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Physical Science: 7
Physical Science Lesson 7: Sound
Question | Answer |
---|---|
Sound: | A form of energy produced by vibrating objects |
Sound Wave | A wave that transmits sound |
Vibrate: | Move back and forth rapidly |
Frequency | The rate at which a vibration occurs that constitutes a sound wave |
Sonar | A technique that uses sound waves to navigate and locate items under water |
Decibels | The unit used to measure the intensity of a sound The degree of loudness |
Pitch | The degree of highness or lowness of a tone |
Echo | A sound caused by the reflection of sound waves from a surface |
Doppler | The apparent change in frequency and wavelength of a wave, such as a sound wave |