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Wave
Disturbance which travels from one place to another through oscillations (vibrations). Transfers energy without transferring matter.
Amplitude (A)
Maximum displacement from equilibrium produced by a wave
Wavelength (λ)
Distance between a point on a wave and the same point on the next.
Time Period (T)
Time taken for one complete wave to pass a point. (1 / frequency)
Frequency
Number of waves passing a point per second. (1 / Time period)
Medium
Substance or material through which a wave travels (Solids, liquids, gases)
Transverse waves
Waves where the wave vibrations are perpendicular to the direction of the wave’s energy transfer.
Longitudinal waves
Waves where the wave vibrations are parallel to the direction of the wave’s energy transfer.
Longitudinal waves contain ____ where the particles move together, and ____ where the particles move apart.
compressions, rarefactions
What does polarisation do?
Fix the direction of their oscillations to horizontal or vertical
Give 5 examples of waves
Water, sound, light, seismic, radio
Equation for Wave Speed
Wave speed = Frequency x Wavelength (V = F * lambda)
What does pitch correlate to?
Frequency. Higher pitch = higher frequency of the vibration of the source.
What does sound correlate to?
Amplitude. Louder sounds = Larger amplitude of the vibration of the source.
Wavefronts
Any 2 places where the same phase occurs.