SSC Geography Sample Paper NCERT Sample Paper-1

  • question_answer
    Consider the following statements- with respect the to earth's interior:
    1. The earth's core refracts/reflects the earthquake waves and a shadow zone is caused.
    2. None of the earthquake waves reach the region between \[103{}^\circ \]and \[143{}^\circ \] angular distances from the focus of the earthquake.
    3. Shadow zone of primary waves is larger than that of the secondary waves. Which of the above statements is/are correct?

    A)  1 only 

    B)  2 only

    C)  1 and 2 only    

    D)  1, 2 and 3

    Correct Answer: C

    Solution :

    [c] Shadow zone of primary waves is smaller than that of the secondary waves because primary waves are refracted by the earth's core and can reach the other side of the earth. On the other hand, secondary waves cannot enter the earth's core and have larger shadow zone.

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