Presentation on theme: "Mon Feb 24th 1.Sound test ***(may use Earthquakes notes, Acc Eng wrksht, Med Ultrasound wrksht (& Rumble notes), Good Vibrations wrksht – for the back."— Presentation transcript:
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)
Tues Feb 25 1.Turn in ….; Binders: sound stuff “OLD”; need ½ sheets, copies, etc … 2.Lecture notes day 1 – LightLight 3.Asst: ch 16 concepts from another book (see handout).... p336 CR 1.2 p342 CR Page 343 RC #1-7, 10-15; AC #1,5,7,10,11,13-15
Wed 2/26 1.You’ve got 2 minutes to finish the chart from yesterday!chart 2.More Lecture notes – through Reflection 3.HW: chapter 16 problems from other book (see back of handout).... Page 344 #2, 3, 4, 7 Page 699 #1-5, 8, #4 about Roemer b) use v = d / t; c) distance = circumference = 2 * pi * r, so use…. v = 2*pi* 1.5 x 10 8 m / time Answers = 4.2 x 10 9 m, 28 km/ sec, 30 km/sec #1 2 nd column: nano means ; answer is WRONG… = 450 nm #8 2 nd column answer = 6 x 10 7 Hz #12-16 we’ll go over later
Thurs 2/27 1.Questions on chapter 16 conc/probs? 2.Bill Nye: (a) Optics – 15 NOTES ; (b) Light & Color – 10 NOTES same sheet, collected end of period For 2 nd video - just need light stuff, not pigment stuff! 3.HW: (a)Make sure Chapter 16 concepts AND problems are all done! (packet collected tomorrow: ch 16 notes, concepts, problems) (b) HW: Guided Notes Reflection & Refraction ON LAST NIGHT’S: #4 about Roemer b) use v = d / t; c) distance = circumference = 2 * pi * r, so use…. v = 2*pi* 1.5 x 10 8 m / time Answers = 4.2 x 10 9 m, 28 km/ sec, 30 km/sec #1 2 nd column: nano means ; answer is WRONG… = 450 nm #8 2 nd column answer = 6 x 10 7 Hz #12-16 we’ll go over later
Fri 2/28 1.Turn in chapter 16 packet: notes, concepts, problems stapled together - in that order. 2.More Lecture notes: (refraction/Snell’s law, rules, coin-in-the-cup, total-internal reflection & critical angles, rainbow) b) HW: reflection/refraction concepts other book wrksht, left column only… RC #1-3, 5-7, 10, 11, 13 AC # 6-10, 14, 15 #7 actually refers to picture (not 17-17!) on page 508 #14 = A prism bends violet light more than red light; explain. #15 = Which color of light travels fastest in glass, red, green, or blue? #8 PROBLEMS answer: v = ; v = 3 x 10 8 m/s so = 6 x 10 7 Hz We’ll go over #12-16 later
Mon 3/3 1.Great America – 3 rd Friday in May, need 1 parent driver for every 4-5 students going; no D’s or excessive tardies may attend – more information coming soon!! 2.Questions on reflect/refract concepts? 3.Lecture notes …. Up to RAINBOW start 4.HW: DO BOTH A&B ON SAME LINED PAPER! (a) Calculate all critical angles for substances listed on top of yesterday’s wksht (almandite, etc) going into air (b) other book worksheet problems: reflection/refraction probs p364 #1-3, 5-10, 16, 17, 20, 21, 27 (columns two & three, to the right of concepts) XC: notes on… How Do 3D Glasses Work.doc black light, fluorescence, etc Vegas Hotel Pool.doc (see webpage) Any 11 th graders who need next-year schedules signed??
Tues 3/4 1.MORE Lecture notes and fun stuff! 2.Optics boxes – discuss & start box A 3.HW a: Finish optics boxes (must show math work on separate sheet) 4.HW b: Worksheet on polarization and color Any 11 th graders who need next-year schedules signed?? XC: notes on… How Do 3D Glasses Work.doc black light, fluorescence, etc Vegas Hotel Pool.doc (see webpage)
Wed 3/5 1.Turn in reflect/refract packet: Guided notes, concepts, problems (+ crit angle) stapled together – in that order. 2.Go over optics boxes 3.Do triangle vs rectangle box (& notes) 4.Refraction with lasers & water data only, no calculations Fiber optics? Laser “patches”? 5.Finish Rainbow 6.H W: Guided Notes - curved mirrors & lenses (ch 17 & 18) Any 11 th graders who need next-year schedules signed?? XC: notes on… How Do 3D Glasses Work.doc black light, fluorescence, etc Vegas Hotel Pool.doc (see webpage)
Triangle versus rectangle (dispersion) If you have an odd-shaped piece of glass (not a parallelogram, but like a prism or a water drop) the angle of final refracted ray that comes out is NOT equal to the angle of the original incident ray that went in. ie: those rays are not parallel. Thus, the light spreads out or “disperses” and we get a rainbow.
