Hover or tap underlined Spanish terms to see their translation and exam tip.
La constelación “Cruz del Sur” indica dónde está el sur mediante las estrellas:The constellation Crux (“Southern Cross”) indicates where South lies by means of the stars:
Show the answer
Correct answer: a) Acrux and Gacrux.
Why it is correct
The upright (long axis) of the Southern Cross is formed by Gacrux (γ Crucis, at the top) and Acrux (α Crucis, at the foot). Extending the line from Gacrux through Acrux about 4.5 times its length locates the approximate South celestial pole.
Why the others are not
- b) Becrux (β Crucis) forms one end of the crossbar, not the long axis pointing to the south pole.
- c) Becrux and δ Crucis form the crossbar of the cross.
- d) Connects one end of the crossbar to the foot rather than the upright axis.
How to work it out in the exam
- Southern Cross toward the South Pole: extend the upright axis formed by Gacrux and Acrux.
Where this question comes from
- Ministerio de Transportes (Madrid) · 2021 · Convocatoria de diciembre · CY Test 1 · question 8 Official paper · Official answer key
- Ministerio de Transportes (Madrid) · 2021 · Convocatoria de diciembre · CY Test 3 · question 4 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.