Podcast
Questions and Answers
Which magma composition has the highest viscosity?
Which magma composition has the highest viscosity?
- Rhyolitic (correct)
- Andesitic
- All magma compositions have the same viscosity
- Basaltic
Which magma composition is most likely to form in a subduction zone?
Which magma composition is most likely to form in a subduction zone?
- Basaltic
- Rhyolitic
- All magma compositions can form in a subduction zone
- Andesitic (correct)
Which magma composition is typically found in both oceanic and continental locations?
Which magma composition is typically found in both oceanic and continental locations?
- All magma compositions can be found in both oceanic and continental locations
- Andesitic
- Rhyolitic
- Basaltic (correct)
What is the approximate silica content of Andesitic magma?
What is the approximate silica content of Andesitic magma?
Which magma composition has the lowest gas content?
Which magma composition has the lowest gas content?
Where is rhyolitic magma typically formed?
Where is rhyolitic magma typically formed?
What is the relationship between silica content and magma viscosity?
What is the relationship between silica content and magma viscosity?
Which of the following statements is TRUE about magma composition and explosivity?
Which of the following statements is TRUE about magma composition and explosivity?
What is the name of the fast-moving, hot mixture of gas, ash, and molten rocks that flows away from a volcano?
What is the name of the fast-moving, hot mixture of gas, ash, and molten rocks that flows away from a volcano?
What are tephra?
What are tephra?
Which of the following is NOT a volcanic hazard?
Which of the following is NOT a volcanic hazard?
What is the name of the mixture of water, molten rocks, and debris that flows down from the side of a volcano?
What is the name of the mixture of water, molten rocks, and debris that flows down from the side of a volcano?
How does sulfur dioxide affect the environment?
How does sulfur dioxide affect the environment?
What is the main greenhouse gas released during volcanic eruptions?
What is the main greenhouse gas released during volcanic eruptions?
What is the primary cause of ash fall?
What is the primary cause of ash fall?
What is the primary threat posed by a mudflow?
What is the primary threat posed by a mudflow?
What is the main cause of magma rising to the surface?
What is the main cause of magma rising to the surface?
Which type of magma is most likely to produce an explosive eruption?
Which type of magma is most likely to produce an explosive eruption?
What is the process called when dissolved gases escape from magma and form bubbles?
What is the process called when dissolved gases escape from magma and form bubbles?
What is the main difference between decompression and crystallization in terms of bubble formation?
What is the main difference between decompression and crystallization in terms of bubble formation?
What are bubbles frozen in a porous or frothy volcanic rock called?
What are bubbles frozen in a porous or frothy volcanic rock called?
What is the main cause of volcanic lightning?
What is the main cause of volcanic lightning?
What is the approximate silica content of basaltic magma?
What is the approximate silica content of basaltic magma?
Which type of magma is most likely to form in oceanic settings?
Which type of magma is most likely to form in oceanic settings?
What is the primary composition of magma?
What is the primary composition of magma?
Which type of magma is most likely to be associated with subduction zones?
Which type of magma is most likely to be associated with subduction zones?
Which of the following is NOT a potential consequence of a volcanic eruption?
Which of the following is NOT a potential consequence of a volcanic eruption?
What is the relationship between magma's silica content and its viscosity?
What is the relationship between magma's silica content and its viscosity?
Which type of magma has the lowest viscosity?
Which type of magma has the lowest viscosity?
How does temperature affect magma's viscosity?
How does temperature affect magma's viscosity?
What is the primary difference between an active and an inactive volcano?
What is the primary difference between an active and an inactive volcano?
What is the name of the watery body within the Taal Volcano caldera?
What is the name of the watery body within the Taal Volcano caldera?
Which of the following is NOT a type of volcanic hazard mentioned in the references?
Which of the following is NOT a type of volcanic hazard mentioned in the references?
According to the content, where is the Department of Education - Bureau of Learning Resources (DepEd-BLR) located?
According to the content, where is the Department of Education - Bureau of Learning Resources (DepEd-BLR) located?
What is the term for the resistance of fluids to flow?
What is the term for the resistance of fluids to flow?
What is the title of the book mentioned in the references?
What is the title of the book mentioned in the references?
What type of magma has a low silicate content and is rich in iron and magnesium?
What type of magma has a low silicate content and is rich in iron and magnesium?
Which of the following is a valid email address for the Department of Education - Bureau of Learning Resources (DepEd-BLR)?
Which of the following is a valid email address for the Department of Education - Bureau of Learning Resources (DepEd-BLR)?
What is the term for the throwing out of molten materials, steam, and other materials from a volcano?
What is the term for the throwing out of molten materials, steam, and other materials from a volcano?
What is the name of the author of the "Explosions" article?
What is the name of the author of the "Explosions" article?
Which of the following is NOT a source of information mentioned in the references?
Which of the following is NOT a source of information mentioned in the references?
What is the gaseous phase of water?
What is the gaseous phase of water?
What is the main topic of the references?
What is the main topic of the references?
What is the term for a substance that evaporates quickly?
What is the term for a substance that evaporates quickly?
What type of eruption involves magma flowing out from inside the Earth to the surface and onto the ground?
What type of eruption involves magma flowing out from inside the Earth to the surface and onto the ground?
Which of the following is NOT a URL mentioned in the references?
