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Flashcards

Waves

Cole Vertongen Physics Year 12 English 27 cards

Cards in this deck (27)

  1. 1Speed of light Value - ... Symbol - ...Speed of light
    300,000 km^-1 = 3.0 x 10^8 ms^-1
    Symbol - C
  2. 2RefractionRefraction is the bending of light when it travels from one medium to another.
  3. 3Why does light refract?It refracts because the speed in the medium changes.
  4. 4When light refracts what happens to the frequency and wavelength of the wave?The frequency of the wave remains the same.
    Therefore the wavelength of the wave will change.
  5. 5WaveWaves are a motion that transfers energy without moving mass or particles from one point to another.
  6. 6Absolute Refractive Index - define Symbol - ... Unit - ...Absolute Refractive Index - The refractive index of a transparent material is a measure of how much the light slows down as it enters from air.
    Symbol - n
    Unit - no unit
  7. 7Critical Angle (CA)CA is the angle of incidence when the angle of refraction is 90. This only occurs when the light is travelling from a higher refractive index to a lower index.
  8. 8Total Internal Reflection (TIR)TIR occurs when the angle of incidence is greater than the critical angle.
  9. 9When using a convex mirror where is the image?The image is always behind the mirror.
  10. 10Two types of wavesMechanical & Electromagnetic
  11. 11Mechanical waves Medium - yes or no? ExamplesMedium is needed
    e.g. sound, water, seismic, slinky
  12. 12Electromagnetic Medium - yes or no? ExamplesMedium isn't needed
    e.g. light, radio, x-ray
  13. 13Transverse wavesTransverse waves are when the displacement is at right angles to the direction of the waves.
  14. 14Longitude wavesLongitude waves are when the displacement is parallel to the direction of the wave.
  15. 15DisplacementDistance from equilibrium to any point.
  16. 16WavelengthThis is the distance between two corresponding points (e.g. crest to crest)
  17. 17AmplitudeDistance from equilibrium to crest
  18. 18Frequency - define Symbol - ... Unit - ...Frequency - Number of waves passing a point in 1 second.
    Symbol - f
    Unit - Hertz (Hz)
  19. 19Period - define Symbol - ... Unit - ...Period - Time for one wave to pass through a point.
    Symbol - T
    Unit - seconds (s)
  20. 20T = 1 / fT = Period (s)
    f = frequency (Hz)
  21. 21f = 1 / Tf = frequency (Hz)
    T = Period (s)
  22. 22Phase - when are waves in phase?Two or more points are in phase with each other if they undergo the same motion.
    In phase points are multiples of wavelengths or 360 degrees apart.
  23. 23Phase - when are waves out of phase?Completely out of phase points are 180 degrees or half wavelengths apart.
  24. 24Interference of lightWhen light shines through a double slit interference occurs.
  25. 25Path difference (p.d)Path difference is the distance that waves travel to a point from the two sources.
  26. 26Constructive interferenceIt occurs when the two waves arrive at a point in phase with each other (anti-node).
  27. 27Destructive interferenceTwo waves arrive out of phase with each other (node).

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Description
Year 12 Physics Flashcards on Waves, created by Cole Vertongen on 07/11/2017.
Created by
Cole Vertongen · Nov 2017
Updated
Nov 7, 2017
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