21-4 Question Preview (ID: 1937)
21-4.
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What is a volcano?
a) When two tectonic plates move past each other
b) Any opening in Earth's surface through which magma has reached Earth's surface
c) Where lava flows
d) Where the earth shakes
Which of the following is lava?
a) Magma that hasn't reached earth's surface
b) magma that has reached earth's surface
c) magma that is flowing on earth's surface
d) magma that is flowing beneath earth's surface
Which of the following is a shield volcano?
a) Lava flows great distances creating a gentle sloping mountain
b) Smallest, particles fall to the ground around the vent forming a cone
c) Has gas trapped in lava creating explosions and steeper slopes
d) Where boundaries move past each other
Which of the following is a composite volcano?
a) Lava flows great distances creating a gentle sloping mountain
b) Smallest, particles fall to the ground around the vent forming a cone
c) Has gas trapped in lava creating explosions and steeper slopes
d) Where boundaries move past each other
Which of the following is a cinder cone?
a) Lava flows great distances creating a gentle sloping mountain
b) Smallest, particles fall to the ground around the vent forming a cone
c) Has gas trapped in lava creating explosions and steeper slopes
d) Where boundaries move past each other
What are underwater volcanoes called?
a) Underwater volcanoes
b) Divergent volcanoes
c) Convergent volcanoes
d) Seamounts
Along what boundaries do volcanoes occur?
a) Divergent
b) Convergent
c) Tranform fault
d) Slip
Along what boundaries do underwater volcanoes occur?
a) Divergent
b) Convergent
c) Tranform fault
d) Slip
Where can volcanoes occur when they're in the middle of plates?
a) Over boundaries
b) Under boundaries
c) At hot spots or over mantle plumes
d) Under mantle plumes
Mushroom shaped trails of hot rock rising from deep inside the mantle, meet as they rise, and erupt from volcanoes at hot spots at the surface are what?
a) Crust plumes
b) Mantle plumes
c) Core plumes
d) Inner core plumes
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