Column A (Frequency) |
Column B (Sound range they fall) |
5 Hz |
Audible range |
25000 Hz |
Infrasonic range |
25 Hz |
Ultrasonic range |
250 Hz |
|
10 Hz |
|
120000 Hz |
Column A |
Column B |
The maximum disturbance caused by the wave |
wavelength |
The distance travelled by a wave per second |
frequency |
The no of complete vibrations per sec |
Velocity |
The distance between one crest of wave and next one |
Amplitude |
When we change a feeble sound to loud sound, we increase its |
Time period |
When we change the pitch, what is getting changed |
Sound velocity |
Frequency |
Wavelength |
Time period |
Audible/Ultrasonic/Infrasonic |
330 m/s |
550Hz |
? |
? |
? |
500hz |
68m |
? |
? |
|
343.4m/s |
? |
1.7 cm |
? |
? |
4. It is used break kidney stones into fine grains
7. The unit of frequency
8. The loudness of the sound depends on this
9. Medical instrument used by the doctors for listening to heartbeats
10. It is the region of low pressure in longitudinal wave
Down
1. Apparatus used to find the depth of the sea
2. It converts sound wave frequency into electrical impulses
3. A vibrating simple pendulum produces this type of sound
5. It is the sensation of a frequency
6. Elevation in a transverse waveSolution
Given below are the links of some of the reference books for class 9 science.
These books by S.Chand Publications are detailed in their content and are must have books for class 9 students.You can use above books for extra knowledge and practicing different questions.
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