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Stars and sky — Navigation B — Instruments, Mashit 30

13 questions on stars and sky, from the Navigation B — Instruments exam of Mashit 30. The Pole Star, constellations and the sun's motion. Every question is shown with its correct answer, as in the official question pool.

Practise by topic · All 193 Navigation B — Instruments questions · Mock exam

Questions on Stars and sky

  1. Why do you see the sun rise in the east and set in the west? The earth rotates on its axis from west to east.
  2. What can a vessel conclude if every evening she measures the same altitude of the Pole Star (Polaris) above the horizon? Answers a and b are correct.
  3. In which of the following star groups is the Pole Star (Polaris) found? option b (a picture)
  4. Choose the drawing that shows the star group called the Plough (Big Dipper): option d (a picture)
  5. If the altitude of the Pole Star (Polaris) is 45° above the horizon, the observer can be assumed to be at about: Latitude 45° north.
  6. The sun rises in the east and sets in the west because: The earth rotates on its axis from west to east.
  7. What causes the seasons? The plane of the earth's equator is tilted 23½° to the plane of its orbit around the sun.
  8. What is affected by the position of the moon relative to the earth and the sun? Answers a and c are correct.
  9. What will the altitude of the Pole Star (Polaris) above the horizon be for a vessel sailing between Haifa and Cyprus, at a latitude of about 36°N? The Pole Star will be about 36° above the horizon.
  10. You are sailing east along latitude 30°S. On what bearing can you see the Pole Star (Polaris)? The star is not visible.
  11. Where is the Pole Star (Polaris) in relation to the earth? On the imaginary extension of the northern end of the earth's axis of rotation.
  12. Where does the Pole Star (Polaris) lie among the stars? At the end of the handle of the Little Dipper.
  13. Why do the stars look small? Because they are far away from us.

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