Learn More About Volcano Quiz

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  • 1/15 Questions

    75% of the worlds volcanoes occur in a region known as

    • The Bad Lands
    • The Ring of Fire
    • The Cascade Mountains
    • The Mid Atlantic Ridge
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About This Quiz

Quiz to determine knowledge of volcanoes. Types, locations, and eruptions are covered.

Learn More About Volcano Quiz - Quiz

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  • 2. 

    Volcanoes with HIGH amounts of dissolved gas and HIGH amounts of silica in the magma tend to be

    • Extremely explosive

    • Sometimes explosive and sometimes more gentle

    • More gentle, with flowing lava

    • Unpredictible, with any kind of eruption.

    Correct Answer
    A. Extremely explosive
    Explanation
    Volcanoes with high amounts of dissolved gas and high amounts of silica in the magma tend to be extremely explosive. This is because the high gas content creates pressure within the volcano, and the high silica content makes the magma thick and sticky. As a result, when the pressure is released, it causes violent and explosive eruptions, with ash clouds, pyroclastic flows, and potentially devastating consequences.

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  • 3. 

    The ancient Greeks believed volcanoes were the gods showing their power. What have scientists learned about volcanoes?

    • They really are related to supernatural activity

    • They are tunnels leading to the center of the Earth

    • They are always caused by transform plate boundaries

    • They are vents in the crust that let out molten rock, steam, and debris

    Correct Answer
    A. They are vents in the crust that let out molten rock, steam, and debris
    Explanation
    Scientists have learned that volcanoes are vents in the Earth's crust that release molten rock, steam, and debris. This understanding is based on extensive research and observation, which has allowed scientists to study the processes and mechanisms behind volcanic activity. Through the use of advanced technology and monitoring systems, scientists can track and predict volcanic eruptions, further deepening our knowledge of these natural phenomena. This knowledge has helped to debunk the ancient Greek belief that volcanoes are related to supernatural activity and has provided a more accurate understanding of their true nature.

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  • 4. 

    Most volcanoes occur

    • At tectonic plate boundaries.

    • In high, folded mountain ranges.

    • In the mid atlantic ridge.

    • In the middle of tectonic plates.

    Correct Answer
    A. At tectonic plate boundaries.
    Explanation
    Volcanoes occur at tectonic plate boundaries because these are the areas where the Earth's crust is either colliding, separating, or sliding past each other. This movement creates intense heat and pressure, causing magma to rise to the surface and form volcanoes. Volcanoes are commonly found along subduction zones, where one tectonic plate is forced beneath another, as well as along divergent boundaries, where plates are moving apart. In these areas, the Earth's crust is more vulnerable to fractures and magma can easily reach the surface, resulting in volcanic activity.

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  • 5. 

    The negative aspects of volcanoes are obvious in that they can cause much destruction and death, however there are positive aspects of volcanic eruptions.  What are they?

    • Volcanoes provide valuable mineral deposits and fertilize the land.

    • Volcanoes can provide geothermal energy.

    • Volcanoes build new land in places like Hawaii.

    • All of the above.

    Correct Answer
    A. All of the above.
    Explanation
    Volcanoes have both negative and positive aspects. While they can cause destruction and death, they also have positive effects. Volcanic eruptions can provide valuable mineral deposits and fertilize the land, making the soil rich and fertile. Additionally, volcanoes can provide geothermal energy, which is a renewable and sustainable source of power. Moreover, volcanic activity can lead to the creation of new land, as seen in places like Hawaii where volcanic eruptions have formed new islands. Therefore, all of the options mentioned above are positive aspects of volcanic eruptions.

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  • 6. 

    Strata, or composite volcanoes are

    • Large, steep volcanoes created by explosive eruptions that alternate with more gentle flows of lava.

    • Created by gentle flowing lava eruptions that build a shallow cone around the vent.

    • Created by repeated explosive eruptions that pile up cinders around the vent.

    • Created by random explosive or fountain eruptions, mostly at divergent boundaries.

