SOUND - KCPE-KCSE

1. The diagrams represent two different sound waves.

How do the frequency and pitch of P compare with the frequency and pitch of Q?

2. The diagrams show the wave shapes of two different sounds. The scales are the same in each diagram.

How does sound 2 compare with sound 1?

A. Sound 2 is louder than sound 1.

B. Sound 2 is quieter than sound 1.

C. Sound 2 has a higher pitch than sound 1.

D. Sound 2 has a lower pitch than sound 1.

3. The diagrams represent two sound waves. The scales in the two diagrams are the same

Which statement describes the waves?

A. The waves have different loudness and different pitch.

B. The waves have different loudness but the same pitch.

C. The waves have the same loudness and the same pitch.

D. The waves have the same loudness but different pitch.

4. A student claps once when standing 100 m away from a large wall.

The speed of sound in air is 330 m / s.

How long after clapping does the student hear an echo?

A. 0.30 s

B. 0.61 s

C. 1.7 s

D. 3.3 s

5. A student wishes to measure the speed of sound in air. She plans to measure the time between making a sound and hearing the echo from a cliff.

She will use the equation: speed = Distance/time

Which type of sound should she make and which distance should she use in her calculation?

6. Waveforms are shown on a cathode-ray oscilloscope for a flute and a guitar playing the same note. The oscilloscope settings are the same for both waveforms

What is the difference between the two sounds?

A. the amplitude

B. the frequency

C. the quality (timbre)

D. the wavelength

7.	How will tightening a guitar string change its vibration?

A. It will vibrate with a greater amplitude

B. It will vibrate with a greater frequency

C. It will vibrate with a smaller amplitude

D. It will vibrate with a smaller frequency

8.	How does decreasing the length of a guitar string change its vibration?

A. Changes the amplitude

B. Decreases frequency

C. Decreases pitch

D. Increases frequency

9.	A loudspeaker changes …….

A. Electrical energy to sound energy

B. Potential energy to sound energy

C. Sound energy to electrical energy

D. Sound energy to potential energy

10.	Older people can’t hear …….

A. Any better or worse than younger people

B. High pitched sounds as well as younger people

C. Low frequency sounds as well as younger people

D. Low pitched sounds as well as younger people

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