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Chapter 16 Vocab.
Term | Definition |
---|---|
Echo | A reflected sound wave. |
Elasticity | The ability of a material to bounce back after being disturbed. |
Density | The ratio of the mass of a substance to its volume. |
Loudness | Perception of the energy of a sound. |
Intensity | The amount of energy per second carried through a unit by a wave. |
Decibel(DB) | A unit used to compare the loudness of different sounds. |
Pitch | Perception of the frequency of a sound. |
Ultrasound | Sound waves with frequencies above the normal human range of hearing. |
Infrasound | Sounds with frequencies below the human range of hearing. |
Larynx | Your vocal cords are located in your voice box, or larynx. |
Doppler Effect | The change in frequency of a wave as its source moves in relation to an observer. |
What causes a Doppler Effect? | When a sound source moves, the frequency of the waves changes because the motion of the source adds to the motion of the waves. |
What causes a Sonic Boom? | When a shock wave releases a huge amount of energy. |
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 sound stops producing sound waves. |
Ear Canal | Collects waves and directs them into a narrow region. |
Ear Drum | Small, tightly stretched drumlike membrane. |
Cochlea | A fluid-filled cavity shaped like a snail shell. |
Echolocation | The use of reflected sound waves to determine distances or to locate objects. |
Sonar | A system that uses reflected sound waves to detect and locate objects underwater. |
Sonogram | A device that uses the reflected ultrasound waves to create a picture. |