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Waves - Coggle Diagram
Waves
Properties a wave
Frequency
Wavelength
Amplitude
Speed
Sound waves
Pitch = frequency
Volume = amplitude
Compression = crest
Rarefaction = trough
Parts of a wave
Wavelength
Crest
Trough
Units of measurement
Frequency = hertz (Hz)
Wavelength = metres (m)
Speed = metres per second (m/s)
Speed of waves
Light is MUCH faster than sound
Sound waves travel faster through denser medium
Air = slowest
Water = 4 x faster than air
Steel = 15 x faster than air
Equations
Speed = frequency x wavelength
Speed = distance / time
Types of waves
Mechanical
Longitudinal
Sound waves
Pressure waves
Transverse
Guitar string
Combination
Ocean waves
Requires a medium to travel
Electromagnetic
Transverse
EM spectrum (inc. light)
Does NOT require medium to travel
Light waves
Wavelength = colour
Amplitude = intensity
Direction of particle movement
Transverse = perpendicular to energy transfer
Longitudinal = parallel to energy transfer
Definition:
A disturbance that results in energy being transferred from one place to another, without transfer of matter overall.