Q. Which waves have helped geologists understand the nature of the earth’s core?

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Q. What are the P and S waves collectively called?

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Q. The elastic waves generated at the focus are seismic waves.

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Q. What are the surface waves called as?

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Q. Further classification of L-waves is done into how many types?

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Q. Type of L-wave in which the particle is of a complex nature is __________

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Q. Type of L-wave in which the particle is in the direction of propagation is __________

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Q. Which waves travel faster in non-layered homogeneous structure?

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Q. The magnitude of the quake is based on what aspect of the wave?

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Q. Ritcher magnitude is the log to 10th base of maximum seismic amplitude recorded at what distance from epicenter?

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Q. The term expressing the qualitative effect of earthquake is __________

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Q. What is the depth of focus in the shallow earthquakes?

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Q. How many types on the basis of depth of focus are present?

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Q. 60 – 300 km focus distance is seen in which type of earthquake?

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Q. The type of earthquake very rare in occurrence is __________

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Q. Which class of earthquakes are most destructive?

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Q. How many types of earthquakes are classified based on the cause of origin?

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Q. Which earthquake is caused due to faulting or relative displacements of blocks of the crust of the earth along rupture planes?

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Q. Earthquakes originating due to volcanic eruptions or landslides are called __________

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Q. The number of classes of earthquakes based on magnitude of Ritcher scale are __________

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