Finding “n” of water Each lab table gets 1 laser, 1 sheet of paper, 1 box: Trace the box in the middle of the paper (tape it?) Set the laser light up at about degrees incident to the box (tape it?) Make a small dash mark where the laser light enters the box – incident (and label it “a”) Make a small dash mark where the laser light exits the box when empty (and label it “b”) Fill the box with water Make a small dash mark where the laser light now exits the box with water in it (and label it “c”) Put ALL group members names on paper, and had it to the teacher to make copies for all. If you finish quickly, you may then “play” with the fiber optics cables or the optics filters or the prisms – see your teacher Tomorrow: Draw a line through a-b OUTSIDE the box (incident ray) Draw a line through a-c INSIDE the box (refracted ray) Measure & draw in the normal measure (& write in) incident & refracted angels Use Snell’s Law to calculate the n for water Do a % error calculation Line a-b OUTSIDE box Line a-c INSIDE box Laser safety rules!!!!
Thurs 3/6 1.Calculation of n of water 2.Rectangle vs Triangle (or finish other from yesterday) 3.Start Mirror Ray Diagrams & Lens Ray Diagrams 4.HW: (a) Mirror/lens concepts fill-in handout RC 1, 2, 4, 5, 7-11; AC 3-8 (look in book and/or new Guided Notes for the answers we haven’t covered yet!) (b) Make sure mirror diagrams 1-6 are done, and lenses 1-3 are done (do not attempt lenses 4-6 on your own!) **Mirror & Lens diagram ppt’s are on the website! Any 11 th graders who need next-year schedules signed??
Ray Diagrams Mirrors Lenses
Fri 3/7 1.1 st period – calculate n of water from data 2.Finish diagrams: Mirrors and then maybe LensesMirrorsLenses 3.Learn equations using wrksht 4.Depending on time left: min = Laser reflection contest? (Can do after STAR too) 5 min = do Blind Spot 5 min = Watch “Optical Illusions” from Bill Nye “Brain” ?? 5.HW: (a) Mirror/lens probs old book #2, 4, 5, 7-10, (SEE HINTS ON BACK!) (b) Redo mirror diagrams a second time 2) 2.4 m 4) 20.0 cm 5) 75.0 cm 7) 30.0 cm, -1.8 cm 8) -24 cm, +9.0 cm 9) ) concave, 32.4 mm 13) 66.7 cm, 1.67 h o 14) 51 mm, 1010 mm 15) convex, 16.2 mm
1 / f = 1 / d o + 1 / d i - d i / d o = h i / h o = magnification Concave mirrors & convex lenses (diagrams 1-5) have positive focal lengths. A negative d, means the image is virtual. An infinite ( ) d i means the image is non- existent (diagram 4). Convex mirrors & concave lenses (diagrams 6) negative focal lengths. A negative h, means the image is upside down (inverted). Any problem about the sun or other stars as an object means use d o = infinity. The focal length of a "planar" mirror is infinity (recall that 1 / = 0 and that 1 / 0 = ) ***Note - because of the negative sign in the 2 nd equation, it is not possible to have a real erect image!***
Lasers with reflection Work in pairs of tables across lab tables (9 people?) Only FAR lab table has laser “ON”. Shine laser on first mirror across isle to nearby lab table. Bounce laser from first mirror to 2nd mirror back across lab tables. Bounce laser from 2nd mirror to 3rd mirror back across lab tables. Hit all 9 mirrors; the last mirror is the big one. The light must bounce off of that mirror onto the top knob of the sink at the far lab table. First pair of lab groups to get all mirrors gets extra credit; some xc for 2 nd place (if there is one). If we run out of time, group with most mirrors wins.
