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6. What unit of measurement is used when measuring how far away distant galaxies are?

  • Megaparsecs
  • Parsecs
  • Light Years
  • Km
  • Miles

7. What does parallax enable astronomers to do?

  • Measure the distance of visible stars.
  • Measure the size of distant stars.
  • Measure the luminosity of a star.

8. The luminosity of a star is affected by what two factors?

  • Size, Temperature
  • Distance from Earth, Size
  • Gravitational pull, Age
  • Size, Age
  • Distance from Earth, Temperature

9. Which is the longest day of the year in the Earths cycle?

  • Spring Equinox
  • Summer Solstice
  • Winter Solstice
  • Autumn Equinox

10. In a simple telescope which is more powerful?

  • Eyepeice
  • Objective

11. During the pulsation of a cepheid variable star the temperature and radius varies.

  • True
  • False

12. Spectrums of the light produced by stars show which of these?

  • The elements inside the star.
  • The temperature of the star.
  • The size of the star.

13. What is the first stage in a stars life cycle?

  • Protostar
  • Red Giant
  • White Dwalf
  • Neutronstar

14. What part of a star is electromagnetic radiation emmitted into space from?

  • Photosphere
  • Convection zone
  • Core

15. What property of light occurs in lenses to change its direction?

  • Refraction
  • Reflection
  • Diffraction
  • Interference

16. Converging lenses are thinner in the middle.

  • False
  • True

17. When refering to being produced through lenses, real reffers to:

  • Only seen through a lens, light doesn't pass through it.
  • Upside down compared to the object.
  • It can be displayed on a screen because light passes through it.
  • The same way up as the object.
  • Bigger than the object.

18. Who was correct about the number of galaxies in our universe?

  • Curtis
  • Shapley