Podcast
Questions and Answers
What is the fracture surface along which relative displacement of blocks takes place called?
What is the fracture surface along which relative displacement of blocks takes place called?
- Focus
- Hypocenter
- Fault plane (correct)
- Epicenter
What term describes the point where movement occurred and triggered an earthquake?
What term describes the point where movement occurred and triggered an earthquake?
- Focus (correct)
- Seismic wave
- Fault scarp
- Epicenter
In a normal fault, how does the hanging wall move relative to the footwall?
In a normal fault, how does the hanging wall move relative to the footwall?
- The hanging wall moves down (correct)
- The hanging wall moves up
- They move horizontally
- There is no movement
What can sudden movement along faults within the Earth cause?
What can sudden movement along faults within the Earth cause?
What is an effective way to explain geological faults to a group of students?
What is an effective way to explain geological faults to a group of students?
Which type of fault is associated with crustal extension?
Which type of fault is associated with crustal extension?
What contributes to the formation of faults?
What contributes to the formation of faults?
Which action is most likely to reduce the risk of earthquake damage in an area?
Which action is most likely to reduce the risk of earthquake damage in an area?
What is the location of the epicenter relative to the hypocenter?
What is the location of the epicenter relative to the hypocenter?
Which action is NOT an effective way to prepare for an earthquake?
Which action is NOT an effective way to prepare for an earthquake?
Which type of fault movement is most likely to generate a tsunami?
Which type of fault movement is most likely to generate a tsunami?
What is NOT a factor that influences whether an underwater earthquake will generate a tsunami?
What is NOT a factor that influences whether an underwater earthquake will generate a tsunami?
What are fractures or cracks in Earth's crust where tectonic plates meet called?
What are fractures or cracks in Earth's crust where tectonic plates meet called?
Which instrument helps us understand geologic faults by locating the epicenter of an earthquake?
Which instrument helps us understand geologic faults by locating the epicenter of an earthquake?
How does understanding geologic faults help us mitigate the risks of natural disasters?
How does understanding geologic faults help us mitigate the risks of natural disasters?
What is the best way to collect data to investigate the relationship between fault depth and earthquake magnitude?
What is the best way to collect data to investigate the relationship between fault depth and earthquake magnitude?
What is the primary concern of the Philippine Institute of Volcanology and Seismology (PHIVOLCS)?
What is the primary concern of the Philippine Institute of Volcanology and Seismology (PHIVOLCS)?
What is most likely to occur in a community hit by a magnitude 7.0 earthquake?
What is most likely to occur in a community hit by a magnitude 7.0 earthquake?
What is the most likely explanation for a series of parallel valleys and mountain ranges in a region?
What is the most likely explanation for a series of parallel valleys and mountain ranges in a region?
How can coastal communities reduce the risk of damage from tsunamis?
How can coastal communities reduce the risk of damage from tsunamis?
Flashcards
Fault Plane
Fault Plane
Fracture surface where blocks move relative to each other.
Focus (Earthquake)
Focus (Earthquake)
The point within the Earth where an earthquake originates.
Normal Fault
Normal Fault
Hanging wall moves down relative to the footwall.
Cause of Earthquakes
Cause of Earthquakes
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Normal Faults
Normal Faults
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Reverse Faults
Reverse Faults
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Fault Formation
Fault Formation
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Earthquake-Resistant Structures
Earthquake-Resistant Structures
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Epicenter vs. Hypocenter
Epicenter vs. Hypocenter
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Fault Line
Fault Line
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Seismograph
Seismograph
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Understanding Faults
Understanding Faults
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Depth Faults
Depth Faults
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Parallel Valleys
Parallel Valleys
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Tsunami Risk Reduction
Tsunami Risk Reduction
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Study Notes
- A fault plane constitutes the fracture surface where blocks experience relative displacement.
- The focus, also known as the hypocenter, marks the point of origin of an earthquake.
- Normal faults occur when the hanging wall moves downward relative to the footwall.
- Earthquakes can result from abrupt shifts along faults within the Earth.
- Using clay models to explain faults to students is more effective.
- Normal faults are linked to crustal extension, while reverse faults are associated with crustal shortening.
- Plate interactions—collision, sliding, and moving apart—contribute to fault formation through compression, shear stress, and tension.
- Constructing earthquake-resistant buildings is a key measure for reducing earthquake damage.
- The epicenter is the point on the Earth's surface directly above the hypocenter, where the earthquake begins below.
- Ignoring earthquake warnings from PHIVOLCS is not a good method of earthquake preparation.
- Normal fault movements can potentially lead to tsunami generation.
- The time of day an underwater earthquake happens does not affect tsunami generation.
- Fault lines denote fractures in the Earth’s crust where tectonic plates meet and move.
- Seismographs aid in understanding geologic faults by pinpointing earthquake epicenters.
- Knowledge of geologic faults is important for reducing disaster risks through safer infrastructure and identifying at-risk areas.
- Seismic waves recorded by seismographs are used to study the correlation between fault depth and earthquake magnitude.
- The Philippine Institute of Volcanology and Seismology (PHIVOLCS) focuses on researching climate change patterns.
- A magnitude 7.0 earthquake is likely to cause widespread damage, loss of life, and significant disruption in services.
- Parallel valleys and mountain ranges likely arise from movement along a series of faults.
- Coastal communities can mitigate tsunami damage by building seawalls, planting shoreline trees, and educating the public on hazards and evacuation.
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