Page 145 - Primary Six Notes

25. Explain the term echo

26. Why are echoes produced?

27. How are echoes useful to human beings?

28. State any one danger of echoes in our environment

29. Why are walls and ceilings of cinema halls fitted with soft boards?

30. Which term refers to the highness or lowness of sound?

31. Mention one factor that determines the pitch of sound.

32. How can you change the pitch of sound of a string instrument

33. State the two ways of storing sound

34. Mention any one way of reproducing

35. How is hearing in snakes different from hearing in man?

36. State the function of the pinna

37. Apart from hearing, give any one other function of the ear.

1 38. State two ways of caring to the human ear
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39. In a sentence, give a difference between a partial and sensory
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40. State how partial deafness can be corrected
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