Dr. Houghton – Volcano Vocabulary, Dantes Peak and National Geographic video quiz
Please use the space provided on the answer sheet to answer all questions.
Section I. Volcano vocabulary - Matching (2 points each)
A. Composite Volcano
B. Pyroclastic
C. Shield Volcano
D. Viscosity
E. Vent
F. Crater
G. Cinder cone
H. Caldera
I. Volcano
J. Active volcano
K. Ash
L. Ashfall
M. Basalts
N. Lava
O. Lava fountain
P. Magma
Q. Silica
R. Tuff
S. Lava Flow
1. ______A steep walled depression at the summit of many volcanoes
2. ______A steep volcanic cone built by both lava flows and pyroclastic eruptions.
3. ______ A volcano that is erupting. Also, a volcano that is not presently erupting, but that has
erupted within historical time and is considered likely to do so in the future.
4. ______Fine particles of pulverized rock blown from an explosion vent. Measuring less than
1/10 inch in diameter, ash may be either solid or molten when first erupted. By far the most
common variety is vitric ash (glassy particles formed by gas bubbles bursting through liquid
magma).
5. ______A large depression in a volcano formed by the collapse of the top of a composite
volcano after an explosive eruption or from the collapse of a the top of a shield volcano after
the magma chamber is drained.
6. ______ A rhythmic vertical fountainlike eruption of lava.
7. ______These are the product of one single eruption lasting a short period of time. They are
formed by ejected lava fragments that harden in the air. The magma in the chamber
solidifies and the volcano never erupts again.
8. ______ Molten rock beneath the surface of the earth.
9. ______A gently sloping volcano in the shape of a flattened dome and built almost
exclusively of lava flows
10. ______A substance’s resistance to flow
11. ______ An outpouring of lava onto the land surface from a vent or fissure. Also, a solidified
tongue like or sheet-like body formed by outpouring lava.
12. ______Fragmented (clastic) rock material formed by a volcanic explosion or ejection from a
volcanic vent.
13. ______ Volcanic ash that has fallen through the air from an eruption cloud. A deposit so
formed is usually well sorted and layered.
14. ______ Magma that has reached the surface through a volcanic eruption. The term is most
commonly applied to streams of liquid rock that flow from a crater or fissure. It also refers to
cooled and solidified rock.
15. ______ A chemical combination of silicon and oxygen.
Dr. Houghton – Volcano Vocabulary, Dantes Peak and National Geographic video quiz
Section II. Dantes Peak - Matching (2 points each)
A. Cascade
B. Dormant
C. Volcanologist
D. Carbon Dioxide
E. Seismometer
F. Sulfur Dioxide
G. pH
H. Sierra Nevada Mt. Range
I. NASA
J. Geologist
K. Sulfuric acid
L. Dry ice
M. Pyroclastic cloud
N. Composite
O. Fertile soils
P. U.S.F.W.S
Q. Volcanic Ash
R. Volcanic bomb
S. U.S.G.S
T. 1 minute
U. 5 minutes
V. Mountain lions
W. Tootsie Rolls
X. Scruffy
16) _______ These are used to monitor earthquake activity
17) _______ This type of volcano is found where plates converge and form subduction zones
18) _______ This is the Mountain range where Dantes Peak is found
19) _______ Government organization that Harry worked for
20) _______ The type of scientist Harry is
21) _______ This is the gas that was being released that led to the death of the squirrels and
the trees
22) _______ Caused the death of Harry’s girlfriend
23) _______ This is the gas that turned the town’s water supply brown
24) _______ Measures how acidic or basic a substance is
25) _______ An inactive volcano
26) _______ This formed when Dantes Peak erupted. It was what Harry and the family escaped
by driving into the mine.
27) _______Type of tephra that covered the entire town.
28) _______ The time it takes lava flowing at 145km/hr to reach Dantes Peak 2.5 km away from
the mountain.
29) _______ Killed grandma
30) _______ Why people live near volcanos
Dr. Houghton – Volcano Vocabulary, Dantes Peak and National Geographic video quiz
Section III. National Geographic – Multiple choice (2 points each)
31) How is it possible that 9 famous volcanologists could die from a volcanic eruption?
a. They thought the volcano was dormant
b. Predicting volcanic eruptions is not yet an exact science
c. They jumped in as a dare
d. The volcano was erupting when they ventured in
32) 2000 miles below the earth’s surface the temperature is
a. 10 degrees C
b. 1200 degrees C
c. 12,000 degrees C
d. 50 below 0 degrees F
33) Where was the first volcano observatory located?
a. Mount Washington
b. Mount Everest
c. Kileaua, HI
d. New York City, NY
34) How often does the volcano in Southern Japan erupt?
a. 2 times/year
b. 400 times/year
c. once every 10,000 years
d. 5 times/day
35) Volcanic soil is good for
a. Gardening
b. Mudflows
c. Lahars
d. Growing crops
e. All of the above
36) Most people who die from volcanic eruptions die from
a. Lava flows
b. Pyroclastic flows
c. Cinder blocks
d. Floods
37) Pyroclastic flows travel about
a. the country enjoying the scenery as they go
b. 2km/hour
c. 100 mph
d. 50,000,000 miles/second
38) What happened to the Krats (Maurice and Katcha)?
a. They died doing something they truly loved to do
b. They became famous for their volcanic photos
c. They died in a surprise pyroclastic flow
d. They traveled throughout the world looking for active volcanoes and died in the name
of science
e. All of the above
Dr. Houghton – Volcano Vocabulary, Dantes Peak and National Geographic video quiz
39) The black lava in Tanzania was
a. low temp lava
b. white when it dried
c. red at night
d. very fluidic
e. All of the above
40) In Columbia, SA on November 13, 1985 a volcano erupted which melted a glacier that
caused a giant Lahar that engulfed a city and buried 23,000 people.
a. This could have been prevented if the politicians had been prevented if the politicians
had no ignored the warnings of the scientists.
b. This never could have been prevented because nothing about volcanoes is
predictable.
Section III. Only answer these questions if you did not watch the movie or
did not see the National Geographic Video.
Short answers – please use complete sentences to answer the following questions (10 or 15 points
each).
41) What was the purpose of other students watching the movie Dante’s Peak?
42) What types of volcanoes are the most explosive? Explain why they are explosive. Also
explain where they are found around the planet, why are they found there?