Unit 5-waves And Light Flashcards
Material through which a wave travels.
Medium
Waves
Disturbance that transfers energy from one place to another.
Longitudinal wave
Particles move back and forth in the same direction that the wave travels, or parallel to the wave
The spring coils move up and down as the wave passes
Transverse wave
Mechanical waves
Waves that require a medium
Disturbances in electric and magnetic fields
Electromagnetic waves
Wavefronts
The peaks can be drawn as shapes ,shut as circles and spheres
The speed at which a wave travels
Wave speed
Amplitude
Measure of how far particles in the medium move away from their normal rest position.
Time period required for one cycle.
Wave length
Frequency
Tells you how many cycles occur in an amount of time, most commonly 1 s
Frequency is measured in hertz. So it’s like a measuring tool.
Hertz
Radiation
The transfer of energy as EM waves. EM=electromagnetic
The range of frequencies that EM wave can have.
EM spectrum
Infared
Has slightly longer wavelengths than red light.