Trivia Quiz: Volcanoes Ultimate Questions! Test

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Trivia Quiz: Volcanoes Ultimate Questions! Test - Quiz

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Questions and Answers
  • 1. 

    The Ring of Fire refers to the volcanoes that are

    • A.

      Located in Africa

    • B.

      Located at hot spots

    • C.

      Located around the borders of the Pacific Ocean and surrounding continents

    Correct Answer
    C. Located around the borders of the Pacific Ocean and surrounding continents
    Explanation
    The Ring of Fire refers to the volcanoes that are located around the borders of the Pacific Ocean and surrounding continents. This area is known for its high volcanic and seismic activity due to the movement and collision of tectonic plates. The Pacific Ring of Fire is home to about 75% of the world's active volcanoes and is prone to frequent earthquakes. The volcanic activity in this region is a result of the subduction of oceanic plates beneath continental plates, leading to the formation of volcanic arcs and trenches.

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  • 2. 

    The Ring of Fire is created by tectonic plates pushing against each other, specifically when a plate carrying ocean (called an oceanic plate) is pushing against a plate carrying land (called a continental plate). The ocean will always lose because it is heavier. What happens to the water of the ocean?  

    • A.

      The water evaporates.

    • B.

      The water descends into the earth & mixes with the molten rock and heat of the earth to make more magma.

    • C.

      The water increases.

    Correct Answer
    B. The water descends into the earth & mixes with the molten rock and heat of the earth to make more magma.
    Explanation
    When tectonic plates push against each other, the oceanic plate, being heavier, is forced beneath the continental plate in a process called subduction. As the oceanic plate descends into the Earth's mantle, it carries water with it. This water then mixes with the molten rock and heat of the Earth, causing it to melt and form magma. Therefore, the water from the ocean descends into the Earth and contributes to the formation of magma.

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  • 3. 

    The Ring of Fire is created because plates push against each other. What type of plate interaction is that called?

    • A.

      Convergent

    • B.

      Divergent

    • C.

      Transform

    Correct Answer
    A. Convergent
    Explanation
    The Ring of Fire is a region in the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. This is caused by the interaction of tectonic plates, specifically the convergent plate boundary. Convergent plate boundaries occur when two plates collide and one is forced beneath the other, resulting in the formation of mountains, trenches, and volcanic activity. This type of plate interaction is responsible for the creation of the Ring of Fire.

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  • 4. 

    Other volcanoes can form because the plates are pulling away from each other. This happens at divergent plate boundaries. When this process happens on land, the volcano forms in the  

    • A.

      Rift valley

    • B.

      Hot spot

    Correct Answer
    A. Rift valley
    Explanation
    Volcanoes can form at divergent plate boundaries where the plates are pulling away from each other. This process can occur on land, creating a rift valley. A rift valley is a linear-shaped lowland between several highlands or mountain ranges that is formed by the movement of the Earth's tectonic plates. As the plates separate, magma rises from the mantle and fills the gap, eventually erupting to form a volcano. Therefore, the correct answer is rift valley.

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  • 5. 

    A FIXED source of abundant rising magma that forms a volcanic center is called a

    • A.

      Rift valley

    • B.

      Hotspot

    Correct Answer
    B. Hotspot
    Explanation
    A hotspot is a fixed source of abundant rising magma that forms a volcanic center. It is characterized by a localized area of intense volcanic activity, where magma from deep within the Earth rises to the surface. This magma plume creates a hotspot, which can result in the formation of a volcanic center, such as a volcano or a volcanic island. The hotspot remains stationary while the tectonic plates move over it, leading to the formation of a chain of volcanoes, with the youngest volcano being closest to the hotspot.

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  • 6. 

    Magma & lava are often confused. Although chemical composition differs, they essentially refer to the same things. The easy way to remember this is magma is found in the ___________  and lava is found on the ___________ of the Earth.

    • A.

      Outside, inside

    • B.

      Inside, outside

    Correct Answer
    B. Inside, outside
    Explanation
    Magma is found inside the Earth, specifically in the Earth's mantle and crust. It is a molten rock mixture that contains various minerals and gases. Lava, on the other hand, is found outside the Earth, on the surface or crust. It is the magma that has reached the surface through volcanic activity. Therefore, magma is found inside the Earth, while lava is found outside on the surface.

