Volcano Terminology Quiz

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Which type of volcanic eruption is characterized by tall columns reaching up to 20km high with pyroclastic flow and ash fall tephra?

Phreatic

Plinian

Vulcanian (correct)

Strombolian

What is the most abundant volcanic gas released during eruptions?

Water Vapor (correct)

Carbon Dioxide

Sulfur Dioxide

Methane

What type of magma has the highest explosiveness due to its high silica content and viscosity?

Basaltic Magma

Andesitic Magma

Rhyolitic Magma (correct)

None of the above

What is Lahar?

A violent mudflow from a volcano Signup and view all the answers

What is the process that promotes bubble formation in magma by lowering the confining pressure as it rises?

Decompression Signup and view all the answers

Which type of eruption is known for being short-lived and caused by hot rocks coming in contact with water?

Phreatomagmatic Signup and view all the answers

What is the main difference between magma and lava?

Magma is molten materials beneath the Earth's surface whereas lava is molten rocks that have reached the Earth's surface. Signup and view all the answers

What is the function of a volcano's vent?

To emit volcanic materials onto the surface. Signup and view all the answers

Which type of volcano is known for being built almost entirely of fluid lava flow and not steep?

Shield Signup and view all the answers

What is the primary characteristic of a composite/stratovolcano?

Steep slope Signup and view all the answers

Where is the magma chamber located in a volcano?

Underneath the vent Signup and view all the answers

What causes the formation of cinder cone volcanoes?

Ejection of solidified lava from a single vent Signup and view all the answers

Volcano Terminology Quiz

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Questions and Answers

Which type of volcanic eruption is characterized by tall columns reaching up to 20km high with pyroclastic flow and ash fall tephra?

What is the most abundant volcanic gas released during eruptions?

What type of magma has the highest explosiveness due to its high silica content and viscosity?

What is Lahar?

What is the process that promotes bubble formation in magma by lowering the confining pressure as it rises?

Which type of eruption is known for being short-lived and caused by hot rocks coming in contact with water?

What is the main difference between magma and lava?

What is the function of a volcano's vent?

Which type of volcano is known for being built almost entirely of fluid lava flow and not steep?

What is the primary characteristic of a composite/stratovolcano?

Where is the magma chamber located in a volcano?

What causes the formation of cinder cone volcanoes?

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