The basic properties (parts) of a wave include: frequency, amplitude, wavelength and speed.
Amplitude
- Amplitude is a measure of the distance between a line through the middle of a wave and a crest or trough of a transverse wave. It could also be the size of a compression within a longitudinal wave.
- The greater the force that produces a wave, the greater the amplitude of the wave and the greater the energy carried by the wave.
Amplitude of a Sound Wave = Loudness
In a transverse wave the higher the wave, the higher the amplitude.
Amplitude of Light Waves = Brightness
Light with greater amplitude will appear to be brighter. Light with a lower amplitude will appear to be dimmer.
Properties of Waves
Summary
Waves Interactive Exploration
Interactive Guide:
- Increase and decrease the frequency and amplitude. What happens to the wavelength of each type of wave when you change the frequency or amplitude?
- Create the wave with the most energy by manipulating the amplitude and frequency.
- Create a wave with the least energy by manipulating the amplitude and frequency.
- Create a wave with the highest pitch, but the softest sound.
Video Guide:
|
|
Topic Tips
- The greater the force that produces a wave, the greater the amplitude of the wave and the greater the energy carried by the wave.
- The greater the amplitude the louder the sound.
- The greater the amplitude the brighter the light.