Waves: Sound and Light IPC Unit 6.

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Presentation transcript:

Waves: Sound and Light IPC Unit 6

Waves Wave-a disturbance that transmits energy through space Most waves require a medium (matter through which a wave travels like water or air)

Two Types of Waves Transverse wave-particles of the medium vibrate perpendicular to the direction the wave Ex: wave in water, light wave

Transverse Waves Crest-High point of a wave Trough-Low point of a wave Amplitude-Distance from rest position to crest or trough; amount of energy in wave Wavelength (λ)-distance between any two successive identical parts of a wave Crestcrest, troughtrough, rarefactionrarefaction

Two Types of Waves Longitudinal wave-particles of the medium vibrate parallel to the direction of the wave Ex: slinky, sound wave

Longitudinal Waves Compression–part of wave where the coils/particles are pressed together Rarefaction–part of wave where the coils/particles are spread apart

Wave Interactions Reflection-the bouncing back of a wave as it meets a surface or boundary

Wave Interactions Refraction-the bending of waves as they pass from one medium to another

Wave Interactions Diffraction-the bending of a wave as it passes an edge or an opening

Wave Interactions Resonance-one vibration causes another vibration

Wave Interactions Interference-combination of two or more waves Constructive interference: waves combine so that the resulting wave is bigger than the original waves Destructive interference: waves combine so that the resulting wave is smaller than the original waves