Waves Flashcards
Period equation
T = 1/f
Wave speed equation
v = f x wavelength
Transverse waves examples
Light, water ripples
transverse waves description
The vibrations are perpendicular to the direction of wave travel
Longitudinal waves eg
Sound, ultrasound
What do waves do
Transfer energy
Longitudinal wave description
Vibrations are same direction as waves
Wavelength
Distance from peak to peak
Time period
Time it takes for a wave to complete a full cycle
Frequency
Number of waves produced per second
Amplitude
Height of the wave from rest (rest to crest)
Wavelength units
metres
Time period units
Seconds
Unit of speed
metres per second (m/s)
Frequency units
Hertz (Hz)
What is the human hearing range
20-20,000 Hz
Can sound waves travel through a vacuum
No
The bigger the amplitude of a sound wave…
The louder the sound
The higher the frequency of a sound wave…
The higher the pitch
What measures the frequency of a sound wave
An oscilloscope
What does sound travel fastest through
Solids as the particles are closer then in liquids/gases. The vibrations are passed from particles easier so sound travels faster
Doppler effect explanation
Towards: higher frequency, smaller wavelength
Away: lower frequency, bigger wavelength
Sound wave meets a hard flat surface
Sound wave is reflected back from the surface
