24.14.1 - Concept of Isochrons
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Practice Questions
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What does an isochron represent?
💡 Hint: Think about how we measure time.
Name one type of seismic wave.
💡 Hint: These waves are important in understanding earthquakes.
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Interactive Quizzes
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What do isochrons represent?
💡 Hint: Think about a map showing seismic wave arrival.
True or False: Isochron maps only provide information on P-waves.
💡 Hint: Consider all types of seismic waves.
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Challenge Problems
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Given a travel-time curve indicates that P-waves travel at 5 km/s, and a station recorded arrival in 15 seconds, determine the distance from the epicenter.
💡 Hint: Use the formula to find the distance.
An earthquake's epicenter is located 10 km away. If the S-wave arrival time is 20 seconds, estimate using a travel-time curve that shows S-waves move at 3 km/s whether this is reasonable.
💡 Hint: Compare different velocities of waves.
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