Mon 3/10 1.Fill in this chart in your binder (by yourself, quickly): 2.Finish Lens Diagrams 3.Go over polarization & color wrksht (turn in work packet?) 4.2x2x2 front/back STUDY GUIDE – YOU MUST HAND COPY THIS ONTO AN UNLINED SHEET OF PAPER! 5.Depending on time left: min = Laser reflection contest? (Can do after STAR too) 5 min = do Blind Spot 5 min = Watch “Optical Illusions” from Bill Nye “Brain” ?? 6.Asst: (a) Redo lens diagrams a 2nd time (b) redo 6 problems with f = 50 cm; h o =10 cm (“HW #1”) 2) 2.4 m 4) 20.0 cm 5) 75.0 cm 7) 30.0 cm, -1.8 cm 8) -24 cm, +9.0 cm 9) ) concave, 32.4 mm 13) 66.7 cm, 1.67 h o 14) 51 mm, 1010 mm 15) convex, 16.2 mm See Great America , payment due Friday, parent drivers
Make HW packet then play with with lasers: fiber optics cable, blue “card”, diffraction grating Reflection Minilab Refraction Minilab (coin-in-cup on back) Rainbow Snell’s ditto blocks A-d Snell’s ditto calculations Polarization / hand color ditto Finding n of water Rectangle vs Triangle with Snell’s
Light, Colors, (ch 16), reflection & refraction (ch 17/18) Study Guide (fold paper in hamburger twice = 4 squares on each side) Top 2 squares on front:
Light, Colors, (ch 16), reflection & refraction (ch 17/18) Study Guide bottom 2 squares of front: Draw at least 1 polariz. picture: “Polarized light” defn = the light is all vibrating in the same direction. Glare defn = reflection off a surface (which is horizontal, so sunglasses with vertical polarizers are necessary
Light, Colors, (ch 16), reflection & refraction (ch 17/18) Study Guide back-side, top 2 squares: Planar mirrors: distance to (virtual, upright) image is exactly the same as distance to the object. Image same size as object too! Other formulas: Two on front (wave eq & energy eq) For curved mirrors & lenses: 1 / f = 1 / d o + 1 / d i m = h i / h o = d i / d o EYE: iris, muscles, retina, rods & cones, optical nerve, blind spot High freq refract more; but high wavelengths diffract more specular
Light, Colors, (ch 16), reflection & refraction REVIEW & Study Guide back-side, bottom: Dispersion: colors spreading out in/through irregular shape because of different refraction amounts for different colors
Tues 3/11 1.Finish 2x2x2 “Study Guide” from yesterday if needed 2.Quick questions on curved mirror & lens book problems from last 2 nights 3.Bill Nye: eye – 10 notes required (separate sheet of paper) Also do Blind Spot & Optical Illusions 4.Asst: (a) redo all 12 diagrams – 3 rd time (smaller this time!) (b) Chameleon eye & Artificial Retina notes (do on same sheet as video notes from above!) XC if other HW completed: Notes on Black Lights & 3D glasses & Vegas Hotel 2) 2.4 m 4) 20.0 cm 5) 75.0 cm 7) 30.0 cm, -1.8 cm 8) -24 cm, +9.0 cm 9) ) concave, 32.4 mm 13) 66.7 cm, 1.67 h o 14) 51 mm, 1010 mm 15) convex, 16.2 mm Test = Tuesday 3/18
Wed 3/12 1.Asst: Concave/convex mirrors lab 2.Asst: (a) Diagrams 5&6 only (b) redo 6 problems again with f = 40 cm; h o =20 cm (“HW #2”) Test = Tuesday 3/18
Thurs 3/13 1.Thurs/Fri HW questions??? And …. ??? Turn in book work packet on curved mirrors & lenses: (a) Guided notes (b) concepts & problems (c) diagrams x 4 (d) equations worksheet (e) ?? 2.M&L summary sheet together – SKIP 3.M&L gid quiz – SKIP 4.Self-Check – mirrors/lenses TAKE THIS LIKE A TEST, and turn it in when you’re done! 5.Finish Lab 6.Depending on time left & what we did last week: 5 min = Watch “Optical Illusions” from Bill Nye “Brain” ?? 5 min = do Blind Spot min = Laser reflection contest? 7.Asst: (a) Start Review packet 8.READ GREAT AMERICA ! Test = Tuesday 3/18
Fri 3/14 (Happy Pi Day!) 1.Go over yesterday’s self-test 2.Go over ch concepts/problems CAREFULLY 3.Go over Guided Notes? 4.Asst: (a) Finish Review packet – DUE TOMORROW (b) Fill-In Study Guides Test = Tuesday 3/18
Mon 3/17 1.Go over Review packet 2.Go over polarization wrksht 3.Go over Guided Notes (2 nd =M&L,5 th =R&R) 4.Optical Illusions again? Play with lasers? Edumedia? 5.Asst: STUDY for TEST TOMORROW! best study guides = 2x2x2 review & self-test questions from yesterday XC: notes on… How Do 3D Glasses Work.doc black light, fluorescence, etc Vegas Hotel Pool.doc (see webpage)
Tues 3/18 1.TEST! 2.Turn in anything that needs turning in. 3.HW: Guided Notes chapter 20 & 21 4.GREAT AMERICA … Great America 2013 …Count of definitely who is going! trip is Friday ____ Students will need to commit to going, and know their transportation, by March 25 th Money ($40.00) will be due to Student Activities by March 31 st Field trip times are from 7:30 AM to 4 PM Remember, you must be in good academic standing AND have good attendance in all of your classes to attend. (You may only go if you have no D’s or F’s and have good attendance)