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6. Where is the real image formed in a reflecting telescope?

  • Behind the large concave mirror
  • Infront of the small concave mirror
  • Behind the small concave mirror

7. What does convex mean?

  • Flat
  • Bulging outwards
  • Caving inwards

8. Why does light reflect?

  • Because it wants to
  • Because of a change in density between mediums
  • Because it hits a medium

9. Why are space telescopes better than telescopes on earth?

  • Because They aren't obstructed by our lights, pollution and atmosphere
  • They aren't
  • Because they're bigger so can see more

10. 'An incident ray parrallel to the axis will pass throught the focal point when its reflected'

  • True
  • False

11. The angle of reflection is.....

  • Double the angle of incidence
  • Equal to the angle of incidence
  • Half the angle of incidence

12. Concave mirrors are?...

  • Convex and bulge outwards
  • Shiny on the inside of the curve
  • Used to converge the rays

13. What is the geocentric model?

  • Where the sun, moon, planets and stars all obited the earth
  • Where the moon, planets, earth and the stars all obit the sun

14. 'Light travels slower in denser media'

  • True
  • False

15. Why can we see planets?

  • Because they're bright
  • Because they reflect sunlight
  • Because they're big
  • Because they produce visible light

16. Give an example of a transverse wave

  • A light wave
  • A sound wave
  • A slinky

17. What is a reflecting telescope made up of?

  • A large concave mirror, a small concave mirror and an eyepiece lens
  • A large concave mirror and an eyepiece lens
  • An objective lens and an eyepiece lens
  • An objective lens, a concave mirror and an eyepiece lens

18. What is the focal length?

  • The distance from the outside of the lens to the focal point
  • The distance from the object to the focal point
  • The distance from the centre of the lens to the focal point
  • The distance from the object to the lens

19. In which type of wave are the vibrations at 90 degrees to the direction of travel?

  • Transverse
  • Longitudinal

20. What is the height of the waves called? (from the midline to the peak)

  • The amplitude
  • The wavelength
  • The frequency