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8 Sound
Sound keywords
Question | Answer |
---|---|
The loudness or volume of a sound. | intensity |
How high or low a note sounds. | pitch |
Move backwards and forwards. | vibrate |
Half the height of a wave. | amplitude |
The number of waves each second. | frequency |
The unit for frequency. | hertz (Hz) |
The volume of a sound. | loudness |
An instrument which shows a picture of a wave on a screen. | oscilloscope |
How high or low a note sounds. | pitch |
A way of transferring energy.Waves can be side to side or backwards and forwards movements. | wave |
The distance between the top of one wave and the top of the next. | wavelength |
A completely empty space with no particles. | vacuum |
The part of the ear that changes vibrations into electrical impulses. | cochlea |
A thin membrane inside the ear which vibrates when sound reaches it. | eardrum |
Electrical signal carried by a nerve cell. | impulse |
Unit for measuring the loudness of a sound. | decibel (dB) |
Unpleasant sound. | noise |
A meter which measures the loudness of a sound. | sound intensity meter |
The quietest sound that can be heard. | threshold of hearing |