Earthquakes and Seismic Waves
Physics ⇒ Earth and Space Physics
Earthquakes and Seismic Waves starts at 7 and continues till grade 12.
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See sample questions for grade 11
A seismograph at Station A records a P-wave arrival at 10:00:00 and an S-wave arrival at 10:02:00. If the P-wave velocity is 8 km/s and the S-wave velocity is 4.5 km/s, estimate the distance from Station A to the earthquake epicenter.
A seismograph records the following arrival times for an earthquake: P-wave at 12:00:00, S-wave at 12:01:30. If the P-wave velocity is 7 km/s and the S-wave velocity is 4 km/s, calculate the distance to the epicenter.
Describe how scientists use seismic waves to determine the structure of the Earth's interior.
Describe the difference between the epicenter and the focus of an earthquake.
Describe the main factors that affect the amount of damage caused by an earthquake.
Explain the difference between magnitude and intensity in the context of earthquakes.
Explain what is meant by the term 'aftershock'.
Explain why earthquakes are more likely to occur at transform plate boundaries.
Explain why S-waves do not travel through the Earth's outer core.
If a P-wave travels at 6 km/s and an S-wave travels at 3.5 km/s, how much sooner will the P-wave arrive at a station 210 km from the epicenter?
If the amplitude of seismic waves recorded by a seismograph increases by a factor of 10, by how much does the Richter magnitude increase?
What is the main difference between body waves and surface waves?
