Which one of the following statements about earthquake waves is <strong>NOT</strong> correct?
- A. P waves move faster and are the first to arrive at the surface.
- B. P waves can travel through gaseous, liquid and solid materials.
- C. Seismographs located beyond 145° from epicentre can record the arrival of P waves.
- D. P waves have maximum area covered under its shadow zone. ✓
Correct Answer: D. P waves have maximum area covered under its shadow zone.
Explanation
S-waves have a much larger shadow zone compared to P-waves. The S-wave shadow zone extends completely beyond 105 degrees from the epicentre.
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