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Q:

During an earth quake, the velocity of the body waves will_______of the material it is passing through.

  • 1
    not change
  • 2
    increase initially and then decrease
  • 3
    increase
  • 4
    decrease
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Answer : 3. "increase "
Explanation :

1. During an earthquake, the velocity of the upper part of the waves will increase along with the increase in density which will propel the object passing through it.

2. Earthquake shock When seismic waves occur in a place with soft soil sediments, their propagation increases the natural period, which produces an echo.

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