1938236
Descripción
Test por patriciadj, actualizado hace más de 1 año
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Creado por patriciadj
hace casi 10 años
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Pregunta 1
Pregunta
What type of wave is a sound wave?
Respuesta
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longtitudinal wave
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transverse wave
Pregunta 2
Pregunta
The crest is;
Respuesta
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the bottom of a wave
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the disturbance produced by one complete vibration at the source
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the top of a wave
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the distance travelled by one cycle
Pregunta 3
Pregunta
Which are examples of longtitudinal waves?
Respuesta
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waves on a rope, water waves, mexican wave
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ultrasonic waves, waves on a rope, water waves
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sound waves, compression waves on a spring, ultrasonic waves
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compression waves on a spring, sound waves, water waves
Pregunta 4
Pregunta
What type of wave can not be polarised?
Respuesta
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transverse
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longtitudinal
Pregunta 5
Pregunta
The apparent change in frequency of waves due to the motion of the source or the observer is called;
Respuesta
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interference
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doppler effect
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diffraction
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polarisation
Pregunta 6
Pregunta
Can mechanical waves travel without a medium?
Respuesta
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yes
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no
Pregunta 7
Pregunta
Which is not a property of waves? (wave phenomena)
Respuesta
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polarisation
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separation
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diffraction
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reflection
Pregunta 8
Pregunta
What points are at rest when a rope is vibrating?
Respuesta
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nodes
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amplitude
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trough
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antinodes
Pregunta 9
Pregunta
What type of interference is it when the amplitude of a resulting wave is less than the amplitude of the individual waves?
Respuesta
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constructive
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destructive
Pregunta 10
Pregunta
Diffraction is;
Respuesta
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the bending of waves as it passes from one medium to another
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the meeting of two waves and creating another wave
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the sideways spreading of waves into a region beyond a gap or around an obstacle
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the bouncing off a surface
Pregunta 11
Pregunta
What is the unit of frequency?
Respuesta
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cm
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watts
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grams
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hertz
Pregunta 12
Pregunta
Which one is an example of an electromagnetic wave?
Respuesta
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infra-red waves
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ultrasonic waves
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water waves
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none of the above
Pregunta 13
Pregunta
What is the speed of sound in air?
Respuesta
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340 m/s
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300000000 m/s
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4180 m/s
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390 m/s
Pregunta 14
Pregunta
Two sources of periodic waves with a constant phase difference are said to be;
Respuesta
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interfering
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coherant sources
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echoing
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none of the above
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