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Volcanoes
Test Description: Volcanic eruptions and landforms
Instructions: Answer all questions to get your test result.
1) 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
volcanic vent
B
caldera
C
lahar
D
volcanic neck
2) As the temperature of lava increases, ____.
A
its viscosity decreases
B
it begins to harden
C
its viscosity increases
D
it can flow a much shorter distance
3) Which of the following is true about cinder cones?
A
They often occur in groups.
B
all of these
C
They usually only erupt once.
D
They are usually less than 300 meters high (small for a volcano).
4) Highly explosive volcanoes tend to have what type of magma?
A
magma with low viscosity, and lower gas content
B
magma with high viscosity, and higher gas content
C
magma with high viscosity, and no gas content
D
magma with high viscosity, and lower gas content
5) Pyroclastic flow:
A
is made of gas and dust at 500 degrees Celcius
B
moves 150 miles per hour
C
all of these
D
is very deadly
6) The most violent volcanic eruptions are associated with what type of volcano?
A
composite cones
B
fissure eruptions
C
cinder cones
D
shield volcanoes
7) The broad, slightly dome-shaped volcanoes of Hawaii are ____.
A
shield volcanoes
B
cinder cones
C
pyroclastic volcanoes
D
composite cone
8) The Hawaiian Islands were formed when the Pacific Plate moved over ____.
A
a hot spot
B
the Aleutian Plate
C
a subduction zone
D
an ocean ridge
9) Crater Lake in Oregon was produced when ____.
A
a lava flow erupted from a volcano
B
a large explosion blew out the side of a large volcano
C
the summit of a volcano collapsed
D
a lava dam blocked a river
10) What type of lava flows?
A
pahoehoe flow
B
aa flow
C
pyroclastic flow
D
ash flow
*select an answer for all questions
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