Which of the following is NOT a URL mentioned in the references?
What is a hot spring in which water intermittently boils, sending a tall column of water and steam into the air?
What is a hot spring in which water intermittently boils, sending a tall column of water and steam into the air?
What is the term for the continuous physical force exerted on or against an object by something in contact with it?
What is the term for the continuous physical force exerted on or against an object by something in contact with it?
Flashcards
Basaltic magma
Basaltic magma
Low viscosity, low gas and silica content; found in oceanic crust.
Andesitic magma
Andesitic magma
Intermediate viscosity, gas, and silica content; associated with subduction zones.
Rhyolitic magma
Rhyolitic magma
High viscosity, high gas and silica content; found in continental crust.
Viscosity
Viscosity
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Gas content in magma
Gas content in magma
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Silica content in magma
Silica content in magma
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Increasing explosiveness order
Increasing explosiveness order
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Subduction zones
Subduction zones
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Active Volcano
Active Volcano
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Inactive Volcano
Inactive Volcano
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Volcanic Eruption Types
Volcanic Eruption Types
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Volcanic Ash
Volcanic Ash
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Magma
Magma
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Phreatomagmatic Eruption
Phreatomagmatic Eruption
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Temperature Impact on Magma
Temperature Impact on Magma
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Volcanic Hazards
Volcanic Hazards
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Tephra
Tephra
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Carbon Dioxide
Carbon Dioxide
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Sulfur Dioxide
Sulfur Dioxide
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Ash Fall
Ash Fall
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Mud Flow (Lahar)
Mud Flow (Lahar)
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Lava Flow
Lava Flow
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Pyroclastic Flow
Pyroclastic Flow
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Magma chamber
Magma chamber
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Vesiculation
Vesiculation
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Decompression
Decompression
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Crystallization
Crystallization
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Explosive eruptions
Explosive eruptions
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Basaltic Lavas
Basaltic Lavas
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Water Vapor
Water Vapor
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Volcanic Eruption
Volcanic Eruption
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Geyser
Geyser
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Geothermal Hot Spring
Geothermal Hot Spring
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Low Silicate Magma
Low Silicate Magma
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Explosions
Explosions
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Mud Flow
Mud Flow
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Assessment
Assessment
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Module 2
Module 2
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Department of Education
Department of Education
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References
References
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Study Notes
Volcanic Eruption
- This module covers the phenomena behind volcanic eruptions.
- Key questions addressed include magma composition, formation, viscosity effects, eruption processes, and material effects.
- Volcanic eruptions are a result of various phenomena including temperature and composition of magma affecting viscosity, and the eruption process itself. These processes and features have varying effects on living things and ecosystems.
What I Need to Know
- The learning competency focuses on explaining volcanic eruptions (S9ES-IIIb-27).
- After completing this module, learners are expected to:
- Describe magma formation and composition, explaining temperature and viscosity effects.
- Relate magma characteristics to eruption types.
- Explain the volcanic eruption process.
- List and describe the material emissions from volcanoes, along with their effects on humans and the environment.
What I Know
- Multiple Choice Questions (MCQs) covering defining terms (magma, lava, etc.), factors contributing to magma formation, influencing factors for magma viscosity, and the driving forces behind eruptions.
- The questions focus on identifying correct concepts associated with volcanic phenomena.
What's In
- Review exercises to gauge prior knowledge about volcanoes, volcano types, and volcanic formation.
- Questions covering basic concepts of active versus inactive volcanoes and different types of volcanic eruptions are asked.
What's New
- Facts about volcanoes, their origins, and the dangers involved, including the 2020 Taal eruption in the Philippines.
- Description of magma composition, crystal content and its effects on viscosity.
What is It
- Detailed explanation of magma composition.
- Explanation of magma characteristics (viscosity, temperature) and relationship to eruption types.
- Description of the volcanic eruption process.
- Explains the process of volcanic eruptions through the release/emission of materials (lava, ash, steam) and their subsequent effects.
- Classification of magma is provided (basaltic, andesitic, rhyolitic).
- Description of volcanic hazards.
Activity 1: True or False
- True/False statements about magma, viscosity, and the relationship between magma composition and explosiveness.
Activity 2: Finding the Sequence!
- Ordering steps in the volcanic eruption process.
Activity 3: Volcanic Eruptions: Cause and Effect
- Effects of volcanic material emissions (lava, steam, debris, gases, ash) on the environment and human health.
- Questions regarding precautionary measures before, during, and after volcanic eruptions.
- Information on causes and effects of volcanic eruptions is provided.
What I Have Learned
- Review questions about the volcanic process with key terms and concepts.
- Explanation of volcanic processes, emphasizing vesiculation, decompression, and crystallization.
- Includes crucial factors like volatile/gas content and viscosity.
- Effects of eruptions are reviewed. This section summarizes the key concepts and processes related to volcanic activity.
What I Can Do
- Graphic organizer to connect key terms related to volcanic eruptions using a lesson map.
- Information needed to complete the graphic organizer is provided.
Assessment
- Multiple Choice Questions (MCQs) about magma formation, viscosity, eruption types, and the nature of volcanic activity and hazards related to volcanoes.
Additional Activities
- Magic Square to identify key terms in volcanic phenomena.
- Review of key terms to further enhance understanding and recall.
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