    Correct Answer
    A. Large, steep volcanoes created by explosive eruptions that alternate with more gentle flows of lava.
    Explanation
    Strata, or composite volcanoes, are large and steep because they are created by explosive eruptions that alternate with more gentle flows of lava. The explosive eruptions produce pyroclastic materials, such as ash, cinders, and volcanic bombs, which are ejected into the air and then fall back to the ground, building up layers over time. These layers of pyroclastic materials intermix with the more fluid lava flows, resulting in the characteristic steep profile of composite volcanoes. This alternating pattern of explosive and effusive eruptions also contributes to the formation of stratovolcanoes.

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  • 7. 

    Volcanoes with LOW amounts of dissolved gas and LOW amounts of silica in the magma tend to be

    • Extremely explosive

    • Sometimes explosive and sometimes more gentle

    • More gentle, with flowing lava

    • Unpredictible, with any kind of eruption.

    Correct Answer
    A. More gentle, with flowing lava
    Explanation
    Volcanoes with low amounts of dissolved gas and low amounts of silica in the magma tend to be more gentle, with flowing lava. This is because the low gas content allows for the magma to flow more freely, resulting in a less explosive eruption. Additionally, the low silica content makes the magma less viscous, allowing it to flow more easily and creating gentle lava flows.

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  • 8. 

    Shield volcanoes like Kilaueau are

    • Large, steep volcanoes created by explosive eruptions that alternate with more gentle flows of lava.

    • Created by gentle flowing lava eruptions that build a shallow cone around the vent.

    • Created by repeated explosive eruptions that pile up cinders around the vent.

    • Created by random explosive or fountain eruptions, mostly at divergent boundaries.

    Correct Answer
    A. Created by gentle flowing lava eruptions that build a shallow cone around the vent.
    Explanation
    Shield volcanoes like Kilaueau are created by gentle flowing lava eruptions that build a shallow cone around the vent. This type of volcano is characterized by its broad, gently sloping sides and a relatively low-profile shape. The lava flows from the vent and spreads out in all directions, gradually building up the volcano over time. The lava is typically low in viscosity, allowing it to flow easily and cover large areas. This results in the formation of a wide, shield-like structure.

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  • 9. 

    Spreading center volcanoes have flowing lava that occurs when

    • A divergent boundary lets magma rise to the surface forming new land.

    • A convergent boundary, melting part which rises back up forming volcanoes.

    • A transform boundary which causes earthquakes that crack the earth letting magma out.

    • The center of a plate where magma melts its way through the crust forming a volcano.

    Correct Answer
    A. A divergent boundary lets magma rise to the surface forming new land.
    Explanation
    Divergent boundaries occur when two tectonic plates move away from each other. This movement creates a gap where magma from the mantle can rise to the surface, forming new land. As the magma reaches the surface, it cools and solidifies, creating volcanoes and spreading center volcanoes. These volcanoes have flowing lava because the magma is able to reach the surface more easily due to the separation of the tectonic plates. Therefore, the correct answer is that a divergent boundary lets magma rise to the surface forming new land.

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  • 10. 

    Pyroclastic flows come from volcanoes with high amounts of gas and silica.  These flows are

    • Mostly made up of fluid, flowing lava that runs downhill.

    • Really piles of cinders that roll down the slope and pile up at the bottom.

    • Very fine dust particles that just float into the air.

    • Hard fragments of rock and ash that roll down the volcano and are extremely dangerous.

    Correct Answer
    A. Hard fragments of rock and ash that roll down the volcano and are extremely dangerous.
    Explanation
    Pyroclastic flows are composed of hard fragments of rock and ash that roll down the volcano, making them extremely dangerous. This is because these flows can reach very high speeds, reaching up to 700 km/h, and they can generate intense heat, as hot as 1,000 degrees Celsius. The combination of the velocity, heat, and density of the rock and ash fragments can cause significant destruction and pose a great risk to human life and infrastructure in the surrounding areas.

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  • 11. 

    Island Arc volcanoes occur in the ocean when crust is subducted at

    • A divergent boundary lets magma rise to the surface forming new land.

    • A convergent boundary, melting part which rises back up forming volcanoes.

    • A transform boundary which causes earthquakes that crack the earth letting magma out.

