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UPSC Geography Oceans and Continents / महासागरों और महाद्वीपों Question Bank Oceans and Marine Resources / Canals etc

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    DIRECTIONS: The following question consist of two statements. Statement I and Statement II. You are to examine these two statements carefully and select the answers to these questions using the codes given below.
    Statement I Tsunami is small in open ocean yet may be over 30 m high when it reaches a coastline.
    Statement II Tsunami is have long wavelength and they travel across the open ocean at high speed. As they approach shore, the wavelength decreases and the wave height increases.
    [NDA 2017-II]

    A)  Both the statements are individually true and Statement II is the correct explanation of Statement I

    B)  Both the statements are individually true but Statement II is not the correct explanation of Statement I

    C)  Statement I is true, but Statement II is false

    D)  Statement I is false, but Statement II is true

    Correct Answer: A

    Solution :

     In the open ocean the height of tsunami is less than 1 meter however, its height increases up to 15 meters or more at shallow coastal water. The wavelength in the open ocean is between 650 to 960 km/h.


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