CBSE Class 9 Science Sound Waves: Characteristics and Applications (Class 9 NCERT New) Quiz 1

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CBSE › Class 9 › Science › Sound Waves: Characteristics and Applications (Class 9 NCERT New)

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1. The number of wavelengths that pass a point each second

A frequency B wavelength C pitch D amplitude

2. A wave in which the vibration is in the same direction as that in which the wave is traveling; sound waves

A longitudinal wave B ocean wave C transverse wave D mechanical wave

3. The part of a longitudinal wave where the particles of the medium are close together.

A rarefaction B compression C crest D trough

4. A part in a longitudinal wave where the particles are spread apart

A compression B rarefaction C crest D trough

5. A reflected sound wave

A frequency B pitch C echo D rarefaction

6. Highest point of a wave

A crest B trough C wavelength D frequency

7. How does a sound wave interact with a human ear?

A vibrates the ear drum B bounces off the ear canal C rotates the ear drum D vibrates the ear canal

8. If the distance represented by the letter A were increased, how would it change the way the sound was heard?

A The sound would be higher. B The sound would be lower. C The sound would be softer. D The sound would be louder.

9. A transverse wave is traveling through an unknown medium as shown in the diagram. How are the particles of the medium vibrating?

A parallel to the y-axis B parallel to region R C Parallel to the x-axis D Parallel to Region Q

10. Examine the wave.Which region on this wave would correspond to rarefaction?

A W B X C Y D Z

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