Volcanos study guide 2 part
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Geology
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Dec 6, 2023
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docx
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Uploaded by neryblue15
Volcanos study guide 2 part
Question 1
The majority of Earth's volcanoes occur:
In the middle of tectonic plates
At Hot Spots
Correct!
Along the convergent and divergent plate boundaries
At transform plate boundaries
Question 2
What is a subduction zone?
Similar to a divergent plate boundary
Correct!
A point where a tectonic plate is pushed down into the mantle
Where a tectonic plate is pushed upward to create mountains
A crack in the tectonic plates that pushes them apart
Question 3
What is a Hot Spot?
A volcano that is fed by the inner core
Correct!
Volcanism created by a stable mantle plume
Volcanism created by a moving mantle plume
A volcano that is always explosive
Question 4
Why do Volcanic Islands such as Hawaii have chains of islands (volcanoes) that stretch hundreds of
miles?
Because the plates are splitting apart
It is still unknown
Because of the length of the subduction zone
Correct! Because the plate moves over the stationary mantle plume
Question 5
True or False: Marine volcanoes are more explosive than Land Volcanoes
It is not known
True
Correct! False
Question 6
True or False: Acid (Stratovolcanoes) are explosive
Correct! True
False
Question 7
1 / 1 pts
How could a large volcanic eruption cause global climate change?
The lava alters the baseline crustal temperature
They cause the magnetic field to shut down exposing Earth to radiation
Volcanoes don't affect the climate
Correct!The ash could blacken the sky, blocking sunlight for years
Question 8
1 / 1 pts
Why are Acid (Stratovolcanoes) more pointy in shape than Basic (Shield) Volcanoes?
They don't erupt lava
No answer text provided.
Their lava is less viscous
Correct
Their lava is more viscous
Question 9
1 / 1 pts
What techniques did the researchers use to locate the mystery Volcano?
Uranium dating, Magma coring, Earthquake data
An extensive paleontologic survey in Russia
Correct! Ice cores, radiocarbon dating, google earth, chemical analysis
Astrophysical analysis of moon rocks
Question 10
What is a caldera?
A highly irregular plate boundary
Correct!
A volcano that has blown its top off
A volcano that failed to form
An unkown plate boundary
Question 11
When a Hot Spot occurs on land, it becomes a:
Baby Volcano
Regular Volcano
Extinct volcano
Correct!
Supervolcano
Question 12
True or False: (Basic) Shield Volcanoes are mostly associated with pyroclastic flows
Correct! False
True
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