surface of the earth. A
volcanic eruption
occurs!

4. Melted rock that erupts from a
volcano is called . . .
• A) magma
• B) lava
• C) glupacose
• D) molten rock

5. Where do volcanoes erupt?
• A) In the middle of
the earth’s plates,
hotspots.
• B) Near the edges of
the earth’s plates.
• C) Subduction and rift
zones.
• D) All of the above.

6. Why do volcanoes grow?
• A) Repeated eruptions
• B) There are various
types of volcanoes and
each forms differently
• C) Volcanoes were
formed when the earth
was formed and haven’t
changed much since then.
• D) Both A and B

7. What are the 3 main shapes of
volcanoes?
• A) Dome, Funnel, and
crater
• B) Shield, Cinder, and
Composite
• C) Volcanic, Tephra,
and Slope
• D) Hydrosphere,
Cryosphere, and
Lithosphere

8. A shield volcano is formed when
A) Great masses of lava
slowly ooze out from an
opening in the earth’s
crust, forming a broad,
gentle slope.*
B) Lava, huge rocks,
cinders and ash explode
high into the air forming
a steep cone up to 35
degrees.
C) Formed by quiet and
explosive eruptions.
D) Concave formation in
the earth’s crust.

9. A cinder cone is formed when
A) Great masses of lava
slowly ooze out from an
opening in the earth’s
crust, forming a broad,
gentle slope.
B) Lava, huge rocks,
cinders and ash explode
high into the air forming
a steep cone up to 35
degrees.*
C) Formed by quiet and
explosive eruptions.
D) Concave formation in
the earth’s crust.

10. A composite cone forms when
A) Great masses of lava
slowly ooze out from an
opening in the earth’s
crust, forming a broad,
gentle slope.
B) Lava, huge rocks,
cinders and ash explode
high into the air forming
a steep cone up to 35
degrees.
C) Formed by quiet and
explosive eruptions. *
D) Concave formation in
the earth’s crust.

11. The following shows what shape
of volcano?
• A) Shield
• B) Cinder*
• C) composite
• D) Dome

12. The following shows what shape
of volcano?
• A) Shield
• B) Cinder
• C) composite*
• D) Dome

13. The following shows what shape
of volcano?
• A) Shield*
• B) Cinder
• C) composite
• D) Dome

14. Mt. Loa and Kilauea are
examples of what volcano shape?
A) Cinder
B) Composite
C) Funnel
D) Shield

15. Cinder cone volcanoes can reach
an altitude of
A) 45,000 feet
B) 15,000 feet
C) 3,000 feet
D) 20,000 feet

16. Mt. Pelee on the island of
Martinique is which volcano
shape?
A) Composite
B) Funnel
C) Cinder cone
D) Shield

17. Mt. Vesuvius, Mt. Fujiyama, and
Mt. Rainer are what volcano
shape?
A) Cinder
B) Composite
C) Funnel
D) Shield

18. Volcanoes are divided into 3
types
A) Composite, shield,
and Cinder
B) Funnel, Composite,
and Cinder
C) Active, Extinct, and
Dormant
D) Crater, Funnel, Slope

19. These Volcanoes have erupted in
recent history.
A) Dormant
B) Extinct
C) Active
D) Explosive

20. These volcanoes haven’t erupted
in recorded history and show no
signs of ever erupting.
A) Dormant
B) Extinct
C) Active
D) Explosive

21. Dormant volcanoes
A) No activity recorded in
history.
B) Have erupted in recent
history.
C) Currently erupting.
D) Show signs of activity,
but have not erupted in
recent history. It is
“sleeping.”

22. The destruction from a volcanic
eruption is caused by
• A) Lava and Tephra
• B) Ash and Gases in
the air
• C) Water, Rock and
Mud
• D) all of the above

23. Which of the following is an
active volcano in North America?
A) Mt. Vesuvius
B) Mt. Hood
C) Mt. Rainer
D) Mt. Katmai

24. Which of the following
volcanoes is extinct?
A) Mt. Hood
B) Mauna Loa
C) Mt. Kilamajaro
D) Both A and C

25. Which of the following
volcanoes has been dormant or
sleeping?
A) Paricutin
B) Mt. Timpanogos
C) Mt. Hood
D) Squaw Peak

26. Mt. Vesuvius destroyed what
city?
A) Salt Lake City
B) Cairo
C) Pompeii
D) Rome

27. What year did Mt. St. Helens last
erupt?
A) 1975
B) 1980
C) 1899
D) 1936