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Unit 4 Schedule
2013-2014
The following schedule information was prepared at the beginning of the
unit. It is not fixed
in stone. It's
role is to serve as an organizational tool for
students to find both required and helpful resources relevant to daily
activities. The schedule is seldom updated as the unit progresses; if
we fall behind, then topics or depth of topics will be reduced in order
to keep the overall pace required to maximize coverage of the entire
curriculum.
Day "0.5": Friday, October 11
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Lesson
Plan:
- Any Unit 3 MOP Codes?
- Discuss Interference; demonstrations, web animations, pp. 9-10 of Packet
- Begin unit on Sound: Discuss sound as a mechanical, longitudinal, pressure
wave created by a vibrating object with a frequency between 25 Hz and
20000 Hz
- Finish Lab WM6 - Vibrating Spring Lab
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Homework:
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Announcements:
- We will be focusing on the physics of sound
waves and music through the month of October. Tricks learned in Unit 3 will be applied in Unit 4.
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Online
Help:
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| Day --: Monday, October 14 |
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Lesson
Plan:
- Collect MOP Codes (last chance)
- Collect Lab Notebooks (Labs W4, W5, W6)
- Discuss sound as a mechanical, longitudinal, pressure
wave created by a vibrating object with a frequency between 25 Hz and
20000 Hz
- Review the Nature of Sound (p. 1)
- Unit 3 Quest
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Homework:
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Announcements:
- Read Lesson 1 of Sound
Chapter (TPC); do page 1 of Unit 4 Packet
- Complete Lab W6 (to be collected)
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Online
Help:
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| Day 2: Tuesday, October 15 |
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Lesson
Plan:
- Check p. 1 of Packet
- Discuss sound production
and propagation - relation between dimensions of instrument and
wavelength and frequency; demos
- Sound
properties: frequency, relation to pitch, human range of hearing; speed, variables
effecting speed; intensity and relation to distance; p. 2
- Get quantitative about the speed of sound: v=d/t and v =f•lambda and vair = 331 + 0.60*T; do p. 3 (selected Qs)
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Homework:
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Announcements:
- Stay on top of your reading on the physics of sound waves and music. Stay on top of your MOPs.
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Online
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Day 3: Wednesday, October 16
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Lesson
Plan:
Late Arrival - Shortened Periods (35 minutes)
- Introduction to deciBel
system using CRS passage
- Discuss deciBel system using page 5 of Packet, #1-3
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Homework:
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Announcements:
- Unit 4 MOP assignments that are assigned in quarter 1 will be
collected near the end of quarter 1 (even though the unit is not over).
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Online
Help:
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Day 4: Thursday, October 17
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Lesson
Plan:
- Review deciBel System;
laser disc segment; demo with deciBel meter; discuss inverse square law- relate I to R and I to dB; complete p. 6 of packet
- Do some sample calculations of I and dB using
equation.
- Introduce the Doppler Effect; laser disc segments
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Homework:
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Announcements:
- Unit 4 MOP assignments that are assigned in quarter 1 will be collected
near the end of quarter 1 (even though the unit is not over).
- There will be a Unit 4 Quest at the end of teh quarter.
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Online
Help:
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Day 5: Friday, October 18
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Lesson
Plan:
- Review Doppler effect; do p. 4
- There will be a lecture/demonstration involving three concepts: natural frequency,
forced vibration and resonance. Demonstrations include:
- Natural frequency -
tuning fork, pendulum bob
- Forced vibration and
amplification: tuning fork on whiteboard, cabinet glass, table, sound
box, and ... mouth
- Forced vibration:
inverted pendulum, dual tuning forks
- Resonance: water
goblet, pop bottle, slip stick friction on singing Al rod, plastic straw
- Resonance and Standing
Waves: Chaldni patterns, lab pole, singing rods
- Palm pipe music (maybe)
- All time favorite:
psychic resonance
- Guidance
through selected Qs on pp. 7-8 of Packet
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Homework:
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Announcements:
- Unit 4 MOP assignments that are assigned in quarter 1 will be collected
near the end of quarter 1 (even though the unit is not over).
