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ch.11 vocabulary

physical science vocabulary

TermDefinition
Eardrum Tough membrane in the outer ear that is about 0.1mm thick and transmits sound vibrations in the middle ear.
Cochlea Spiral-shaped, fluid-filled structure in the inner ear that converts sound waves to nerve impulses.
Intensity Amount of energy that flows through a certain area in a specific amount of time.
Loudness The human perception of sound intensity.
Decibel Unit for sound intensity; abbreviated dB.
Pitch How high or low a sound seems; related to the frequency of the sound waves.
Ultrasonic Sound waves with frequencies above 20,000 Hz.
Doppler effect Change in pitch or frequency that occurs when a source of a sound is moving relative to a listener.
Music Mode of sounds that are deliberately used in a regular pattern.
Sound quality The differences among sounds having the same pitch and loudness.
Overtone A vibration whose frequency is a multiple of the fundamental frequency.
Resonator A hollow chamber filled with air that amplifies sound when the air inside of it vibrates.
Acoustics The study of sound.
Echolocation The process of locating objects by emitting sounds and interpreting the sound waves that are reflected back.
Sonar A system that uses the reflection of underwater sound waves to detect objects.
Created by: Katwill678