Flashcards
Sound energy
Cards in this deck (19)
- 1What is sound?Energy produced by vibrations
- 2What is a "Mexican wave"?A flow of energy around a stadium
- 3What is wave motion?Is when wave transfers energy without an overall transfer of matter.
- 4How do vibrating air particles have kinetic energy?The kinetic energy is transferred from air particle to air particle as a sound wave travels.
- 5For a sound to be produced an object must be vibrating. Eg...The skin of a drum vibrates when hit.
- 6What happens to sound energy?The sound wave travel through a material, the particles of that material vibrate.
- 7What is an echo?When a sound wave is reflected
- 8What is acoustics?The qualities of a room that determine how sound is transmitted in it.
- 9Why does it several seconds to hear the sound of thunder produced by lightning some distance away?Sound travels about 340m/s through air. This can explain why it takes several seconds to hear the sound of thunder produced by lightning some distances away.
- 10What is the speed of sound in solid, liquid and gas?Solid- (iron) 5130m/s
Liquid- water 1493m/s
Gas- (air) 343m/s - 11Can sound travel in space?No, because there is no material or particles to vibrate and transfer energy.
- 12What is a pitch?How quickly particles vibrate in a sound wave.
- 13What is frequency?The number of waves that travel past a given point per second.
- 14What unit is frequency measured in?Hertz(Hz)
- 15What is wavelength?The length of one wave.
- 16What unit is wavelength measured in?Metres
- 17Example of the wavelength, pitch, and frequency of a growling dogWavelength: Long
Frequency: Low
Pitch: Low - 18What is loudness?A measure of the intensity of a sound.
- 19What unit is loudness measured in?Decibels (dB)
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- Flashcards on Sound energy, created by najma abdulkadir on 07/08/2017.
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- najma abdulkadir
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