sound1

Pregunta	Respuesta
How are sounds made ?	Sounds are caused by waves of vibrating particles
In a sound wave, describe what is meant by the terms compression and rarefaction	The 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
Draw a diagram to illustrate compressions and rarefactions in a sound wave	Image: Features Long (binary/octet-stream)
A sound wave is an example of what type of wave?	a longitudinal wave
What type of longitudinal wave causes Earthquakes ?	a P wave
What is the wavelength of a wave ?	The distance between 2 matching points on a wave
What sort of device show sound waves as patterns on a screen ?	An oscilloscope
What is meant by the amplitude of a wave ?	The amplitude of a wave is the height of a wave
What 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
What 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
In what unit is frequency measured ?	Hertz (Hz)
Draw an oscilloscope trace to show the difference between a high pitched and low pitched sound	Image: Hop (binary/octet-stream)

Resumen del Recurso

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