Sound waves reflect off obstacles, creating echoes. Impedance plays a role in the reflection of sound waves. Sound waves can also exhibit diffraction around obstacles or openings.
Echoes occur when a sound wave reflects from an obstacle back to the original source. This phenomenon can be observed when sound waves bounce off walls, hills, or any solid surface, creating a delayed repetition of the sound.
Sound waves reflect due to the principle of impedance, where the resistance to the wave's movement across boundaries causes a partial reflection. This reflection follows the law of sound reflection, where the angle of reflection equals the angle of incidence.
Additionally, while sound waves can reflect, they can also undergo other behaviors like diffraction, where the waves bend and spread around obstacles or through openings, affecting how we perceive sound in different locations.
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