Mr. Z’s “Waves” Unit - PowerPoint PPT Presentation

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Mr. Z’s “Waves” Unit

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  1. Mr. Z’s “Waves” Unit

  2. Mr. Z about to catch some “Air”

  3. Mr. Z’s “Riding One Home!”

  4. AIM:What are features of waves? Objectives Identify the features of a wave

  5. AIM:What are features of waves? Vocabulary Amplitude, frequency, hertz, wavelength, wave speed

  6. AIM:What are features of waves? Quick Review! What is a wave? An energy disturbance traveling place to place What are the two types of waves we are studying Transverse and longitudinal ,

  7. AIM:What are features of waves? Quick Review! The two types of mechanical waves: Transverse Longitudinal

  8. AIM:What are features of waves? • TRANSVERSE WAVES • EXAMPLE: “waves made with the rope” • EXAMPLE: “water waves”

  9. AIM:What are features of waves? • TRANSVERSE WAVES • The particles of the medium typically move perpendicular to the movement of the wave!

  10. AIM:What are features of waves? • TRANSVERSE WAVES • The particles of the medium typically move perpendicular to the movement of the wave!

  11. AIM:What are features of waves? • LONGITUDINAL WAVES • The particles of the medium typically move parallel to the movement of the wave!

  12. AIM:What are features of waves? Quick Review • Draw a transverse wave on the board • Identify CRESTS and TROUGHS • 15-1 Transparency 57: Transverse Wave

  13. AIM:What are features of waves? Draw and label crest and trough .

  14. AIM:What are features of waves? Draw and label the crest and trough

  15. AIM:What are features of waves? The highest point of the wave? the crest. lowest point is called ? the trough.

  16. AIM:What are features of waves? Waves can be characterized in terms of three basic features 1. Amplitude 2. Wavelength 3. Frequency

  17. AIM:What are features of waves? Amplitude Height of the wave. Distance between the the crest and the “normal” position

  18. You Draw ! Draw three waves: The first will have a 1 cm amplitude, the second will have a 2 cm amplitude, and the third will have an amplitude of 3 cm.

  19. AIM:What are features of waves?

  20. AIM:What are features of waves? Draw and label the crest and trough and amplitude..

  21. AIM:What are features of waves? Amplitude Draw and label the crest and trough and amplitude..

  22. AIM:What are features of waves? Amplitude Draw and label the crest and trough and amplitude..

  23. AIM:What are features of waves? Amplitude Draw and label the crest and trough and amplitude..

  24. AIM:What are features of waves? Amplitude Are all the Amplitudes on the same wave identical? YES THEY HAVE TO BE!

  25. AIM:What are features of waves? wavelength

  26. AIM:What are features of waves? Wavelength The distance between the crest of one wave and the crest of the next wave.

  27. AIM:What are features of waves? Wavelength How else could you define wavelength? The distance between the trough of one wave and the trough of the next wave.

  28. AIM:What are features of waves? Draw and label the wavelength, crest and trough.

  29. AIM:What are features of waves? wavelength Draw and label the wavelength, crest and trough

  30. AIM:What are features of waves? wavelength Draw and label the wavelength, crest and trough

  31. wavelength Are both wavelengths the same ? Yes! All wavelengths on the same wave are the same length

  32. AIM:What are features of waves? Lets Review:

  33. AIM:What are features of waves? Crest Label the Crest, Trough, Amplitude, rest position, & wavelength of this transverse wave Trough

  34. AIM:What are features of waves? Crest Label the Crest, Trough, Amplitude, rest position, & wavelength of this transverse wave Trough

  35. Label the Crest, Trough, Amplitude, rest position, & wavelength of this transverse wave Crest Trough

  36. Label the Crest, Trough, Amplitude, rest position, & wavelength of this transverse wave Crest Trough

  37. Label the Crest, Trough, Amplitude, rest position, & wavelength of this transverse wave Crest Trough

  38. AIM:What are features of waves?

  39. AIM:What are features of waves? Longitudinal Features

  40. QUICK REVIEW: Longitudinal Wave Where are the compressions ?

  41. QUICK REVIEW of Longitudinal Wave Where are the rarefactions ?

  42. What is the wavelength of this Longitudinal Wave?

  43. AIM:What are features of waves? What is Frequency The number of “compete wave cycles” that pass a certain point in a given amount of time. Usually measured in the number of complete waves per second

  44. Don’t confuse wavelength with a complete wave cycle !!!!!!! Definition: The number of complete wave cycles that pass a given point in one second is the wave's frequency.

  45. “What is a complete wave cycle?”

  46. A complete wave cycle is measured as “from one crest (or trough) to the next” AND Crest

  47. How many of those cycles pass by in a one second interval of time Crest