Question:
Over the deep water of ocean, tsunami has
Over the deep water of ocean, tsunami has
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A tsunami is a series of very long-period ocean waves generated by the sudden displacement of a large volume of water, usually by an undersea earthquake.
Updated On: Jun 16, 2026
- Very long wavelength and limited wave height
- Small wavelength and high wave height
- Very long wavelength and high wave height
- Small wavelength and limited wave height
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The Correct Option is A
Solution and Explanation
Concept:
A tsunami is a series of very long-period ocean waves generated by the sudden displacement of a large volume of water, usually by an undersea earthquake.
Step 1:
In deep open ocean, a tsunami has an extremely long wavelength (often hundreds of kilometres) but a very small wave height, often less than a metre. Because the height is so small relative to the wavelength, ships in deep water may not even notice it passing.
Step 2:
Only when the tsunami approaches shallow coastal water does its speed drop and its energy compress, causing the wave height to grow dramatically. So in deep water it is characterised by a very long wavelength and limited (small) wave height.
Answer: Option (1) — Very long wavelength and limited wave height.
A tsunami is a series of very long-period ocean waves generated by the sudden displacement of a large volume of water, usually by an undersea earthquake.
Step 1:
In deep open ocean, a tsunami has an extremely long wavelength (often hundreds of kilometres) but a very small wave height, often less than a metre. Because the height is so small relative to the wavelength, ships in deep water may not even notice it passing.
Step 2:
Only when the tsunami approaches shallow coastal water does its speed drop and its energy compress, causing the wave height to grow dramatically. So in deep water it is characterised by a very long wavelength and limited (small) wave height.
Answer: Option (1) — Very long wavelength and limited wave height.
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