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Mon Feb 10 1.TEST (earthquakes moved to Sound test) 2.Asst: (a) Guided notes on SOUND 3.Need to turn in All self-check questions ALL Handouts Anything.

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Presentation on theme: "Mon Feb 10 1.TEST (earthquakes moved to Sound test) 2.Asst: (a) Guided notes on SOUND 3.Need to turn in All self-check questions ALL Handouts Anything."— Presentation transcript:

1 Mon Feb 10 1.TEST (earthquakes moved to Sound test) 2.Asst: (a) Guided notes on SOUND 3.Need to turn in All self-check questions ALL Handouts Anything else? IT IS EXTREMELY IMPORTANT YOU ARE IN CLASS (ON TIME) THE NEXT 2 DAYS AS WE START SOUND!!!

2 Tues Feb Any more waves handouts in your binders? Binders due Friday 2.Lecture Notes/demosLecture Notes/demos 3.Asst: Chapter 15 concepts: (listed on ½ sheet) p410 #12-13, p419 #22-23, 28 p424 #32, 34-38, 41, 43-45, 47, 49 Binders due Friday

3 Wed Feb 12 1.Finish Lecture Notes/demosLecture Notes/demos 2.Bill Nye – fill in your lecture notes with anything we missed … 3.Asst: Chapter 15 problems: (listed on ½ sheet) (note – you need #3 of Guided Notes, which says: v sound increases 0.6 m/s per 1ºC, and has some common speeds of sound from p.405) Page 424 #52-59, 60a, 61a, 62, 63a, 65, 74, 77a, 79, 88, 90 Page 429 #1-3, 6 Mythbusters showing glass CAN be broken... Binders due Friday

4 Thurs Feb 13 1.Login immediately; come back and turn in … book concepts / problems - any quick questions about them first?? (we’ll go over all later) Guided notes 2.Finish Bill Nye 3.Out folder.... start Sound CPU’s – speakers should be ON, but NOT too loud! 4.Asst: FRONT = Medical Ultrasound AND BACK = notes on “The Rumble of Destruction” (BOTH due tomorrow; may use wksht front & back on next test IF turned in tomorrow!) Along with Earthquakes HW, and the next 2 days HW as well. Binders due Friday

5 Fri Feb 14 1.Login immediately; come back and turn in … Med Ultrasound & “Rumble” HW questions/notes & reading packets (must be turned in NOW to be able to use on the next unit test!) 2.Quick sound review (see next slide) 3.Work on CPU’s (careful on sound volume!) Did you: (a) your teacher waves docs 2-4 and (b) home both partners Waves excel sheet to print & turn in Tuesday? On sim 3, make sure you know the beats graph & concepts! On simulations 4 & 5, note that FREQUENCY/pitch is constant when the medium changes, and that wavelength and velocity vary directly when the medium changes; and that sound is a mechanical wave, which means???? 4.BINDERS DUE! 5.HW: “Good Vibrations” questions (may use wksht on next test IF turned in Monday!)

6 Tuesday Feb 18 (Mon = Holiday) 1.Binders! … 2.Login immediately; come back and turn in … Acc Eng. HW questions & reading packet (must be turned in NOW to be able to use on the next unit test!) 3.Go over Waves tests!!! –Get out a piece of paper… 4.Work on CPU’s (careful on sound volume!) On sim 3, make sure you know the beats graph & concepts! On simulations 4 & 5, note that FREQUENCY/pitch is constant when the medium changes, and that wavelength and velocity vary directly when the medium changes; and that sound is a mechanical wave, which means???? 5.HW: Acoustical Engineering questions (may use wksht on next test IF turned in tomorrow!)