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  • 7. 

    Volcanoes occur because of the interactions between the inside and outside of the earth. When there is an opening between the tectonic plates (either caused by convergent or divergent plates or a hotspot), a volcano can form if there is magma being propelled outward. Where do you see lava?

    • A.

      Inner core

    • B.

      Outer core

    • C.

      Mantle

    • D.

      Crust

    Correct Answer
    D. Crust
    Explanation
    Volcanoes release lava, which is molten rock, during eruptions. Lava flows out of the volcano through openings in the Earth's crust, which is the outermost layer of the Earth. Therefore, lava is seen in the crust.

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  • 8. 

    Island chains (or archipelagos) are mostly created by hotspots.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Island chains, also known as archipelagos, are mostly created by hotspots. Hotspots are areas of intense volcanic activity that occur beneath the Earth's crust. As the tectonic plates move over these hotspots, volcanic eruptions can result in the formation of islands. This process is responsible for the creation of many famous island chains, such as the Hawaiian Islands. Therefore, the statement that island chains are mostly created by hotspots is true.

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  • 9. 

    The Ring of Fire has the most volcanic activity in the world

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. It is a direct result of plate tectonics and the movement and collisions of lithospheric plates. This region is home to about 75% of the world's active volcanoes and is known for its intense volcanic activity. Therefore, it is correct to say that the Ring of Fire has the most volcanic activity in the world.

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  • 10. 

    The Ring of Fire touches nearly all continents except for...

    • A.

      Asia

    • B.

      Antartica

    • C.

      Africa

    • D.

      Both A & B

    • E.

      Both B & C

    Correct Answer
    E. Both B & C
    Explanation
    The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. It is a horseshoe-shaped belt that stretches along the coasts of several continents including Asia, North America, South America, and Australia. However, it does not touch Antarctica and Africa. Therefore, the correct answer is "Both B & C" which means that the Ring of Fire does not touch both Antarctica and Africa.

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  • 11. 

    This picture shows a volcano that already erupted in Oregon. That type of volcano is called a

    • A.

      Shield volcano

    • B.

      Composite volcano

    • C.

      Compound volcano

    • D.

      Caldera

    Correct Answer
    A. Shield volcano
    Explanation
    A shield volcano in Oregon refers to a type of volcanic landform characterized by gentle slopes and broad, flattened shapes resembling a warrior's shield. These volcanoes are typically formed by the eruption of low-viscosity basaltic lava, which flows easily and can cover large areas. In Oregon, notable shield volcanoes include the Newberry Volcano and the South Sister volcano in the Cascade Range. These volcanoes have played significant roles in shaping the landscape of the region and are important features of Oregon's geology.

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  • 12. 

    This volcano shows a picture of a high volcano in Montana. This is called a_____. Here's the inside of it.

    • A.

      Shield volcano

    • B.

      Composite volcano

    • C.

      Compound volcano

    • D.

      Caldera

    Correct Answer
    B. Composite volcano
    Explanation
    The correct answer is composite volcano. A composite volcano, also known as a stratovolcano, is a tall and steep-sided volcano that is formed by alternating layers of lava and ash. These volcanoes are typically found at subduction zones where one tectonic plate is forced beneath another. They are known for their explosive eruptions and can be very destructive. The description of a "high volcano" and the mention of the volcano's inside suggest that it is a composite volcano, as they have a characteristic conical shape and often have a central vent and a magma chamber inside.

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  • 13. 

    Magma composition helps shape a volcano. What substance determines whether magma is chunky or flowy? This is a picture of it.

    • A.

      Sand

    • B.

      Salt

    • C.

      Silica

    Correct Answer
    C. Silica
    Explanation
    Silica is the substance that determines whether magma is chunky or flowy. Silica content affects the viscosity of magma, with higher silica content leading to more viscous magma. Magma with high silica content tends to be chunky and thick, making it difficult for gases to escape and leading to explosive volcanic eruptions. On the other hand, magma with low silica content is more fluid and flowy, allowing gases to escape easily and resulting in less explosive eruptions. Therefore, the composition of silica in magma plays a crucial role in shaping the behavior and characteristics of a volcano.

