Physics: Wave Properties
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10 Terms
What is an oscillation?
A back-and-forth motion (vibration) about a central point.
What do waves transfer?
Energy and information, but NOT matter.
Define a Transverse wave
Oscillations are perpendicular (90°) to the direction of energy transfer
Define a Longitudinal wave
Oscillations are parallel (same direction) to the direction of energy transfer.
Examples of Transverse waves?
Light (all EM waves) and Water ripples.
Examples of Longitudinal waves?
Sound and Ultrasound.
What are the two parts of a longitudinal wave?
Compressions: Regions where the particles are close together, creating high pressure.
Rarefactions: Regions where the particles are spread apart, creating low pressure.
Evidence that waves don't move matter?
A buoy/cork bobs up and down on water but does not move sideways with the wave.
What is the Time Period?
The time taken (in seconds) for one complete oscillation.
What is Frequency?
The number of complete waves passing a point per second (measured in Hertz, Hz).
