waves Flashcards
describe transverse wave
they go up and down like a Sin graph.
Describe a longitudinal wave
they go in the same direction as the wave travels. e.g. sound
what is the amplitude
the distance from the start of the wave to its peak
what do you call the bottom of a transverse wave
a trough
what do all waves transport
energy
what else can waves transport
heat
light
sound
radio signals
what is frequency
the number of waves produced per sen one measured in Hertz
f=N/t
what is the period of a wave
the time taken for one complete wave to pass. measured in seconds.
T=1/F
what equation is used to find the speed of a wave
V=f(lamba)
speed= frequency x wavelength
what is it when a wave encounters an object
it bends.
this is called diffraction
is there lots of diffraction when a wave goes through a large gap?
no, there is not much
narrow gap = most diffraction
large gap= least diffraction
what is the law of reflection
angle of incidence equals the angle of reflection
