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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
caldera
B
volcanic vent
C
lahar
D
volcanic neck
2) As the temperature of lava increases, ____.
A
it can flow a much shorter distance
B
it begins to harden
C
its viscosity decreases
D
its viscosity increases
3) Which of the following is true about cinder cones?
A
They usually only erupt once.
B
They often occur in groups.
C
all of these
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 high 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 low viscosity, and lower gas content
5) Pyroclastic flow:
A
all of these
B
is very deadly
C
is made of gas and dust at 500 degrees Celcius
D
moves 150 miles per hour
6) The most violent volcanic eruptions are associated with what type of volcano?
A
composite cones
B
cinder cones
C
shield volcanoes
D
fissure eruptions
7) The broad, slightly dome-shaped volcanoes of Hawaii are ____.
A
cinder cones
B
shield volcanoes
C
composite cone
D
pyroclastic volcanoes
8) The Hawaiian Islands were formed when the Pacific Plate moved over ____.
A
the Aleutian Plate
B
a subduction zone
C
an ocean ridge
D
a hot spot
9) Crater Lake in Oregon was produced when ____.
A
a large explosion blew out the side of a large volcano
B
the summit of a volcano collapsed
C
a lava dam blocked a river
D
a lava flow erupted from a volcano
10) What type of lava flows?
A
pyroclastic flow
B
aa flow
C
pahoehoe flow
D
ash flow
*select an answer for all questions
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