Quarter+4+Notes+2011

Waves, Sound, Light

For make-up work and smartboard notes, see bottom of this page. Always include **date** you are making up and **name** when you turn in make-up work!

WBL ALC Physics

H. Leslie Grebe

Phone: 651-773-6404

Email: HLGREB@wbl.whitebear.k12.mn.us

Class website: http://wblalcphysics.wikispaces.com/ Online textbook: [] All class notes will be posted to the website for review and study.

School website: [] District website: []

Quarter Credit: For this quarter, course work will consist of: 2 projects 10 pts each 2 test 10 pts each Daily 3 questions 40 pts total (1 pt per day) Participation 20 pts total · In class (approximately on time, still in room when bell rings, only reasonable amounts of time out of the room) · On task (head up, working / participating, not distracting or disrupting others) Other than tests and possibly projects, students //must be present// to earn credit. (Make-up work for //excused// absences will be available on the class website and are to be handed in within a week of returning to class.)
 * <span style="display: block; font-family: 'Times New Roman','serif'; text-align: center;">100 pts || <span style="font-family: 'Times New Roman','serif'; margin: 0in 0in 0pt;">0.5 credits ||
 * <span style="display: block; font-family: 'Times New Roman','serif'; text-align: center;">75 pts || <span style="font-family: 'Times New Roman','serif'; margin: 0in 0in 0pt;">0.375 credits ||
 * <span style="display: block; font-family: 'Times New Roman','serif'; text-align: center;">50 pts || <span style="font-family: 'Times New Roman','serif'; margin: 0in 0in 0pt;">0.25 credits ||
 * <span style="display: block; font-family: 'Times New Roman','serif'; text-align: center;">25 pts || <span style="font-family: 'Times New Roman','serif'; margin: 0in 0in 0pt;">0.125 credits ||

<span style="font-family: 'Arial','sans-serif'; font-size: 14pt; line-height: 150%; margin: 0in 0in 0pt;">Perfect Attendance Bonus: <span style="font-family: 'Times New Roman','serif'; line-height: 150%; margin: 0in 0in 0pt;">Any 13 consecutive school days of attendance is eligible for a 5 point extra credit bonus, up to 3 bonuses per quarter. For multiple bonuses, the 13-day periods cannot overlap.

<span style="font-family: 'Arial','sans-serif'; font-size: 14pt; line-height: 150%; margin: 0in 0in 0pt;">Expectations: <span style="font-family: 'Times New Roman','serif'; line-height: 150%; margin: 0in 0in 0pt;">It is expected that anyone choosing to be in class is working toward our goal of learning enough physics to get credits. Respect is fundamental to helping everyone achieve that goal.

Quarter 4 Class Notes and Make-up Assignments:
Always include **name** and **date of make-up** on any late work turned in.

Test: Sound, Light, Color
 * Friday 6/3**

Make-up work: Show Leslie your 1 page of notes you created for this test to get your point for the day - Jeopardy! Review
 * Thursday 6/2**

//**Per 1 & 2**// - Make-up work: Read section 27.6 (p. 540-541) and answer questions 18, 19a, 19b (p. 549) - Cleaning up a few topics: Beat frequencies, shadows with several colored lights, fuzzy and sharp shadows //**Per 3**// - Make-up work: Read section 27.3 (p. 536) and answer questions 7 & 8 (p. 548) and find the speed of light (p. 547) - Sound vs. Light
 * Wednesday 6/1**

//**Per 1 & 2**// - Make-up work: Read section 28.8-9 (p. 566-569) and answer questions 16, 18, 20 (p. 575) - "Why is the sky blue" shining light through water mixed with milk - "Hunting the Edge of the Universe" segments about telescopes and light //**Per 3**// - Make-up work: Read section 28.11 (p 571-3) and answer questions 22-24 (p. 576) - What do we know about light? - Looking at light split into colors: identifying gases by their spectra
 * Tuesday 5/31**

No school - MEMORIAL DAY
 * Monday 5/30**

//**Per 1 & 2**// - Make-up work: See Leslie for packet to be completed with online simulator - Red + Green = Yellow??? Yes, when adding light, not paint //**Per 3**// - Make-up: Read Section 26.6-7 (p. 520) and answer questions 11, 12, 13 (p. 528) - Sorting pennies by sound - Tuning Forks are labeled with their NATURAL Frequency - Held to the table, they make a forced vibration, like an acoustic guitar's body
 * Thursday 5/26 - Friday 5/27**
 * Friday 5/27**

//**Per 1 & 2**// - Make-up: Go to __<span style="background-color: transparent; color: #0000ee; font-family: serif; font-size: 16px; vertical-align: baseline;">[] __, click on "Myth Results" and summarize how they tested 3 different myths. - Mythbusters: Firearms myths //**Per 3**// - See 5/23
 * Wednesday 5/25**

