Which of the following statements is correct about the tsunami? 1. The term Tsunami comes from the Korean word “tsu” meaning harbour and “name” meaning wave. 2. Tsunami has a much smaller amplitude (wavelength) offshore and a very strong wavelength at sea.
Which of the following statements is correct about the tsunami? 1. The term Tsunami comes from the Korean word “tsu” meaning harbour and “name” meaning wave. 2. Tsunami has a much smaller amplitude (wavelength) offshore and a very strong wavelength at sea. Correct Answer 2 only
Tsunami:
- The word tsunami is a Japanese word.
- It is represented by two characters, tsu, meaning, "harbor", and nami meaning, "wave".
- These are a series of waves usually generated by the movement of the seafloor.
- These movements can be caused by different types of geophysical phenomena such as earthquakes, landslides, and volcanic eruptions, etc.
- The tsunami waves behave very differently in deep water than in shallow water as their speed is related to the water depth.
- Over deep water, the tsunami has very long wavelengths (often hundreds of kilometres long).
- When a tsunami enters shallow water (offshore), its wavelength gets reduced and the period remains unchanged, which increases the wave height.
Thus, only statement 2 is correct.
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Feb 20, 2025