Hover or tap underlined Spanish terms to see their translation and exam tip.
El fenómeno óptico de la corona solar es debido a:The optical phenomenon of the solar corona is due to:
Show the answer
Correct answer: d) The diffraction of sunlight in the water droplets of clouds associated with a warm front.
Why it is correct
A solar or lunar corona is caused by the diffraction of light in the small water droplets of thin clouds ahead of a warm front. A halo comes from refraction in ice crystals.
Why the others are not
- a) It is an optical effect in warm-front clouds, not cold.
- b) It is caused by diffraction in water droplets.
- c) It requires a cloud veil containing water droplets.
How to work it out in the exam
- Solar corona: diffraction in water droplets (warm front).
Where this question comes from
- Región de Murcia · 2022 · 2ª convocatoria · CY Tipo 1 · question 27 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.