Large tidal waves caused by an underwater earthquake or volcanic eruption are known as a _________.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. tsunami .
A tsunami is a powerful series of sea‑waves generated by the sudden displacement of a large volume of water—typically due to an underwater earthquake, volcanic eruption, or submarine landslide. These waves travel across the ocean at high speed, often hundreds of kilometres per hour, and dramatically increase in height as they approach shallow coastal waters, causing extensive flooding and devastation.
Other options :
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Tornado: A rapidly rotating column of air that extends from a thunderstorm to the ground; very localized and short‑lived.
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Hurricane: A large tropical cyclone with sustained high winds, forming over the Atlantic or eastern Pacific; differs by region and scale.
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Typhoon: Essentially the same type of storm as a hurricane, but occurring in the northwest Pacific region.