//**Per 1 & 2**// - Make-up work: Read section 28.2-3 (p. 557-8) and answer questions 3, 4, 6 (p. 575) - Finding the speed of light using chocolate / marshmallows in the microwave - New terms for light: emit, absorb, reflect, transmit //**Per 3**// - Make-up work: Read section 26.4 (p. 518) and answer questions 7-9 (p. 528) <span style="background-color: transparent; color: #000000; font-family: serif; font-size: 16px; text-decoration: none; vertical-align: baseline;">Outside sound lab: <span style="background-color: transparent; color: #000000; font-family: serif; font-size: 16px; text-decoration: none; vertical-align: baseline;">-Speed of sound in air - Listening through solids instead of air
 * Tuesday 5/24**

//**Per 1 & 2**// - Make-up work: Read section 27.3 (p. 536) and answer questions 7 & 8 (p. 548) and find the speed of light (p. 547) - Sound vs. Light
 * Monday 5/23**

//**Per 3**// - **Project**: See Leslie for ideas and equipment
 * 5/23, 5/25, & 5/26**

//**Per 1 & 2**// - Make-up work: Read section 28.11 (p 571-3) and answer questions 22-24 (p. 576) - Looking at our speed of sound data: We got 357 m/s when the answer was 340 m/s -- Awesome work! - What do we know about light? - Looking at light split into colors: identifying gases by their spectra //**Per 3**//- Make-up work: Read Section 25.7 (p. 498-9) and answer questions 12 & 13 (p. 508) - Interference and Moire patterns
 * Friday 5/20**

//**Per 1 & 2**// - Make-up work: Read section 26.4 (p. 518) and answer questions 7-9 (p. 528) Outside sound lab: - Speed of sound in air - Listening through solids instead of air //**Per 3**//- Make-up work: Read Section 25.4 (p. 495-6) and answer questions 9, 10 (p. 508) & 66 (p. 513) - Wave speed = DISTANCE for a wave over TIME for a wave - Wave simulator in computer lab
 * Thursday 5/19**

//**Per 1 & 2**// - Make-up work: Read section 26.1 (p. 515) and answer questions 1-3 (p. 528) - Messing with the oscilloscope - Most standing waves on a spring - Bill Nye Music <span style="background-color: transparent; color: #000000; font-family: serif; font-size: 16px; text-decoration: none; vertical-align: baseline;">//**Per 3 -**// Make-up work: Read Section 26.2 (p. 515-7) and answer questions 5a, 5b, and 6 (p. 528) <span style="background-color: transparent; color: #000000; font-family: serif; font-size: 16px; text-decoration: none; vertical-align: baseline;">- Amplitude = how high, Wavelength = how long <span style="background-color: transparent; color: #000000; font-family: serif; font-size: 16px; text-decoration: none; vertical-align: baseline;">- Spray can on a spring
 * Wednesday 5/18**
 * FIELD TRIP DAY: Exploradome Zoom! Program**

<span style="background-color: transparent; color: #000000; font-family: serif; font-size: 16px; text-decoration: none; vertical-align: baseline;">- What does amplitude do to wavelength?

//**All periods**// - Make-up work: Read section 25.1 (p. 491) and answer questions 1-3 (p. 508) - Races on the swings outside: What gets the fastest 10 swings?
 * Tuesday 5/17**

//**All periods**// Make-up: Go to __<span style="background-color: transparent; color: #0000ee; font-family: serif; font-size: 16px; vertical-align: baseline;">[] __, click on "Myth Results" and summarize how they tested 3 different myths. - Mythbusters: Pirate myth special
 * Monday 5/16**

//**Per 1 & 2**// - Make-up work: Get the sink packet from Leslie and complete it online. - Waves in an electric sink - computer lab - Special ops teams practiced "Johnny Sound" exercise //**Per 3**// - Make-up: Read Section 25.3 (493-494), and answer question 8 (p. 508) and 26 (both parts) on p. 510 - Making up problems about frequency and period - Doing "the wave" (or "the pulse," as it should be called) - Vibrations travel without taking the medium with it
 * Friday 5/13**

//**Per 1 & 2**// - Make-up work: Read Section 25.7 (p. 498-9) and 25.9 (p. 501-3), then answer questions 21, 22, (p. 509), and 45 (p. 511) - Pendulum waves youtube and 3, 4, 5 demos of interference - Sound worksheet //**Per 3**// - Make-up work: N/A - Career Day - NO CLASS!
 * Thursday 5/12**

//**Per 1 & 2**// - Make-up work: Read Section 26.9 (p. 522-3) and answer questions 18, 19 (p. 528), and 43 (p. 530) - Interference for SOUND - In phase means the waves peak and bottom at the same spots, so extra loud - Out of phase means the waves peak and bottom at OPPOSITE spots, so they cancel - Demo with out of phase speakers canceling - Demo with loud and quiet spots around the room //**Per 3**// - Make-up: Go to [], click on "Myth Results" and summarize how they tested 3 different myths. - Mythbusters: Brown note, blown away, water torture
 * Wednesday 5/11**

