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Scarlett Middle School

Mechanical Wave Propagation (MWP)

Pace: 5.5 class periods
Checkpoint:  5 March

ESSENTIAL QUESTIONS
  • Why do vibrations in matter initiate mechanical waves (e.g., water waves, sound waves, seismic waves)?
  • Why do waves propagate in all directions and decrease in intensity in proportion to the distance squared for a point source?
  • How do waves transfer energy from one place to another without transferring mass?


STANDARDS COVERED
P4.5A  Identify everyday examples of energy transfer by waves and their sources.
P4.5B  Explain why an object (e.g., fishing bobber) does not move forward as a wave passes under it.
P4.5C  Provide evidence to support the claim that sound is energy transferred by a wave, not energy transferred by particles.
4.5D Explain how waves propagate from vibrating sources and why the intensity decreases with the square of the distance from a point source.
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.
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. 
Wave Propagation INtroduction
Chapter Textbook and Notes
All resources will be linked to the practice

MWP.1 Energy Transfers
25-26 February

MWP.1 Practice

NOTES
Complete Cornell Notes using the Energy Transfer Module. There will be four slides. 
Potential / Chemical Energy
Energy Transfer - Kinetic
Energy Transfer - Light 
Not Enough Energy

PRACTICE
Review Water Waves and/or Wave Intro Video and explain why a fishing bobber does not move forward when a wave passes beneath it in your lab notebook.
Complete the Wave and Energy Transfer Practice page below #1-6 and 10 only. Check with the key
wave_and_energy_transfer.pdf
File Size: 172 kb
File Type: pdf
Download File

MASTERY CHECK
Draw a diagram in your notebook that shows a mechanical wave, the medium it is moving through and how that medium is moving. 
STANDARDS:
4.5A
4.5B
4.5C

BIG IDEA:
Mechanical waves are vibrations in a medium that move from source to receiver, conveying energy.
TERMS TO KNOW FROM Ch 25:
Frequency
Period
Wave
Amplitude
Medium
Vibrations
Source 
Receiver

MWP.2 Sound Waves
27 February

MWP.2 Practice

Please use headphones.

NOTES
Create Cornell Notes or other using the Terms to Know while you watch the Bozeman Science Sound Waves video. Include drawings frequently to help explain terms. Most terms are explained but you might have to use prior knowledge from Chapter 25 for a few.

Turn down the volume before you try part 2.  

Explain what is happening in this video of a Sound Wave Experiment based on your understanding of Sound Waves. Include your discussion at the bottom of your notes.

PRACTICE 
Complete the Sound Waves Practice Page in class and check with the key for corrections. Check in with teacher when complete.
mwp.2.sound_waves.pdf
File Size: 59 kb
File Type: pdf
Download File

MASTERY CHECK
Complete #1-6  CHECK YOUR UNDERSTANDING questions at the bottom of the Physics classroom webpage in your notebook. Be sure to check your answers AFTER you have worked to complete the practice. 

STANDARDS:
4.5C
4.5D
Big Idea:
Sound is energy transferred by a wave, not energy transferred by matter.
Terms to Know:
Mechanical Waves
Longitudinal Waves
Transverse Waves
Frequency = Pitch
Simple Harmonic Motion
Amplitude = Loudness
Harmonic
Hertz (Hz)

MWP.3 Intensity
2-5 March (3 March ACT testing and 4 March 1/2 day)

MWP.3 Practice

NOTES
Create Cornell Notes or other using the Terms to Know while you watch thenewboston Wave Intensity video. Include drawings frequently to help explain terms. Most terms are explained but you might have to use prior knowledge from Chapter 25 for a few.

PRACTICE PAGE
Complete the Sound Intensity Practice Page below in class or at home and check with the key for corrections. Check in with teacher when complete.
mwp.3.sound_intensity.pdf
File Size: 61 kb
File Type: pdf
Download File

MASTERY CHECK
IN your notebook, 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. Use a diagram that include wave diagrams and wave intensity to help explain.
STANDARDS:
4.5D
4.5E

Terms to know:
Frequency
Period
Wave
Amplitude
Intensity
Decibels (dB)
Source
Big Idea: 
Wave intensity decreases with the distance from the source.  

Sound moves in all directions.  

Ch25/MWP.Review

25 Practice Post Test
25 review Video

Ch25/MWP Extra Credit

25.mathpractice.pdf
File Size: 46 kb
File Type: pdf
Download File

25.1-25.6 only
25.exercises.pdf
File Size: 163 kb
File Type: pdf
Download File


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