P11 - Wave properties
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What is a longitudinal wave?
Oscillations are parallel to direction of energy transfer
Give 3 examples of longitudinal waves?
Sounds waves Tsunami waves Seismic P waves
What is a transverse wave?
Oscillations are perpendicular to the direction of energy transfer
Give examples of transverse?
Electromagnetic waves Gamma waves Seismic S waves
Define frequency?
Amount of waves that pass a certain point each second
Define time period?
Time taken for 1 complete wave cycle
Give properties of a mechanical wave?
Vibrations travel though a medium Waves on a slinky Water waves Seismic waves Sound waves
Give properties of electromagnetic waves?
Vibrations travel through a vacuum X rays Radio waves Microwaves Gamma waves
What is the equation that links velocity, frequency and wavelength?
V = f X wavelength
What is the equation that links frequency and time period?
F = 1 T
Give 4 features of reflection in waves?
No change in frequency No change in wavelength No change in speed Change of wave travel direction
Give 4 features of refraction in waves?
No change in frequency Decrease in speed as wavefronts close up Decrease in wavelength Direction of wave travel changes unless at 90