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

¿Qué es el primer meridiano?What is the prime meridian?

Show the answer

Correct answer: c) The meridian taken as the origin of longitude, West clockwise seen from the north, 0º to 180º, East the other way.

Why it is correct

Seen from the north, the Earth turns anticlockwise towards the east. So west lies clockwise.

Why the others are not

  • a) Directions reversed.
  • b) That is the magnetic meridian.
  • d) That is the local meridian.

How to work it out in the exam

  1. From the north: east anticlockwise.

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.