Spanish original · English

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El Fuego de San Telmo:St Elmo’s fire is characterized by:

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Correct answer: d) All the answers are correct

Why it is correct

St Elmo’s fire is a corona glow on mastheads and yardarms under the strong electric field of a thunderstorm; it looks bluish or greenish and is harmless.

Why the others are not

  • a) True, and b and c are also true.
  • b) True, as part of all the above.
  • c) True; unlike lightning, it does not burn or damage.

How to work it out in the exam

  1. St Elmo’s fire: static corona on masts, bluish glow and harmless.

Where this question comes from

Try it: Weather visuals

Pending instructor review. Machine translation, not reviewed.