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Water — Social Studies STD 7 — Question

CBSE BoardEnglish MediumSTD 7Social StudiesWater3 Marks
Question
How are Tsunamis formed? How do they cause destruction?
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Answer

Tsunami is a Japanese word meaning harbour waves.
  • Winds blowing at high speed during a storm form huge waves.
  • An earthquake, volcanic eruption or underwater landslides can shift large amount of ocean water.
  • These tidal waves called Tsunami may be as high as 15m. It travels at a speed of more than 700km/ hr.
  • The areas near the coasts get submerged and it leads to earthquakes also.

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