Pregunta 1
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Sound is a form of what
Pregunta 2
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Sounds are made when things do what
Pregunta 3
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Which of the following can sound pass through
Respuesta
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solids
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liquids
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vacuum
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gases
Pregunta 4
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The speed of sound is faster through materials that have particles that are closer together - true or false
Pregunta 5
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sound energy moves in all directions because the particles move in all directions unless something stops them - true or false
Pregunta 6
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the unit of frequency is called what
Pregunta 7
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Sound waves with a high frequency produce sounds with a
Pregunta 8
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The amplitude refers to what about a sound wave
Pregunta 9
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the loudness of a sound depends on what
Pregunta 10
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louder sounds have more or less energy
Pregunta 11
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louder sounds have bigger or smaller amplitudes
Pregunta 12
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sound waves travel through what before entering the ear
Pregunta 13
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sound waves cause the ear drum to do what
Pregunta 14
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the vibrations are passed onto the what
Pregunta 15
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sounds cause what to vibrate
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the ear drum
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the ear lobe
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the ear canal
Pregunta 16
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people who are exposed to loud noises for long periods of time are at risk of what
Pregunta 17
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to avoid loud noise damage people often wear what
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hats
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ear protection
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glasses
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a tie
Pregunta 18
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unpleasant sound is often called what
Pregunta 19
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your hearing can get bad due to which of the following
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getting old
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listening to loud music
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illness
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mums nagging
Pregunta 20
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he loudness of a sound is measured in
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decibels (dB)
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volts (V)
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amps (A)
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watts (w)
Pregunta 21
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The threshold of hearing is what
Pregunta 22
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soft materials do what
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reflect sound
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absorb sound
Pregunta 23
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what materials are used for sound proofing
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hard materials
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soft materials
Pregunta 24
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light energy can travel through space (a vacuum) but sound energy cannot - true or false
Pregunta 25
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which travels faster light or sound
Pregunta 26
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light travels at what speed
Pregunta 27
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sound travels at what speed
Respuesta
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about 330 meters per second
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about 3000 meters per second
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about 3 meters per second
Pregunta 28
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both light waves and sound waves can be reflected - true or false
Pregunta 29
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when sound waves are reflected we call it what