- There will be a Unit 4 Quest at the end of teh quarter.
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Online
Help:
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| Day 6: Monday, October 21 |
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Lesson
Plan:
- Mathematics of Guitar Strings: speed on strings equation; review standing wave patterns; pp. 9-10, Q#1-4
- Lab Test (due at end of the period)
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Homework:
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Announcements:
- Unit 4 MOP assignments that are assigned in quarter 1 will be collected
near the end of quarter 1 (even though the unit is not over).
- There will be a Unit 4 Quest at the end of teh quarter.
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Online
Help:
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| Day 7: Tuesday, October 22 |
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Lesson
Plan:
- Review resonance in strings (p. 9); discuss
problem-solving schematic; do selected Qs (e.g., #5, 6, 8 on p. 10)
- Discuss
closed-end air columns; demonstrations; develop mathematics on pp. 13-14, Q#1-6
- Do Lab S4 - Closed End
air column lab (collect data, discuss end-effect corrections, pool speed values)
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Homework:
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Announcements:
- The links below offer some excellent help
understanding resonance and the physics of musical instruments.
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Online
Help:
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| Day 8: Wednesday, October 23 |
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Lesson
Plan:
- Analysis of String Instruments: pp. 15-16
- Discuss Closed End Air Columns; review problem-solving schematic; discuss v equation for
speed of sound in air; complete pp. 13-14
- Complete Lab S4
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Homework:
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Announcements:
- Work on your MOP to get the concepts;
the conceptual understanding will be the basis for your problem-solving.\
- MOPs will be collected this Friday. A Quest will be given this Friday.
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Online
Help:
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| Day 9: Thursday, October 24 |
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Lesson
Plan:
- Any MOP Codes?
- Review Closed End Air Columns and problem-solving schematic; discuss v equation for
speed of sound in air; do a p. 14 and/or a p. 17 problem
- Discuss
Open-end air columns; do diagramming and Q#1-5 on p. 11 of packet
- Do Lab S5
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Homework:
- MOP Codes will be collected (SM1-7 and SM10-11)
- Read/study Lesson 5 of Sound
Chapter (TPC)
- There will be a Unit 4 Quest tomorrow (~50 points)
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Announcements:
- MOPs will be collected tomorrow.
- A Quest will be given tomorrow.
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Online
Help:
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| Day 10: Friday, October 25 |
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Lesson
Plan:
- Hand in MOP Codes
- Review Open-end air columns and
problem-solving schematic; do selected Qs on p. 12 and pp. 17+
- Unit 4 Quest (~50 points)
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Homework:
- Do MOP:
assignment SM8-SM9
- Do WebAssign: Physics of Air Columns #1
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Announcements:
- Course notebooks will be handed in on Tuesday,
February 5.
- There is a Quest on Tuesday, February 5. Visit The
Quiz Room.
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Online
Help:
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| Day 11: Monday, October 28 |
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Lesson
Plan:
- Return MOP Code sheet; any MOP Codes: SM8-SM9?
- Air Column Resonance: do selected problems from
pp. 16+
- Lab S8 - Musical
Intervals Lab
- Post-lab S8; investigate the
1.0595n rule of musical notes
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Homework:
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Announcements:
- Tomorrow is the last day of the unit. We will start Unit 5 on Wednesday.
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Online
Help:
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Day 12: Tuesday, October 29
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Lesson
Plan:
- Any MOP Codes - SM8, SM9?
- Lab S10 - Timbre Lab
- Discuss beats;
demonstration; online animation
- Do Lab S11: Who Can Hear Monte Tone
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Homework:
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Announcements:
- We will start Unit 5 tomorrow.
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Online
Help:
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