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Name the waves used for sound ranging. S...

Name the waves used for sound ranging. State one reason for their use. Why are the waves mentioned by you not audible to us?

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ICSE-SOUND-EXERCISE -7(A)
  1. What are mechanical waves ?

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  2. Define the following terms in relation to a wave : amplitude

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  3. Define the following terms in relation to a wave : frequency

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  4. Define the following terms in relation to a wave : wavelength

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  5. Define the following terms in relation to a wave : wave velocity.

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  6. A wave passes from one medium to another medium. Mention one property ...

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  7. A wave passes from one medium to another medium. Mention one property ...

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  8. State two factors on which the speed of a wave travelling in a medium ...

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  9. State two differences between light and sound waves.

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  10. What do you mean by reflection of sound ? State one condition for the ...

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  11. What is meant by an echo ? State two conditions necessary for an echo ...

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  12. A man is standing at a distance of 12 m from a cliff. Will he be able ...

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  13. State two applications of echo.

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  14. Explain how the speed of sound can be determined by the method of echo...

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  15. State the use of echo by a bat, dolphin and fisherman.

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  16. How do bats avoid obstacles in their way, when in flight?

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  17. What is meant by sound ranging ? Give one use of sound ranging,

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  18. Name the waves used for sound ranging. State one reason for their use....

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  19. What is the principle on which SONAR is based ?

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  20. State the use of echo in medical field.

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