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quiz on Galt – Magnetic Shapes

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Which volcanic eruption was one of the most powerful in recorded history, occurring in 1815?

A) Krakatoa

B) Mount St. Helens

C) Tambora

D) Vesuvius

Correct! Wrong!

What does the Volcanic Explosivity Index (VEI) measure?

A) Speed of lava

B) Temperature of magma

C) Duration of eruption

D) Eruption magnitude

Correct! Wrong!

What type of volcano is most likely to produce explosive eruptions?

A) Shield volcano

B) Cinder cone

C) Composite (stratovolcano)

D) Lava dome

Correct! Wrong!

What is the term for a fast-moving current of hot gas and volcanic matter?

A) Lava flow

B) Pyroclastic flow

C) Tephra cloud

D) Ashfall

Correct! Wrong!

What gas is most commonly released during a volcanic eruption?

A) Oxygen

B) Carbon dioxide

C) Sulfur dioxide

D) Water vapor

Correct! Wrong!

Which of these explosions is not volcanic in origin?

A) Mount Pinatubo, 1991

B) Chernobyl, 1986

C) Krakatoa, 1883

D) Mount Etna, 2021

Correct! Wrong!

Which U.S. volcano famously erupted in 1980, causing massive destruction?

A) Mauna Loa

B) Mount Rainier

C) Mount St. Helens

D) Yellowstone Caldera

Correct! Wrong!

What is the main factor that determines whether a volcanic eruption will be explosive or effusive?

A) Size of the volcano

B) Amount of water in the lava

C) Viscosity of the magma

D) Type of rock around the vent

Correct! Wrong!

quiz on Galt - Magnetic Shapes

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