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22 Cards in this Set

  • Front
  • Back

What are waves?

Waves are a means of transferring energy from place to place. They can also be used to transfer information. These transfers take place with no matter being transferred
What is a transverse wave?
A wave that vibrates or oscillates at right angles to the direction in which the energy or wave is moving.
Give 3 examples of transverse waves.
Light waves
Waves on the surface of water
When you slide the end of slinky from side to side
What are longitudinal waves?
A wave that vibrates or oscillates along the direction in which the energy is moving
Give 3 examples of longitudinal waves.
Sound waves
Seismic waves
When you push the end of a slinky back and for
What happens when a wave moves through a substance?
It causes particles in a substance to move from their equilibrium or resting position
What is the amplitude of a particle?
The maximum movement of particles from their equilibrium caused by a wave
What is the wavelength of a wave? Give an example.
The distance between a particular point on one wave to the same point on the next wave.
e.g. from the crest of one wave to the crest of another
If the source that is creating a wave vibrates quickly how many waves will be produced per second?
A large number of waves
If the source that is creating a wave vibrates slowly how many waves will be produced per second?
A small number of waves
What is the frequency of a wave?
The number of waves passing a particular point per second
What is frequency measure in?
Hertz (Hz)
What is the period of a wave?
The time it takes for a source to produce one wave
What is the symbol for frequency?
f
What is the symbol for amplitude?
A
What is the symbol for wavelength?
λ
What is the symbol for a wave's period?
T
What is the equation that relates frequency (f) to period (T)?
Frequency (in Hertz) = 1
time period (in seconds)

f (Hz) = 1/T
How else can the equation f=1/t be written?
T=1/f
What is the equation that links wavelength (λ), frequency (f) and speed (v)?
Wave speed (m/s)=frequency (Hz) × wavelength (λ)

v=f × λ
When the frequency of a wave is low, what is the wavelength?
Long
Does the speed of a wave always change with the change of frequency?
No