Properties Of Waves Flashcards
Def a pulse
A single disturbance that is propagated from a point in a medium
Def a Progressive or Travelling wave
Is a disturbance which transmits energy from one place to another without transferring matter
Def Wavelength
Is the distance between two corresponding points on two successive waves
Unit is m
Def displacement
Is the distance of a point on a wave from its undisturbed position
Init is m
Def Amplitude
Is the maximum displacement attained by a point on the wave from the undisturbed position
Unit. M
Def period of a wave
Is the time taken for onc complete wave to pass a given point
Unit is s
Def frequency of a wave motion
It is the number of waves passing a given point in 1 second
Def a wave front
Is a straight line across a wave along which all the particles are in phase
Def velocity of a wave
It is the distance it travells in 1 second
Give a formula that show the relation between velocity, frequency and wavelength of a wave
v=lambda f. (Wavelength x frequency)
Explain what is meant when we state that particles in a medium are in phase
The particles are moving in exactly the same way at the same time
Name the two tupes of waves
Transverse waves
Longitudinal waves
Def a transverse wave
Is a disturbance- the displacement of which is at right angles to the direction of propagation
List the values that can be read from a displacement distance graph (when studying waves)
- Displacement of a point on the graph from the position of rest
- Amplitude
- Wavelength
- Distance travelled from the starting point
List the values that can be read from a displacement time graph (when studying waves)
- Displacement of a point on the wave from its position of rest
- Amplitude
- Time travelled from the starting point
- Period
- Frequence. (1/T)
