Consider the following statements with reference to earthquakes: 1. Collapse earthquakes are most common 2. Tsunamis are waves generated by the tremors and not an earthquake in itself 3. High magnitude earthquakes i.e. 8+ are quite rare whereas 'tiny' types occur almost every minute Which of the statements given above are correct?
2 and 3 only
Tectonic earthquakes, caused by movement along faults, are by far the most common type, not collapse earthquakes, which are rare and localized to mining areas or limestone caverns, so statement 1 is incorrect. Tsunamis are secondary waves triggered by undersea tremors rather than being earthquakes themselves, and very high-magnitude quakes (8+) are indeed extremely rare while minor tremors occur almost continuously, so statements 2 and 3 are correct.
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