Volcanoes Flashcard

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What is a hot spot?

Back

A hot spot is a location on the Earth's surface that has experienced active volcanism for a long period of time, often resulting in the formation of volcanic islands, like the Hawaiian Islands.

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What characterizes a quiet eruption?

Back

A quiet eruption is characterized by the easy flow of magma, producing thin, runny lava that oozes quietly from the vent without explosive activity.

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What is a Cinder Cone volcano?

Back

A Cinder Cone volcano has steep angled sides, erupts by throwing blobs of lava into the air that fall as cinders, and is built over a short period of time.

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What is a convergent boundary?

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A convergent boundary is a location on Earth's crust where two tectonic plates collide, often leading to volcanic activity and the formation of mountain ranges.

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What is a crater?

Back

A crater is the deep hollow top of a volcano, formed by explosive eruptions or the collapse of the volcano's summit.

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What is a shield volcano?

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A shield volcano is a type of volcano characterized by its broad, gently sloping sides, formed by the flow of low-viscosity lava.

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What is an explosive eruption?

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An explosive eruption is characterized by the violent release of gas and magma, resulting in ash clouds and pyroclastic flows.

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What is the difference between magma and lava?

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Magma is molten rock located beneath the Earth's surface, while lava is magma that has reached the surface during a volcanic eruption.

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What is a vent in a volcano?

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A vent is an opening in the Earth's crust through which volcanic materials, such as lava, ash, and gases, are expelled.

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What is a composite volcano?

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A composite volcano, also known as a stratovolcano, is characterized by its steep, layered structure formed from alternating eruptions of lava and ash.