    • The center of a plate where magma melts its way through the crust forming a volcano.

    Correct Answer
    A. A convergent boundary, melting part which rises back up forming volcanoes.
    Explanation
    Island Arc volcanoes occur in the ocean when crust is subducted at a convergent boundary. This is where two tectonic plates collide, and one plate is forced beneath the other into the mantle. As the subducting plate descends, it heats up and releases water and other volatile substances. These substances cause the mantle above to melt, forming magma. The magma then rises through the overlying plate, eventually reaching the surface and forming volcanoes. This process is responsible for the creation of island arcs, such as the Japanese archipelago or the Aleutian Islands.

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  • 12. 

    Subduction zone volcanoes occur when one plate is pushed down into the mantle by another at a convergent boundary.  This causes

    • Rock layers to bend and break making folded mountain ranges

    • Melted rock to come up through the crust forming volcanoes.

    • Strike slip faults that cause many earthquakes and volcanic rifts.

    • Spreading centers where magma rises to the surface pushing plates apart.

    Correct Answer
    A. Melted rock to come up through the crust forming volcanoes.
    Explanation
    When one tectonic plate is pushed down into the mantle by another plate at a convergent boundary, it creates intense heat and pressure. This heat and pressure cause the rocks in the subducting plate to melt. The melted rock, known as magma, is less dense than the surrounding rocks, so it rises towards the surface. As the magma reaches the crust, it can erupt through the surface, forming volcanoes. Therefore, the correct answer is that subduction zone volcanoes occur when melted rock comes up through the crust forming volcanoes.

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  • 13. 

    Volcanoes that are currently erupting are said to be active.  Volcanoes that are not erupting, but that could be expected to erupt again are

    • Extinct

    • Subducting

    • Inactive

    • Dormant

    Correct Answer
    A. Dormant
    Explanation
    The correct answer is dormant. Dormant volcanoes are those that are not currently erupting but have the potential to erupt again in the future. They are in a state of temporary inactivity, but they still have a viable magma source and can become active again under the right conditions. Extinct volcanoes, on the other hand, are those that are not expected to erupt again as they no longer have a viable magma source. Inactive and subducting are not appropriate terms to describe volcanoes that could potentially erupt again.

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  • 14. 

    Hot spot volcanoes like Hawaii occur at

    • A divergent boundary lets magma rise to the surface forming new land.

    • A convergent boundary, melting part which rises back up forming volcanoes.

    • A transform boundary which causes earthquakes that crack the earth letting magma out.

    • The center of a plate where magma melts its way through the crust forming a volcano.

    Correct Answer
    A. The center of a plate where magma melts its way through the crust forming a volcano.
    Explanation
    Hot spot volcanoes like Hawaii occur at the center of a plate where magma melts its way through the crust forming a volcano. Unlike other types of volcanoes that occur at plate boundaries, hot spot volcanoes are formed by a stationary plume of hot mantle material that rises through the plate. As the plate moves over the hot spot, magma is generated and rises to the surface, creating a volcanic island. This process continues as the plate moves, resulting in a chain of volcanoes. This explanation aligns with the information provided in the question.

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  • 15. 

    Cinder cone volcanoes are

    • Large, steep volcanoes created by explosive eruptions that alternate with more gentle flows of lava.

    • Created by gentle flowing lava eruptions that build a shallow cone around the vent.

    • Created by repeated explosive eruptions that pile up cinders around the vent.

    • Created by random explosive or fountain eruptions, mostly at divergent boundaries.

    Correct Answer
    A. Created by repeated explosive eruptions that pile up cinders around the vent.
    Explanation
    Cinder cone volcanoes are created by repeated explosive eruptions that pile up cinders around the vent. This is because cinder cone volcanoes are characterized by their steep slopes and conical shape, which are formed by the accumulation of loose volcanic fragments called cinders. These cinders are ejected during explosive eruptions and fall back to the ground, gradually building up the cone shape. The repeated explosive eruptions contribute to the growth of the volcano over time.

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  • Current Version
  • Jan 17, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 20, 2011
    Quiz Created by
    Kymyers
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