Waves

 

Day 1: Periodic Motion 1:
Curriculum Objectives Met:
2.   Give examples of periodic motion.

Day 2: Periodic Motion 2:
Curriculum Objectives Met:
1.   Define: periodic motion, frequency, and period.
2.   Give examples of periodic motion.
3.   Apply correct units for period and frequency in problem solving and applications.
15. Explain that the frequency of a wave depends on the source which produced it.

Day 3 & 4: Wave Types and Terminology.
Curriculum Objectives Met:
1.   Define: wave, disturbance, medium, pulse, vibration, cycle, simple harmonic motion, transverse vibration, longitudinal vibration, crest, trough, compression, rarefaction, amplitude, phase, and wavelength.
2.   Give examples of periodic motion
.
3.   Apply correct units for period and frequency in problem solving and applications.
4.   Solve problems involving period, frequency, and wave motion.
5.   Explain that the universal wave equation applies to all types of waves.
6.   Apply the universal wave equation to various types of problems relating to waves.
11. Define: medium
15. Explain that the frequency of a wave depends on the source which produced it.
21. Demonstrate an understanding of wave transmission by relating these phenomena to practical and common experiences.
25. Explain that the speed of waves depends on the frequency in a dispersive medium.  

Day 5 & 6: Principles of Superposition.
Curriculum Objectives Met: 
7.   Define: interference, constructive interference, destructive interference.
8.   State the Principle of Superposition.
9.   Predict the resulting wave pattern when two waves meet when traveling in opposite directions.
10. Illustrate constructive and destructive interference using diagrams, models, or computers.
24. Define: diffraction, phase, nodal lines (nodes), antinodes (loops).
27. Explain that nodal points are located one-half of the wavelength of the interfering waves from one another.
28. Explain standing wave interference patterns by relating them to an understanding of constructive and destructive interference.
 

Day 7: The Medium
Curriculum Objectives Met: 
11. Define: medium.
12. Explain that waves travel at a constant speed in a uniform medium.
13. Explain that a change in medium or a change in the condition of a medium will usually result in a change in the speed of a wave passing through that medium.
14. Suggest how the condition of a particular medium could be changed.
15. Explain that the frequency of a wave depends on the source which produced it.
16. Describe changes in wavelength and speed when waves travel from one medium to another.
18. Explain the relationship between frequency and wavelength for waves in a fixed medium undergoing a change in frequency.
 

Day 8 & 9: Reflection
Curriculum Objectives Met:
11. Define: fixed-end reflection, free-end reflection, partial reflection, boundary, angle of incidence, angle of reflection, normal, barrier, refraction.
19. State the laws of reflection.
20. Explain how the laws of reflection apply to straight water waves reflecting from a straight barrier.
21. Demonstrate an understanding of wave reflection by relating these phenomena to practical and common experiences.
29. Explain that the fixed ends of a one dimensional standing wave pattern must always be nodal points.

Day 10 & 11: Refraction
Curriculum Objectives Met:
11. Define: boundary, angle of incidence, normal, barrier, parabolic reflector, refraction.
17. Explain the relationship between speed and wavelength for periodic waves experiencing refraction.
21. Demonstrate an understanding of wave refraction by relating these phenomena to practical and common experiences.
22. Interpret the relationship between speed and wavelength for waves undergoing refraction.
23. Apply problem solving techniques to the relationship between speed and wavelength for waves undergoing refraction. 

Day 12: Loose Ends
Curriculum Objectives Met:
24. Define: standing wave pattern, resonant frequency, dispersion, dispersive medium, phase delay.
26. Describe the two conditions that would lead to a maximization of the degree of diffraction experienced by waves.
24. Define: standing wave pattern, resonant frequency, dispersion, dispersive medium, phase delay.
31. Explain that waves exhibit other properties such as scattering and polarization.

Unit Challenge: The Stroboscope
Curriculum Objectives Met:
11. Define: Stroboscope

 

Moved to the Light Unit
11. Define: parabolic reflector (curved mirrors)

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