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6. what was the geogcentric model

  • only planets orbit earth. moons orbit planets
  • everything: moons, planets and the sun all orbit earth
  • everything orbits the sun
  • the sun and moons orbit earth but the planets orbit the sun

7. why in space can no one hear you scream?

  • because sound is a longitudinal wave which travels through particles and space is a vaccum
  • because sound isnt a longitudinal wave and only longitudinal waves can travel in space
  • becausesound is a transverse wave which can not travel in space as its a vaccum
  • because if you took your helmet off in space you wouldnt have time to scream beofre you died

8. in regards to haves what is frequency measured in

  • Hz
  • Fq
  • kZ
  • hk

9. what type of waves are EM waves

  • some are transverse some are longitudinal
  • neither
  • transverse
  • longitudinal

10. how do longitudinal waves travel?

  • in vibrations at 90degrees in the direction of travel
  • vibrations in the same direction that the wave is traveling
  • vibrations at 45degrees in the same directionthat the wave is traveling
  • at 180degrees in the direction of travel

11. why is light refelcted?

  • because of the change in density from more to less dense
  • because the densitys both remain the same
  • because of the change in density from less to more dense
  • bacause mirrors and puddles are reflective

12. what did the heliocentric model show?

  • the moon and planets all orbit Earth but Earth orbits the sun
  • moons, planets and the earth and the sun dont orbit anything
  • the planets, moons and Earth all orbit the sun
  • the planets, moons and sun all orbit Earth

13. why are waves referacted

  • waves travel at the same speed objects just get in the way
  • waves travel different speeds in all densities
  • waves travel at different speeds in different dinsities
  • waves travels at the same speed in different densities

14. what are relecting telescopes

  • concave mirror and a converging lens
  • a converging mirror and concave lens
  • two concave lenses
  • two converging lenses

15. when waves are reflected...

  • the angle of refreaction is the same as the angle of incidence
  • the angle of refraction is at 90degrees to the angle of incidence
  • the angle of incidence is at 20 degrees to the angle of refreaction
  • the angle of refection and the angle of incidence are both parallel

16. how do transverse waves travel?

  • at 180degrees in the direction of travel
  • vibrations in the same direction that the wave is traveling
  • in vibrations at 90degrees in the direction of travel
  • vibrations at 45degrees in the same directionthat the wave is traveling

17. what is the formula for speed?

  • m= f X m/s
  • m/h=F X m
  • m/s=Hz X m
  • m/s= Hz X e

18. who discovered ultraviolet radiation

  • galileo
  • herschel
  • ritter
  • newton

19. who discovered infrared radiation

  • galileo
  • newton
  • herschel
  • ritter