Spanish original · English

Hover or tap underlined Spanish terms to see their translation and exam tip.

El cruce del horizonte aparente por el limbo superior del sol en ascenso es la definición de:The crossing of the apparent horizon by the Sun’s upper limb as it ascends is the definition of:

Show the answer

Correct answer: a) Apparent sunrise (orto del sol).

Why it is correct

In celestial navigation, apparent sunrise occurs at the instant when the ascending Sun’s upper limb first touches the visible sea horizon.

Why the others are not

  • b) The upper limb crossing the horizon while descending is apparent sunset.
  • c) The true Sun is the actual body moving along the ecliptic.
  • d) The mean Sun is the fictitious body moving along the celestial equator at uniform speed.

How to work it out in the exam

  1. Sun’s upper limb crossing the apparent horizon while ascending = sunrise (orto del sol).

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.