Spanish original · English

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

El meridiano celeste que contiene al Zenit se le denomina:The celestial semicircle of the observer’s meridian that contains the Zenith is called the:

Show the answer

Correct answer: c) Observer’s upper meridian.

Why it is correct

The celestial axis divides the observer’s celestial meridian into two semicircles: the one containing the observer’s Zenith is the observer’s upper meridian, and the one containing the Nadir is the observer’s lower meridian.

Why the others are not

  • a) 'Vertical meridian' is not a standard astronomical term.
  • b) The observer’s lower meridian is the opposite semicircle containing the Nadir.
  • d) The prime meridian is the Greenwich meridian.

How to work it out in the exam

  1. Celestial meridian semicircle containing the Zenith = observer’s upper meridian.

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.