7th Class Social Science Sample Paper Social Science Sample Paper - 3

  • question_answer
    What is Tsunami? Explain its effect.         

    Answer:

           
    Tsunami is a Japanese word meaning 'harbour waves' as the harbours get destroyed whenever there is tsunami. An earthquake, volcanic eruption or underwater landslide might trigger huge ocean waves called tsunami.
    Effects:
    (i) These waves travel at a speed of 700 km per hour and cause damage to the coastal areas.
    (ii) The areas near the coast get submerged and it leads to earthquake.   


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