Chapter 26: Sound

Pace: 5 class periods
Checkpoint:  XX March
Essential Questions
  1. P4.5  Mechanical Wave Propagation

    Vibrations in matter initiate mechanical waves (e.g., water waves, sound waves, seismic waves), which may propagate in all directions and decrease in intensity in proportion to the distance squared for a point source.Waves transfer energy from one place to another without transferring mass.

    1. P4.5A  Identify everyday examples of energy transfer by waves and their sources.

    2. P4.5B  Explain why an object (e.g., fishing bobber) does not move forward as a wave passes under it.

    3. P4.5C  Provide evidence to support the claim that sound is energy transferred by a wave, not energy transferred by particles.

    4. P4.5D  Explain how waves propagate from vibrating sources and why the intensity decreases with the square of the distance from a point source.

    5. P4.5E  Explain why everyone in a classroom can hear one person speaking, but why an amplification system is often used in the rear of a large concert auditorium.

    1.  
Standards Covered:
  • P4.4A  Describe specific mechanical waves (e.g., on a demonstration spring, on the ocean) in terms of wavelength, amplitude, frequency, and speed.
  • P4.4B  Identify everyday examples of transverse and compression (longitudinal) waves. 
  • P4.4C  Compare and contrast transverse and compression (longitudinal) waves in terms of wavelength, amplitude, and frequency.
  • 4.4d Demonstrate that frequency and wavelength of a wave are inversely proportional in a given medium. 
  • P4.4e Calculate the amount of energy transferred by transverse or compression waves of different amplitudes and frequencies
PreTest and Differentiation
Pre-test data will be collected and used by the teacher to offer alternative projects to demonstrate mastery. You may also self select for an alternative assignment upon conferencing with your teacher.  Please talk to your teacher if you have any questions. 

Student Examples:
Chapter 25 Textbook and Notes
cpte25.pdf
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ch25.ppt
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File Type: ppt
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25.1 Vibration of a Pendulum
9 -10 February
pg 491

BOOK NOTES
1.  Use the key terms and your text to complete Cornell Notes for this section using your book.  Include diagrams and examples as much as possible. 

VIDEO NOTES
2.  Add to your Cornell Notes using Vibrations and Waves, from Education Portal (expires 8 March) Add details and diagrams to your notes.

LAB
3. Tic-Tock procedures are attached to complete with a partner. Include pictures of set up, video of experiment along with your lab write up.
25.68.tick_tock.lab.pdf
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PRACTICE
4. Complete the Problem Solving Exercises:12-1:Simple Harmonic Motion and check your work using the in-class key when completed.  Skip #5
cpps1201.pdf
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STANDARDS
4.4A

BIG IDEAS
25.1 The period of a pendulum depends only on the length of a pendulum and the acceleration of gravity.

TERMS TO KNOW
Pendulum
Period
Oscillation

25.2 Wave Description
11 February
pg 491-492 

BOOK NOTES
1.  Use the key terms and your text to complete Cornell Notes for this section.  Include diagrams and examples as much as possible. Use Wave Period as you draw examples of your terms to know.

VIDEO NOTES
2.  Add to your Cornell Notes using Wave Parameters: Wavelength, Amplitude, Period, Frequency & Speed, from Education Portal (expires 8 March) Add details and diagrams to your notes.

PRACTICE
3. Complete "Parts of a Wave.doc" practice using the links imbedded in the doc. 
OR 
3. Use the Terms to Know and complete a PREZI that explains each term.  Be sure to include your thoughts regarding the picture below as well.  (Student Prezi example here)
parts_of_a_wave-4.doc
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Review
4. Watch the video and write a one paragraph summary.
MASTERY CHECK 25.1-25.2
5. Complete the in class mastery check. 70% or better move on, below, remediate and retake Mastery Check as soon as possible. 
STANDARDS
4.4A

BIG IDEAS
25.2 The source of all waves in something that vibrates.

Terms to know:
Simple Harmonic Motion
Sine Curve
Trough
Crest
Amplitude
Wavelength
Frequency
Hertz (Hz)

25.3-4 Wave Motion and Speed
12 February
pg 493-496

BOOK NOTES
1.  Use the key terms and your text to complete Cornell Notes for this section.  Include diagrams and examples as much as possible. 

PRACTICE
2. Complete the Concept Development 25-1 #1-8: Vibrations and Waves and check your work using the inclass key when done.  
condev.25.01.pdf
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REVIEW
3. Watch the video and write a one paragraph summary.
STANDARDS
4.4B, 4.4C

BIG IDEAS
25.3 The energy transferred by a wave from a vibrating source to a receiver is carried by a disturbance in a medium.

25.4 You can calculate the speed of a wave by multiplying the wavelength by the frequency. 

Terms to know:
Energy Transfer
Medium
Calculate Wave Speed using the formula: v = (wavelength)f 

25.5-7 Transverse and Longitudinal Waves
13 and 23 February
pg 497

BOOK NOTES
1.  Use the key terms and your text to complete Cornell Notes for this section.  Include diagrams and examples as much as possible. 

VIDEO NOTES
2.  Add to your Cornell Notes using Transverse & Longitudinal Waves from Education Portal (expires 8 March) Add details and diagrams to your notes.

PRACTICE
3. Complete the online practice and take notes and or draw diagrams in your notebook

25.7 WAVE INTERACTION LAB
4. Follow the attached directions to complete.
wave_interactions_lab.doc
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REVIEW
5. Watch the video and write a one paragraph summary.
MASTERY CHECK 25.3-25.6
6. Complete the in class mastery check. 70% or better move on, below, remediate and retake Mastery Check as soon as possible. 
STANDARDS
4.4B, 4.4C

BIG IDEAS
25.5 Waves in the stretched strings of musical instruments and the electromagnetic waves that make up radio waves and light are transverse.

25.6 Sound waves are longitudinal waves. 

Terms to Know:
Transverse Wave
Longitudinal Wave
Inertia
interference pattern
constructive interference
destructive interference
out of phase
in phase

25.Review

cpct25.pdf
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File Type: pdf
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25.Extra Credit

Make something that describes and explains wavelength, amplitude, frequency, hertz and speed.

AND/OR

Explain how are wave velocity, wavelength, and frequency are related in a diagram.