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Sound Vocabulary
defining words
Term | Definition |
---|---|
Echo | A reflected sound wave. |
Elasticity | The ability of a material to bounce back after being disturbed. |
Density | How much matter or mass there is in a given amount of space or volume. |
Loudness | Describes your perception of the energy of a sound. |
Intensity | The amount of energy a sound wave carries per second through a unit area. |
Decibel (db) | A unit used to compare the loudness of different sounds. |
Pitch | A description of how high or low the sound seems to a person. |
Ultrasound | Sound waves with frequencies above the normal human range of hearing. |
Infrasound | Sounds with frequencies below the human range of hearing. |
Larnyx | The voice box that your vocal cords are located in. |
Doppler Effect | The change in frequency of a wave as its source moves in relation to an observer. |
What causes the Doppler Effect | When a sound sources moves, the frequency of the waves changes because the motion of the source adds to the motion of the waves. |
What causes the sonic boom | The shock wave releases a huge amount a huge amount of energy. People nearby hear the loud noise called a sonic boom when the shock wave passes by them |
Fundamental Tone | The lowest natural frequency of an object. |
Overtone | The object's higher natural frequencies. |
Acoustics | The study of how sounds interact with each other and the environment. |
Reverberation | The echoes of a sound are heard after the source stops from producing sound waves |
Ear Canal | A narrow region leading from the outside of the human ear to the ear drum. |
Ear Drum | A small, tightly stretched, drum-like membrane. |
Cochlea | A fluid-filled cavity shaped like a snail shell. |
Echolocation | The use of reflection sound waves to determine distances or to locate objects. |
Sonar | A system that uses reflected sound waves to detect and locate objects underwater. |
Sonogram | The devices uses the reflected ultrasound waves to create a picture (sonogram) |