Section 3-3 Wave Interactions.

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Presentation transcript:

Section 3-3 Wave Interactions

Reflection Reflection- occurs when a wave bounces back after striking a barrier Echo- reflected sound wave

Refraction Refraction- the bending of a wave as it passes at an angle from 1 medium to another

Properties of Refraction Refraction causes different colors of light because light refracts in different amounts Refraction causes objects to look closer than they really are

Diffraction Diffraction- the bending of waves around a barrier or through an opening

Interference Interference- the overlapping of 2 or more waves Constructive Interference- occurs when the crest of 1 wave overlaps with the crest of another wave Creates larger amplitude Destructive Interference- occurs when the crest of 1 wave overlaps the trough of another wave Creates smaller amplitudes

Standing Waves Standing Wave- wave that forms a stationary patterns in which portions are at the rest position due to total destructive and other portions have a larger amplitude due to constructive interference Resonance occurs when an object vibrating at or near resonant frequency causes a second object to vibrate