1. The distance from the middle of one compression to the middle of the next

2. Wavelength

3. The sound of a large bell is (lower/higher) than the sound of a small bell

4. LOWER Bigger bell vibrates slower = lower pitch

5. place where the air molecules are pressed together

6. compression

7. Percussion instruments played by ______________

8. HITTING

9. between the compressions, the molecules spread apart

10. Rarefaction/expansion

11. To move rapidly back and forth

12. vibrate

13. The pitch will be lower if the tension of the string (increases/decreases)

14. DECREASE If the string is looser(decrease in tension), it will vibrate slower = lower pitch

15. how high or low sound,

16. pitch

17. A wave that carries sound energy

18. Longitudinal Wave

19. A material through which a wave travels

20. medium

21. Long strings have (higher/lower) pitch than short ones

22. LOWER Longer strings vibrate slower = lower pitch

23. Unit of measure for loudness of sound

24. DECIBELS

25. The distance that a vibrating object moves as it vibrates

26. amplitude

27. the number of vibrations(sound waves) per second

28. Wave Frequency

29. form of energy produced by a vibrating object

30. sound

31. low pitch means _______frequency

32. low

33. the height of the sound wave

34. amplitude

35. Sound energy travels (inward or outward) from a vibrating object

36. outward

37. Sound travels faster through ________ (solid, liquid, or gas)

38. solid

39. Height or distance of a sound wave

40. amplitude

41. Opposite of compression

42. rarefaction

43. A measurement of the loudness of sound

44. DECIBEL

45. The higher the amplitude, the ________ the sound

46. louder

47. sound waves are ________ waves

48. longitudinal

49. How high or low a sound is

50. pitch

51. The more energy you put into an instrument, the _________ the sound

52. louder

53. Low frequency, ________ pitch

54. low

55. Sound is made when something ___________

56. vibrates

57. How many wavelengths?

58. 3

59. Which diagram has a higher pitch?

60. The diagram on the left – if has a higher frequency (more wavelengths per second)

61. Which if louder?

62. The diagram on the right has a higher amplitude which means it has a louder sound.

63. Write what type of wave – blue and red waves

64. Label the parts of the waves Wavelength Crest