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Waves
AQA Waves
Term | Definition |
---|---|
perpendicular | At right angles |
ninety | How many degrees in a right angle |
plane | A flat mirror |
mechanical | This type of wave travels through a substance |
vibrate | moves backwards and forwards quickly |
transverse | a wave that moves up and down |
pitch | This increases if the frequency of sound wave increases. |
amplitude | The height of a wave crest or trough from the rest position |
ultrasonic | Sound wave with frequency of more than 20 000Hz |
Hertz | The unit we measure frequency in |
diffraction | The spreading of waves when they pass through a gap |
frequency | The amount of wave peaks passing a fixed point every second |
compressed | Squeezed together |
rarefaction | Stretched apart |
echo | Reflection of a sound |
reflection | the angle between the normal line and the reflected ray |
equal | The law of reflection states that the angle of incidence and the angle of reflection are ... |