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sound waves 2-3
| Question | Answer |
|---|---|
| Diffraction | The change in direction of a wave when in encounters an obstacle or edge |
| Refraction | The bending waves as they pass from one medium to another at n angle |
| Standing wave | A pattern of vibration that resembles a stationary wave |
| Reflection | The bouncing back as a wave when it meets and surface or boundary |
| Constructive | Interference that increases amplitude |
| destructive | Interference that decreases amplitude |
| Principle of superposition | Method of adding crests and troughs of interfering waves together to describe a new wave |
| Beats | Sounds produced by the interfering waves together to describe a new wave |
| Interference | The combination of two or more wave that results in a single wave |
| Nodes | Points in a standing wave that has no vibrations due to destructive interference |
| Sound | Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear. |
| Pitch | The quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone. |
| Infrasonic | Relating to or denoting sound waves with a frequency below the lower limit of human audibility. |
| Ultrasonic | Of or involving sound waves with a frequency above the upper limit of human hearing. |
| Doppler | The changes in frequency of any kind of sound or light wave produced by a moving source with respect to an observer |
| Acoustics | The properties or qualities of a room or building that determine how sound is transmitted in it. |
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