Flashcards
sound1
Cards in this deck (12)
- 1How are sounds made ?Sounds are caused by waves of vibrating particles
- 2In a sound wave, describe what is meant by the terms compression and rarefactionThe areas where the waves of particles are close together are called a compression and those where there are few particles are called areas of rarefaction
- 3Draw a diagram to illustrate compressions and rarefactions in a sound wave
- 4A sound wave is an example of what type of wave?a longitudinal wave
- 5What type of longitudinal wave causes Earthquakes ?a P wave
- 6What is the wavelength of a wave ?The distance between 2 matching points on a wave
- 7What sort of device show sound waves as patterns on a screen ?An oscilloscope
- 8What is meant by the amplitude of a wave ?The amplitude of a wave is the height of a wave
- 9What does the amplitude of a sound wave tell us about the sound ?A large amplitude means a loud sound and a low amplitude means a quite sound
- 10What is meant by the frequency of a sound ?The frequency of a sound is how many times a sound wave passes a certain point in 1 sec
- 11In what unit is frequency measured ?Hertz (Hz)
- 12Draw an oscilloscope trace to show the difference between a high pitched and low pitched sound
