Volcanoes: Structure and Activity Quiz
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Questions and Answers

What is the main function of the conduit in a volcano?

  • It connects the magma chamber to the crater. (correct)
  • It is the accumulation point for ejected materials.
  • It is the main opening from which lava is expelled.
  • It forms the external structure of the volcano.

What characterizes an active volcano?

  • It is visually similar to dormant volcanic formations.
  • It has had at least one eruption in the past 10,000 years. (correct)
  • It has shown no volcanic activity recently.
  • It has not erupted for the last 10,000 years.

Which of the following statements about the crater of a volcano is true?

  • It is a solid mass of cooled lava.
  • It is the main vent from which lava escapes.
  • It is a funnel-shaped hollow at the top of the vent. (correct)
  • It is a channel below the earth where magma accumulates.

What is classified as a potentially active volcano?

<p>A volcano that has no records of activity but appears relatively young. (C)</p> Signup and view all the answers

What is the role of the magmatic chamber in a volcano?

<p>It is the reservoir of molten rock beneath the Earth’s crust. (B)</p> Signup and view all the answers

What are the main materials expelled during a volcanic eruption?

<p>Ash, gases, and magma. (C)</p> Signup and view all the answers

Which of the following best describes a side vent in a volcano?

<p>A secondary opening for magma to escape. (C)</p> Signup and view all the answers

What differentiates inactive volcanoes from active ones?

<p>Inactive volcanoes are not expected to erupt for a long time. (D)</p> Signup and view all the answers

What characteristic of magma primarily affects the explosiveness of a volcanic eruption?

<p>Viscosity (C)</p> Signup and view all the answers

Which type of lava flow is known for its rough and jagged surface?

<p>Aa (B)</p> Signup and view all the answers

What is the primary role of a turbine in a geothermal power plant?

<p>To convert kinetic energy of steam into mechanical energy (C)</p> Signup and view all the answers

Which of the following represents a negative impact associated with harnessing geothermal energy?

<p>It can contribute to greenhouse gas emissions (C)</p> Signup and view all the answers

What does the cooling tower in a geothermal power plant do?

<p>Condenses steam back into water (D)</p> Signup and view all the answers

In the context of geothermal energy, what is a production well used for?

<p>To extract hot water or steam from geothermal reservoirs (D)</p> Signup and view all the answers

Which volcanic hazard is associated with the downward flow of hot ash and gas?

<p>Pyroclastic flow (A)</p> Signup and view all the answers

What is the function of transmission lines in a geothermal power system?

<p>To carry generated electricity to the grid (C)</p> Signup and view all the answers

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Flashcards

What is a volcano?

A geological formation where molten rock, gases, and ash are ejected from the Earth's interior.

What is a magma chamber?

A pool of molten rock beneath the Earth's crust.

What is a main vent?

The main opening on a volcano's surface through which lava, gas, and ash erupt.

What is a conduit?

A tube-like structure connecting the magma chamber to the crater, allowing magma to rise.

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What is a side vent?

A smaller opening on a volcano's side that releases magma.

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What is a crater?

The funnel-shaped or bowl-shaped opening at the top of a volcano where eruptions occur.

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What is lava?

Molten rock that flows onto the Earth's surface during a volcanic eruption.

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What is an ash and gas cloud?

A mixture of rock fragments, minerals, glass particles, and gases expelled during a volcanic eruption.

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Viscosity

The ability of a fluid to resist flow.

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Lava flow

A flow of hot, molten rock (lava) moving downslope or away from an eruption vent.

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Aa lava flow

A rough, jagged lava flow with sharp edges, posing a significant hazard.

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Pahoehoe lava flow

A smooth-surfaced lava flow that moves more slowly than aa lava flow.

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Pyroclastic flow

A mixture of hot gas, ash, and rock fragments that travels rapidly downslope at high speeds.

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Lateral blast

A sudden, powerful explosion of volcanic material that can devastate large areas.

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Volcanic gas

Gases released from a volcano, including water vapor, carbon dioxide, and sulfur dioxide.

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Lahar

A fast-moving flow of water, mud, and debris triggered by volcanic activity.

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Study Notes

https://cdn.fbsbx.com/v/t59.2708-21/471630565_1720726718659579_6288821615153349669_n.pdf/volcanoes.pdf?_nc_cat=103&ccb=1-7&_nc_sid=2b0e22&_nc_ohc=E_MQQy9JAKcQ7kNvgFIAGys&_nc_zt=7&_nc_ht=cdn.fbsbx.com&_nc_gid=Aul8Cl27HNdHaGhyeQnV9uP&oh=03_Q7cD1gEERIbcPN1gu0PcjvZd_A6-h4iVD7mFbfA9RgdXaUJq8Q&oe=67819C2C&dl=1

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Description

Test your knowledge about the structure and functions of volcanoes with this quiz. Explore concepts such as the conduit, magmatic chamber, and the classification of volcanoes. Perfect for students learning about geological phenomena.

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