- Mythbusters: Earthquake Machine, Exploding Lava Lamp - Frequency and Period - Bell ringing without air? - Sound is a wave that travels through a medium!
 * Tuesday 5/10**
 * //Per 1 & 2//** - Make-up: Go to [], click on "Myth Results" and summarize how they tested 3 different myths.
 * //Period 3 (10:00)//** - Make-up:Read Section 25.2 (p. 491-3) and answer questions 5, 6, 7 (p. 508)

//**Per 1 & 2**// - Make-up work: Use the internet or reference books to find out what the difference is between pitch, intensity, and timbre. Write down your information source and your answers. - Messed around with musical instruments - Three categories of sound changes: Pitch, Intensity, and Timbre - Three categories of instruments: Strings, Wind, and Percussion //**Period 3 (10:00)**// - See Monday April 11 for class notes (Make-up work not applicable)
 * Monday 5/9**

Test on Sound and Waves
 * Friday 5/6**

Jeopardy! to review for test
 * Thursday 5/5**

Make-up: Read Section 26.8 (p. 521-2) and answer questions 15, 16, 17 (p. 528) - RESONANCE is when force is added at an object's NATURAL Frequency causing BIG vibrations - Examples, two identical tuning forks, kid on a swing, suspension bridge, car on an air track. Then we thought up more!
 * Wednesday 5/4**

Make-up: Read Section 26.6-7 (p. 520) and answer questions 11, 12, 13 (p. 528) - Sorting pennies by sound - Tuning Forks are labeled with their NATURAL Frequency - Held to the table, they make a forced vibration, like an acoustic guitar's body
 * Tuesday 5/3**

Make-up work: Go to [], click on "Myth Results" and summarize how they tested 3 different myths. - Mythbusters: Bullet-proof water, Swing 360
 * Monday 5/2**

Make-up: Read Section 25.9 (p. 501-3) and answer questions 15, 16 (p. 508) & 46 (p. 511) - Drawing what we see with drops in pan of water on the overhead - Simulators of the Doppler effect - Trying it with a bike in the hallway
 * Friday 4/29**

Vee Chart Project: See Leslie for ideas and format
 * Tuesday 4/26 - Thursday 4/28**

Make-up work: Go to [], click on "Myth Results" and summarize how they tested 3 different myths. - Mythbusters: Brown Note, Blown Away, Chinese Water Torture
 * Monday 4/25**

NO SCHOOL!!!
 * Friday 4/22**

Make-up: Read Section 25.8 (p. 500-1) and answer questions 14 (p. 508), 39 & 40 (p. 511) - Finished wave simulator in computer lab - Standing waves: Interference makes it look like they are standing still! - Made and measured some standing waves on springs
 * Thursday 4/21**

Make-up: Read Section 25.4 (p. 495-6) and answer questions 9, 10 (p. 508) & 66 (p. 513) - Last Concept for sheet: Wave speed = DISTANCE for a wave over TIME for a wave - Wave simulator in computer lab
 * Wednesday 4/20**

Make-up: Read Section 25.7 (p. 498-9) and answer questions 12 & 13 (p. 508) - Checking out our data from Friday: Amplitude doesn't affect speed - Interference, Moire patterns, waves add when they meet
 * Tuesday 4/19**

Make-up work: Go to [], click on "Myth Results" and summarize how they tested 3 different myths. - Mythbusters: Singer breaking glass, no moss on a rolling stone?, vacuum cleaner jet engine
 * Monday 4/18**

Make-up: Read Section 26.2 (p. 515-7) and answer questions 5a, 5b, and 6 (p. 528) - Amplitude = how high, Wavelength = how long - Pulses on a spring - What does amplitude do to wavelength? What does frequency do to wavelength?
 * Friday 4/15**

Make-up: Read Section 25.3 (493-494), 25.5 & 25.6 (p. 497) and answer questions 3, 8, 11 (p. 528) - Doing "the wave" (or "the pulse," as it should be called) - Vibrations travel without taking the medium with it - Transverse = across, Longitudinal = along
 * Thursday 4/14**

Make-up: Read Section 25.2 (p. 491-3) and answer questions 26 (both parts) and 27 (p. 510) - Starting our organizer - Making up problems about frequency and period
 * Wednesday 4/13**

Make-up: Read Section 25.2 (p. 491-3) and answer questions 5, 6, 7 (p. 508) - Frequency and Period - Bell ringing without air? - Sound is a wave that travels through a medium!
 * Tuesday 4/12**

Make-up work: N/A - Getting to Know You - Going Over Syllabus and Textbook - Frequency: how often?
 * Monday 4/11**

Quarter 3 Class Notes Quarter 2 Class Notes Quarter 1 Class Notes