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  • 14. 

    Fill in the blank: A shield volcano was formed from magma with ________ silica and _______ viscosity. 

    • A.

      Low, low

    • B.

      Low, high

    • C.

      High, high

    • D.

      High, low

    Correct Answer
    A. Low, low
    Explanation
    A shield volcano is formed from magma with low silica and low viscosity. This means that the magma has a low content of silica, which makes it less sticky and more fluid. Additionally, the low viscosity of the magma allows it to flow easily and spread out over a large area, resulting in the characteristic broad, gently sloping shape of a shield volcano.

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  • 15. 

    Viscosity means...

    • A.

      Resistance to flow

    • B.

      How easy or hard something flows

    • C.

      Both A & B

    Correct Answer
    C. Both A & B
    Explanation
    Viscosity refers to the resistance of a substance to flow. It is a measure of how easily or difficultly a substance flows. Therefore, the correct answer is "Both A & B" because both options A and B accurately describe viscosity.

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  • 16. 

    Fill in the blank: A composite volcano was formed from magma with ________ silica and _______ viscosity.

    • A.

      Low, low

    • B.

      Low, high

    • C.

      High, high

    • D.

      High, low

    Correct Answer
    C. High, high
    Explanation
    A composite volcano was formed from magma with high silica content and high viscosity. Silica is a mineral that increases the viscosity, or thickness, of magma. When magma has high silica content and high viscosity, it tends to be more explosive and can trap gases, leading to the formation of a composite volcano. These volcanoes are characterized by steep slopes and alternating layers of ash, lava, and rock fragments.

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  • 17. 

    The two factors that can influence the viscosity of lava are temperature & silica-content.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The viscosity of lava can be influenced by two factors: temperature and silica-content. Temperature plays a crucial role in determining the flowability of lava, as higher temperatures result in lower viscosity and more fluid lava. Silica-content, on the other hand, affects the lava's ability to flow by increasing its viscosity. The higher the silica-content, the more viscous the lava becomes. Therefore, both temperature and silica-content are important factors that can influence the viscosity of lava.

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  • 18. 

    Based on the homework, lava can be controlled by a) long term spraying of water  b) creating another pathway c) all of the above d) none of the above

    • A.

      Long term spraying of water on it.

    • B.

      Creating another pathway for it to flow.

    • C.

      All of the above.

    • D.

      None of the above.

    Correct Answer
    C. All of the above.
    Explanation
    The correct answer is "All of the above" because the options a) and b) both provide methods to control lava. Long term spraying of water can cool down the lava and solidify it, preventing it from flowing further. Creating another pathway for the lava to flow can divert its course and prevent it from causing damage. Therefore, both options a) and b) offer viable ways to control lava, making the correct answer "All of the above".

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  • 19. 

    Pyroclastic flows are when there is a lot of hot lava, gas, & rocks spewing from the volcano at very fast speeds. (Hint: This happened at Mt. St. Helens)

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A pyroclastic flow is a rapid and deadly flow of hot gas, volcanic fragments, and ash, often reaching speeds exceeding 100 km/h (60 mph) and up to 700 km/h (430 mph). It moves along the ground away from the volcano, causing widespread devastation and posing a severe threat to surrounding areas.

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  • 20. 

    Lahar flow is the flow of volcanic sediments & mud down the volcano and nearby valleys. It can carry large objects.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Lahar flow refers to the movement of volcanic sediments and mud down a volcano and into nearby valleys. It is capable of carrying large objects due to its high velocity and density. Therefore, the given statement is true.

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  • 21. 

    Identify the correct term: When the surface of the lava cools and hardens but the lava underneath still readily flows, this is called a…

    • A.

      Lava flow

    • B.

      Pyroclastic flow

    • C.

      Lahar

    • D.

      Lava tube

    Correct Answer
    D. Lava tube
    Explanation
    A lava tube is formed when the surface of the lava cools and hardens, creating a solid crust, while the lava underneath continues to flow. This results in a hollow tunnel-like structure where the lava can flow freely.

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