Target Schedule: (2/20/15 – 3/ 5/15)
Grade/Course:
Grade 11/12- AP 1 Physics
UNIT #10: SOUND WAVES
Assessment: 3/5/15
Title of the Unit of Study:
UNIT #10: SOUND WAVES
21st Century Theme: Introduce the topic showing a range of musical instrument and pose the question, “How
come they are all playing the same note at the same frequency, but they sound different- everyone can tell the
difference between a trumpet and a violin ”.
CCSS Science and Technical Standards Reading:
RST.1112.1
Cite specific textual evidence to support analysis of science and technical texts, attending to
important distinctions the author makes and to any gaps or inconsistencies in the account. (HS-PS2-1)
RST.11 2.7
Integrate and evaluate multiple sources of information presented in diverse formats and media
(e.g., quantitative data, video, multimedia) in order to address a question or solve a problem. (HSPS2-1)
CSS Science and Technical Standards Writing:
WHST.1112.9
Draw evidence from informational texts to support analysis, reflection, and research. (HS-PS21),(HS-PS2-5
NGSS/Content Standards: PS4.A: Wave Properties
 The wavelength and frequency of a wave are related to one another by the speed of travel of the wave,
which depends on the type of wave and the medium through which it is passing. (HS-PS4-1)
 [From the 3–5 grade band endpoints] Waves can add or cancel one another as they cross, depending on
their relative phase (i.e., relative position of peaks and troughs of the waves), but they emerge unaffected
by each other. (Boundary: The discussion at this grade level is qualitative only; it can be based on the fact
that two different sounds can pass a location in different directions without getting mixed up.) (HS-PS4-3)
Concepts and Skills:
1. Calculate the energy transmitted by a sound wave and the intensity of the wave measured in a logarithmic
decibel scale.
2. Explain how the motion of either a source or detector of waves results in a frequency change, the Doppler
effect.
3. Calculate the frequency change as function of the relative speed of the source vs the detector
4. Derive expressions for the period and frequency of standing waves in a stringed or wind instrument
5. Explain how the harmonic content of an instrument leads to the timber of a note
6. Calculate the beat frequency between two similar notes
7. Use resonance to measure the speed of sound
Essential Question(s):
1.
2.
3.
4.
What is the physics of wind and stringed instrument work?
What is the Doppler effect and how do you use it to measure the speed of a car or distant galaxy?
How can your ear tell the difference between different musical instruments?
How do you tune a musical instrument?
Higher Order Thinking Questions:
1. Why do we use a logarithmic scale to measure the intensity of sound?
2. Why does the Doppler effect only depend on the relative motion of the observer and the source of the
waves
3. How does an electronic synthesizer work?
4. How does piano tuner use beats to tune an instrument
Target Schedule: (2/20/15 – 3/ 5/15)
Learning Outcomes/Content Objectives:
UNIT #10: SOUND WAVES
Assessment: 3/5/15
1. Determine the speed of sound in air at one atmosphere of pressure at different temperatures.
2. Distinguish between the following terms: pitch, frequency, wavelength, sound intensity, loudness.
3. Determine intensity level in decibels of a sound if the intensity of the sound is given in W/m 2.
4. Explain how a standing wave can be produced in a wind instrument open at both ends or closed at one end
and calculate the frequencies produced by different harmonics of pipes of a given length.
5. Determine the beat frequency produced by two tuning forks of different frequencies.
6. Explain how an interference pattern can be produced by two sources of sound of the same wavelength
separated by a distance d.
7. Solve problems involving two sources for m, d, λ, and the angular separation (θ) when the other quantities
are given.
8. Solve for the frequency of the sound heard by a listener and the wavelength of the sound between a source
and the listener when the frequency of the sound produced by the source and the velocity of both the source and
the listener are given.
9. Explain how a shock wave can be produced and what is meant by the term "sonic boom."
Academic Vocabulary:
-
Content Specific Vocabulary:
- Decibel
- Intensity
- Doppler effect
- Resonance
- Beats
- Timber
Sentence Frames:
The softest sound we can hear
is…….scale of loudness.
The loudest sound we can
tolerate is ….
Police use the Doppler effect to
measure … with…...
Astronomers use the Doppler
effect to measure….
Cardiologists use the Doppler
effect to …….. in a …….
Labs/Demonstrations/Activities:
1. Speed of Sound lab
2. Standing wave demo
3. PHET waves
4. FENDT Java Simulations
Resources:
Web quiz: http://cwx.prenhall.com/bookbind/pubbooks/giancoli/chapter12/deluxe.html
Simulations: http://www.walter-fendt.de/ph14e/ 1. Beats 2. Doppler Efffect
https://phet.colorado.edu/sims/wave-on-a-string/wave-on-a-string_en.html
https://phet.colorado.edu/en/simulation/wave-interference
Video :
https://ia600208.us.archive.org/2/items/AP_Physics_B_Lesson_45/Container.html
https://ia600401.us.archive.org/17/items/AP_Physics_B_Lesson_32/Container.html
https://ia600300.us.archive.org/4/items/AP_Physics_B_Lesson_46/Container.html
https://ia700204.us.archive.org/18/items/AP_Physics_B_Lesson_47/Container.html
Serway Faughn Vuille: College Physics Textbook Chapter 14
Target Schedule: (2/20/15 – 3/ 5/15)
HAIKU PAGE: UNIT #10
UNIT #10: SOUND WAVES
AP1 Physics Unit 10: SOUND WAVES (Chapter 14)
Topic
Reading
1. Sound
SFV p(458-462)
Summary p489
2. EnergyIntensity of Sound
SFV p(463-466)
3. Doppler Effect
SFV p(467-473)
4. Interference of Sound
5. Standing Waves
6. Resonance/ Standing Waves
7. Beats & Timber
8. Speed of Sound Lab
SFV p(473-474)
SFV p(475-479)
SFV p(479- 484)
SFV p(484- 489)
9. Review UNIT #10
Assessment: 3/5/15
Homework
SFV p491: 1-7
SFV p491: 9-19 odd
SFV p492: 21-29 odd
SFV p493: 31,33
SFV p493: 35-41 odd
SFV p491: 57-65 odd
SFV p491: 49-53 odd
Lab Report
SFV p491: 1-19 odd
WEB QUIZ10
10. Test Unit #10
VIDEO LECTURES:
https://ia600208.us.archive.org/2/items/AP_Physics_B_Lesson_45/Container.html
https://ia600401.us.archive.org/17/items/AP_Physics_B_Lesson_32/Container.html
https://ia600300.us.archive.org/4/items/AP_Physics_B_Lesson_46/Container.html
https://ia700204.us.archive.org/18/items/AP_Physics_B_Lesson_47/Container.html
WEB QUIZZ10:
http://cwx.prenhall.com/bookbind/pubbooks/giancoli/chapter12/deluxe.html
In Class Work
Unit Warm Ups
Unit Notes – Focused Notes
Class Participation
Max Score
10
10
10
Score
Target Schedule: (2/20/15 – 3/ 5/15)
UNIT #10: SOUND WAVES
Assessment: 3/5/15