What is the Volcanic Explosivity Index (VEI) used for?
You Don’t Need to Worry About Yellowstone (or Any Other Supervolcano)

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Science, Geography
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11th Grade - University
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Categorizing volcanoes by the amount of tephra they emit
Determining the height of volcanic mountains
Measuring the temperature of lava
Predicting the exact time of volcanic eruptions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a caldera?
A type of volcanic rock
A large crater formed by a volcanic eruption
A small hill formed by lava flow
A type of volcanic gas
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which supervolcano is located beneath Yellowstone National Park?
Lake Toba
Kilauea
Yellowstone Caldera
Mount St. Helens
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What geological feature is responsible for Yellowstone's volcanic activity?
A tectonic plate boundary
A mantle hotspot
A subduction zone
A mid-ocean ridge
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of molten rock is typically needed in a magma chamber for a super eruption to occur?
10%
75%
25%
50%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary cause of super eruptions according to recent studies?
Cooling of the magma chamber
Earthquake activity
High levels of magma buoyancy
Increased pressure from gas buildup
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How often do super eruptions occur based on geological estimates?
Every 10,000 to 20,000 years
Every 1,000 to 5,000 years
Every 50,000 to 100,000 years
Every 17,000 to 45,000 years
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