7 Wed, Feb 19 1.Login immediately; come back and turn in … Good Vib. HW questions & reading packet (must be turned in NOW to be able to use on the next unit test!) 2.Last Day on CPU Sims - Read new Handout!!! 3.Asst (A): go back & fill in all the rest of the CPU worksheet 4.Asst (B) Do “redos” of following book problems: –Page #82 and 93 (from ch14, w/ “parts” of wave given) –Page 425 #53-56, 65, 74 5.Asst (C) EXTRA CREDIT IF parts A & B are done: Find one really cool sound or light clip on internet. your teacher your name, period, the URL, AND a description in the of what the clip is AND how it relates to: Ca State Physics Standard 4f. Students know how to identify the characteristic properties of waves: interference, beats, diffraction, refraction, reflection, Doppler effect, and polarization. (Note that yours cannot be the same as another student’s to get the extra credit!) 6.HW Thursday night: (a) Review wksht (b) Print off Study Guide

8 Thurs Feb 20 1.Movie – Hearing (take notes on blank sheet of paper) 2.Resonance & Speed of Sound Minilab (data & analysis) 3.HW Thursday night: (a) Review wksht (b) Print off Study Guide HW From Wednesday was: Asst (A): go back & fill in all the rest of the CPU worksheet Asst (B) Do “redos” of following book problems: –Page #82 and 93 (from ch14, w/ “parts” of wave given) –Page 425 #53-56, 65, 74 Asst (C) EXTRA CREDIT IF parts A & B are done: Find one really cool sound or light clip on internet. your teacher your name, period, the URL, AND a description in the of what the clip is AND how it relates to: Ca State Physics Standard 4f. Students know how to identify the characteristic properties of waves: interference, beats, diffraction, refraction, reflection, Doppler effect, and polarization. (Note that yours cannot be the same as another student’s to get the extra credit!) Redos Page #82 and 93 ANSWERS: 82: 3.6 m/s; 93: 0.72 sec, 1.4 Hz Test Monday!

9 Fri Feb 21 ***If you were absent/late: I must have any Earthquakes, Acc Eng, Med Ultra/Rumble, and Hearing HW TODAY for you to be able to use it on the test! 1.Go over: Review Wrksht Book Problems (CONCEPTS; questions on prob’s first time & redos) CPU wrksht Guided Notes 2.Look at some Video clips if time 3.Asst: study for test!! Read Study Guide!! Study Lecture Notes & Essay questions Review wrksht, Bk Concepts & problems Guided Book Notes, CPU sims Redos Page #82 and 93 ANSWERS: 82: 3.6 m/s; 93: 0.72 sec, 1.4 Hz Test Monday! Copy both days!

10 sound is a wave + waves concepts it is a longitudinal or pressure wave (“longitudinal” means “parallel” to direction of wave) with compressions & rarefactions (like a bunched slinky) it is produced by a vibrating object what specifically produces sound in voice & certain instruments (Examples: vocal cords, lips, reed, etc) it is a mechanical wave (needs a medium - no sound in a “vacuum” / outer space) sound travels fastest in solids, then liquids, then gasses –(but slower in more dense gasses!) sound is slower than light (always!) “pitch” means frequency, other frequency words (tone, note, etc) “loudness” means amplitude/energy … measured in decibels, which is not a linear scale “echo” means reflection how length of tuning fork dictates pitch (determines length of standing wave that fits, & thus frequency), –slide trombone, pipe organs, etc sound also diffracts & refracts (rules?) timbre/consonance/dissonance – define ear is human detector of sound; 3 parts (x2 subparts), what each part does, damage to little hair cells that causes hearing loss Doppler shift: –when higher pitch –when lower pitch –pitch doing really –can use to determine speed of moving source (there’s a formula) –(radar, stars moving away = redshift) Resonance & natural frequency –examples (tuning forks & pith ball, wine glass & opera singer, marchers across bridge, Revolution at Great America, swings, Tacoma Narrows Bridge, bee and pollen in flower) Beats: –caused by 2 frequencies close together –but effect in loudness/amplitude –hear loud-soft “wobbling” –subtract to get beat frequency –Wa or Waaaaahhhh closer tuned?

11 Mon Feb 24th 1.Sound test ***(may use Earthquakes notes, Acc Eng wrksht, Med Ultrasound wrksht (& Rumble notes), Good Vibrations wrksht – for the back page of the test only) Turn your work packet back in after the test! 2.Asst: regular notes pages (write page numbers of each page before you take the notes for that page; there is no wrksht for this)


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