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WAVES (SI units & Formula (Frequency: in hertz (Hz), Period: in…
WAVES
Features
Period
means Time taken to produce 1 complete wave
Wavelength,λ
Dist. betwn 2 troughs/2 crests
Amplitude
Max. displacemt fr. rest/equilibrium to crest/trough
Frequency
e no. complete waves PER second
Wavefront &Wavemotion
Plane wavefront
movemt of dipper= up-down in water
:warning:
Directn of waves ⊥ wavefront
E.G. Spherical Dipper
Circular Wavefront
E.G. Wooden Bar
movemt of bar=downwards onto water
:warning:
Directn of waves
ll
wavefront
SI units & Formula
Frequency: in hertz (Hz)
Period: in seconds (s)
Amplitude: in metres (m)
Wavelength,λ : in metres (m)
T=1/f :red_flag:
f=1/T :red_flag:
V=fλ :red_flag:
:fire:
Types of waves
Longitudinal
Link to properties shown in
WOODEN BAR
E.g. Sound
Transverse
E.g. Pulse
Link to properties shown in
SPHERICAL DIPPER
Terms & Meanings
:check:
WAVES
only transfer energy NOT matter
:check:
PROPOGATION
: directn of energy travel by particles
:check:
Transverse Pulse
: a wave which e particles in e medium VIBRATES ⊥ to e propogation
:check:
Wavefront
: imaginary line on a wave over which particles r vibrating in e same phase.
Speed
Speed of wave is determined by e medium it travels thru
Change in medium
affects V & λ ; NOT f
