The P-wave shadow zone ____.
A) is recorded in Earth's core
B) is an area in which a strong P-wave are recorded by seismographs
C) is an area in which little P-wave energy is recorded by seismographs
D) is not observed during all earthquakes
E) has twice the number of P-waves normally observed
Correct Answer:
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Q29: P-waves and S-waves _.
A)are two types of
Q30: Intraplate earthquakes _.
A)occur because continental crust is
Q31: During an earthquake, seismic waves _.
A)indicate that
Q32: In January 2010 and March 2011, two
Q33: _ caused the most damage during the
Q35: If the P-S time intervals are known
Q36: The magnitude of an earthquake measures _.
A)intensity
B)damage
C)the
Q37: Below the outermost layer of Earth lies
Q38: A seismic risk map can be used
Q39: Almost _ % of earthquakes take place
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