Flashcards
Waves
Cards in this deck (30)
- 1What is a Polaroid/How does it work?
- 2What does Scalar mean?A quantity with only magnatude
- 3What does Vector mean?A quantity with magnatude and direction
- 4What is an SI unit?A standard international unit
- 5What is a prefix?A letter put before a number
- 6UncertaintyNot knowing the exact value. e.g Something is 10cm give or take 1cm
- 7Absolute UncertaintySame as Uncertainty
- 8Systematic ErrorError caused by method or equiptment
- 9Random ErrorError caused by random events
- 10Zero ErrorScale does not start at zero
- 11What is Constructive interference?Where waves boost each other.
Phase difference between 0 or 90 - 12What is Total Destructive interference?Destroys the signal.
Phase difference of 180 - 13What is Destructive interference?Slightly messes with the signal.
Phase difference between 180 and 90 - 14Why do we see different colours when looking at this bubble?1)Path difference between the white lights refraction.
2)One path has a longer route
3)This means there's a phase difference
4)If the path difference is equal to a whole number then they will arrive in phase and be constructive
5)At a different angle the path difference changes to a different colour.
- 15What does in phase mean?When two waves have a phase difference of 0
- 16What does anti-phase meanWhen two waves have a phase difference of 180
- 17How does a stranding wave form on strings1)Vibration sent down string
2)Wave reflects at fixed ends
3)Interferes with the wave traveling in opposite direction
4)This creates nodes and anti-nodes - 18What is a nodeAn area where there is no displacement.
- 19What is an anti-nodeAn area where there is maximum displacement.
- 20Energy transfer in transverse vs longitudinalEnergy is sent in a straight line in longitudinal waves however in transverse waves the energy is sent at right angles to the direction of travel.
- 21Whats the wavelengthBetween two crests
- 22Speed of a waveWavelength * Frequency
- 23Speed of light2.99 * 10 to the 8
- 24Whats intencity in a waveThe amount of enegy in a wave
- 25How is amplitude linked to intencityThe bigger the amplitude the greater the intencity.
- 26Standing waves and energyThey carry no energy
- 27First HarmonicHalf a wave length
- 28Second HarmonicOne wavelength
- 29As tension increases what happens to frequency.The frequency increases
- 30—
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- AS level Physics Flashcards on Waves, created by Jack Ives on 07/09/2016.
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- Jack Ives
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