Other questions in this quiz

2. Speed of recession (km/s) in calculated as...

  • Hubble constant (km s-1 Mpc-1) x distance (Mpc) or Hubble constant (s-1) x distance (km)
  • Hubble constant (s-1) x distance (Mpc) or Hubble constant (km s-1 Mpc-1) x distance (km)

3. What is red-shifting?

  • The change in wavelength of light from a close star moving away from Earth.
  • The change in wavelength of light from a distant star moving away from Earth.
  • The change in wavelength of light from a distant star moving towards Earth.

4. The parallax angle of a star is...

  • ...half the angle that a star moves in six months, against a background of very distant stars
  • ...quarter the angle that a star moves in six months, against a background of very distant stars
  • half the angle that a star moves in three months, against a background of very distant stars
  • half the angle that a star moves in nine months, against a background of very distant stars

5. A parsec (pc) is calculated as...

  • 1/parallax angle (arcseconds)
  • 2/parallax angle (arcseconds)
  • 0.25/parallax angle (arcseconds)

Comments

zo26blue

100%, excellent resource, thank you.

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