## Slides / *Ngā Kirita*^{🔗}

- Wave Basics (Slides)
- Doppler Effect (Slides)
- Beats (Slides)
- Standing Waves (Slides)
- Interference (Slides)
- Diffraction Gratings (Slides)

## Learning Outcomes */ Ngā Whāinga Ako*

- Demonstrate the appropriate use of significant figures
- Use $v=f \lambda$ and $f = \frac{1}{T}$ to calculate the wavelength, time period, frequency and velocity of a wave
- Explain the Doppler effect
- Calculate the value of the Doppler frequency shift
- Explain the modes of resonance of a string in terms of the fundamental vibration and the harmonics
- Calculate the harmonic frequencies of a string
- Explain the modes of resonance in open and closed pipes in terms of the fundamental vibration and the harmonics
- Calculate the harmonic frequencies in open and closed pipes
- Explain the nature of beats as a special case of interference
- Calculate the beat frequency
- Explain the interference of two wave patterns in terms of nodes, anti-nodes and path difference
- Use $\lambda = \frac{dx}{L}$ to solve problems with a diffraction grating
- Use $n\lambda = dsin(\theta)$ to analyse the spectrum angles produced by a diffraction grating

## Mahi Kāinga

- Term 3, Week 1 (Fri July 25th): Wave Fundamentals Question 1 & 2
- Term 3, Week 2 (Mon July 27th): Doppler Question 9
- Term 3, Week 3 (Mon July 3rd): Doppler Question 8
- Term 3, Week 6 (Mon August 24th):
- Term 3, Week 7 (Mon August 31st):
- Term 3, Week 8 (Mon Sept 7th):
- Term 3, Week 9 (Mon Sept 14th): Interference Q18, Q19

## Unit Plan */ Mahere Kōwae*

Akoranga 1 (Mon) | Akoranga 2 (Tues) | Akoranga 3 (Wed) | Akoranga 4 (Thurs) | |
---|---|---|---|---|

T2 W12 | 1. Intro to Waves | 2. Hand back Test | 3. Intro Continued | 4. Intro Continued |

T3 W1 | 5. Doppler Effect | 6. Doppler Effect | 7. Doppler Effect | 8. Doppler Effect |

T3 W2 | 9. Beats | 10. Beats Whakamātau | 11. Beats | 12. Standing Waves |

T3 W3 | Exam Revision | Exam Revision | Exam Revision | Exam Revision |

T3 W4 | School Exams | School Exams | School Exams | School Exams |

T3 W5 | School Exams | School Exams | Return Exam | 13. Standing Waves & Music |

T3 W6 | 14. Standing Waves & Music | 15. Attitude Presentations | 16. Standing Waves & Music | 17. Standing Waves & Music |

T3 W7 | 18. Interference Pattern (2 Point) | 19. Interference Pattern (2 Point) | 20. Interference Pattern (2 Point) | 21. Multi-Point Interference |

T3 W8 | 22. Multi-Point Interference | 23. Multi-Point Interference | 24. Diffraction Gratings | Revision/Catch-Up |

T3 W9 | Revision/Catch-Up | Revision | Revision | TEST |

### Lesson Plans */ Ngā Mahere Akoranga*

#### Intro to Waves

- Transverse waves & longitudinal waves
- Labelling a wave (peak, trough, wavelength, period)
- Frequency vs period
- Wave equation $v=f\lambda$
- Mechanical vs EM waves
- Quizziz: https://quizizz.com/admin/quiz/start_new/56fc7c19905a99040f5f2ef7

#### Hand back Test

- Hand back previous unit (Electromag) test & revision
- Mahi Tuatahi: Quizlet flashcards & Quizlet Live: https://quizlet.com/83814791/waves-flash-cards/
- Waves Revision Questions #1 Q1

#### Intro Continued 1

- Notes with tauria calculations on using $T = \frac{1}{f}$ and $v=f\lambda$.
- Textbook Activity 5A Q1-5
- Waves Revision Questions #1 Q2
- Physics Worksheet 3.3 Waves Q1-5

#### Intro Continued 2

- Hand out test marking schedule & assign as mahi kāinga over the holidays
- Any material not finished in 3.

#### Intro to the Doppler Effect

- Notes describing the doppler effect & its cause
- Notes explaining the equations that may be used

#### Intro Doppler Equation

- Mahi Tuatahi in notes
- Introduce $f'=f\frac{v_{w}}{v_{w} \pm v_{s}}$
- Tauria and videos in notes
- Textbook exercise

#### Doppler Continued 1

- Textbook exercises & video tauria

#### Doppler Continued 2

- Mahi Kāinga booklet question

#### Beats

- Introduce $f_{b} = | f’ - f |$
- Notes & tauria questions
- Assign mahi kāinga
- Textbook if time

#### Beats Whakamātau

- Mahi Tuatahi in ngā kirita
- Hand out textbook chapter while they’re working
- Write list of missing mahi kāinga up while they’re working

- Whakamātau: confirming $f_{b} = | f’ - f |$
- Worksheet “whakamātau”, Q1 and Q3
- Fast finishers: mahi kāinga booklet Q10

- Mahi Tuatahi in ngā kirita
#### Beats HBQ

- Question 10

#### Standing Waves Intro

#### Diffraction Whakamātau

- “Diffraction of Laser Light” Lab document
- Recap of diffraction gratings notes

#### Diffraction Gratings

- Mahi Kāinga booklet Q20. Work quietly from the start of the class and then go through the question in detail talking about x/y diffraction.