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1. What do you call the circular hole at the top of a volcano?
A
vent
B
crater
C
caldera
2. When molten rock is above ground, it is ______; when it is underground, it is ______.
A
Lava, magma
B
Magma,Lava
C
Magma,slag
3. These refer to any opening out of which molten rock and gases can leave a volcano.
A
caldera
B
vent
C
pipe
4. Which of these events can be triggered by a volcanic eruption?
A
landslide,tsunami,dessert
B
tsunami,landslide,earthquake
C
earthquake,landslide,hot temperature
5. These volcanoes are often very large and have gentle slopes.
A
Cinder cones
B
Stratovolcanoes
C
shield volcanoes
6. This refers to the large, underground pool of molten rack beneath a volcano.
A
Magma dish
B
Magma Chamber
C
Magma pot
7. What do you call the stream of volcanic ash, gases and lava pieces that quickly flows downhill from the eruption site?
A
Pyroclastic flow
B
Pyretic flow
C
Pyrotechnic Flow
8. Violent eruptions can sometimes throw these large chunks of rock or lava several meters into the air.
A
Volcanic missiles
B
Volcanic fastballs
C
Volcanic bombs
9. What do you call the main passage through which magma rises to reach the surface?
A
Conduit
B
Stream
C
Channel
10. Only gases such as steam and sulfur dioxide exit these holes, which are near volcanoes.
A
Craters
B
Secondary vents
C
Fumaroles
11. When pyroclastic material, rocks, mud and water violently flow down a volcano, it is called…
A
Tephra
B
Wet lava
C
Lahar
12. Compared to shield volcanoes, these are steeper, more cone-like, and erupt more violently.
A
Volcano dome
B
Sratovolcanoes
C
Crater dome
13. Covered in scoria, this is the smallest and most common type of volcano.
A
Cinder Cone
B
Shield Volcano
C
Stratovolcano
14. What do you call the small, ejected fragments of rock that fall after an eruption?
A
Tephra
B
Smog
C
Lahar
15. Which of the following is a dormant active volcano?
A
Vulcan in Camiguin
B
Mt. Matutum
C
Mt. Everest