WAVES Flashcards
all waves carry
energy
the height of a wave from the centre to it’s maximum position is known as the
amplitude
the amplitude of a wave is a measure of how much ____ it has
energy
The number of a waves to pass a point in one second is known as the
frequency
frequency is measured in
hertz, Hz
The distance travelled by a wave in one second is known as
speed
wave speed is measured in
meters per second, ms^-1
The distance between two similar points on a wave is known as the
wavelength
Wavelength is measured in
metres
The time for one wave to pass a point is known as the
period
Period is measured in
seconds, s
This is an example of a longitudinal wave
sound
The type of wave in which the particles vibrate at right angles to the energy
transverse
This is an example of a transverse wave
- water waves or any EM wave (radio, microwaves, IR, visible, UV, x-rays, gamma rays)
The highest point on a wave is called the
peak or crest
the lowest point on a wave is called the
trough
ALL EM waves travel at the speed of
light (3x10^8ms^-1)
speed is found from the equation
v=d/t
frequency is found from the equation
f=N/t
The relationship that links frequency and period is
f=1/T OR T-1/f
the wave equation is written as
v = f x lambda
the louder a sound the ___ it is amplitude
greater
The higher the frequency the ___ it is wavelength
smaller
This is the bending of a wave around an obstacle or gap
diffraction