quiz: to earn ½ points back: on another sheet of paper: 1. write the correct answer and explain why...
TRANSCRIPT
![Page 1: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/1.jpg)
Quiz: To Earn ½ Points Quiz: To Earn ½ Points Back:Back:
On another sheet of paper:On another sheet of paper:
1.1. Write the correct answerWrite the correct answer and and explain explain WHYWHY this is the correct answer. this is the correct answer.
OROR
2. 2. Give another exampleGive another example of the same of the same kind of thingkind of thing (or (or expandexpand on the on the info.).info.).
![Page 2: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/2.jpg)
10/19 Doppler Effect10/19 Doppler Effect
Warmup:Warmup:1. 1. Draw:Draw: Draw and label 2 waves, one high Draw and label 2 waves, one high
frequency and one low frequency.frequency and one low frequency.2. 2. DiscussDiscuss: What does a train whistle or car horn : What does a train whistle or car horn
sound like as it approaches then moves past?sound like as it approaches then moves past?
TodayToday1. The Doppler Effect: Demo, Discussion, Videos1. The Doppler Effect: Demo, Discussion, Videos2. Quiz back, grades2. Quiz back, grades3. Current Event3. Current Event
ALSO: Tape in pictures from Friday
![Page 3: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/3.jpg)
Friday
![Page 4: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/4.jpg)
soundsound
![Page 5: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/5.jpg)
The Doppler EffectThe Doppler Effect
Tone GeneratorTone Generator
![Page 6: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/6.jpg)
Frog on a moving lily padFrog on a moving lily pad
![Page 7: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/7.jpg)
the doppler effectthe doppler effect
![Page 8: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/8.jpg)
The Doppler EffectThe Doppler Effect
Video: The Doppler Effect (1:56)Video: The Doppler Effect (1:56)
![Page 9: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/9.jpg)
The Doppler EffectThe Doppler Effect
What does the Doppler effect have What does the Doppler effect have to do with stars?to do with stars?
![Page 10: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/10.jpg)
color & wavelengthcolor & wavelength
wavelength in nanometres
700 650 600 550 500 400
red yelloworange green blue indigo violet
![Page 11: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/11.jpg)
emission spectraemission spectra
hydrogen
helium
white light
neon
![Page 12: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/12.jpg)
red-shift blue shiftred-shift blue shiftlaboratory spectrum of sodium
red shift
blue shift
RED BLUE
![Page 13: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/13.jpg)
red-shift blue-shiftred-shift blue-shift
![Page 14: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/14.jpg)
Summary Notes on the Doppler EffectSummary Notes on the Doppler Effect 3-minute Quick Write3-minute Quick Write
Video: Red Shift (2:15)Video: Red Shift (2:15)
![Page 15: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/15.jpg)
Edwin Hubble, 1920’s.Edwin Hubble, 1920’s. If all galaxies are receding, the logical If all galaxies are receding, the logical
conclusion is the universe is conclusion is the universe is expanding.expanding.
If the universe is expanding, what if If the universe is expanding, what if we run time backwards?we run time backwards?
Universe would have been smaller, Universe would have been smaller, more dense… infinitely so?more dense… infinitely so?
Two conflicting theories of Universe Two conflicting theories of Universe origins:origins:
1.1. Steady State Steady State 2.2. The Big Bang The Big Bang
![Page 16: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/16.jpg)
10/22 TEST REVIEW10/22 TEST REVIEWWarmup: Warmup: 1. Turn in Current Event1. Turn in Current Event2. Mark your notes from the last 2 days:2. Mark your notes from the last 2 days:
= most interesting thing= most interesting thingCircleCircle = helped me understand Big = helped me understand Big BangBang
? ? = I’d still like to know more= I’d still like to know more
TodayToday1.1. Big Bang Review Big Bang Review2.2. Unit Review for Test Unit Review for Test
![Page 17: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/17.jpg)
Explore questions…Explore questions…
http://curious.astro.cornell.edu/cosmologhttp://curious.astro.cornell.edu/cosmology.phpy.php
![Page 18: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/18.jpg)
The Big Bang TheoryThe Big Bang Theory
Warmup: Warmup:
Explain the spectrum:Explain the spectrum:
TodayToday
Discussion & Video: “Back to the Discussion & Video: “Back to the Beginning”Beginning”
![Page 19: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/19.jpg)
Doppler ShiftDoppler Shift
blue-shifted object –moving towards blue-shifted object –moving towards
red-shifted object moving away
![Page 20: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/20.jpg)
![Page 21: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/21.jpg)
The Balloon Analogy
![Page 22: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/22.jpg)
The Raisin Bread Analogy
![Page 23: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/23.jpg)
Big Bang TheoryBig Bang Theory
Honors CSHonors CS Video: BBC video on Steady State Video: BBC video on Steady State
(Hoyle) vs Big Bang (Gamov)(Hoyle) vs Big Bang (Gamov)
![Page 24: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/24.jpg)
Big Bang TheoryBig Bang Theory
Models of the UniverseModels of the Universepages from Big Bang book (S.Singh)pages from Big Bang book (S.Singh)
p. 68-69 Earth vs. Sun-Centeredp. 68-69 Earth vs. Sun-Centered
p. 370-371 BigBang vs Steady Statep. 370-371 BigBang vs Steady State
![Page 25: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/25.jpg)
Big Bang TheoryBig Bang Theory
Video: Back to the Beginning Video: Back to the Beginning (portion)(portion)
![Page 26: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/26.jpg)
Three important observationsThree important observations
1. The expansion of the Universe.
Hubble: galaxies are receding. 1st evidenceHubble: galaxies are receding. 1st evidence
2. The abundance of light elements (H, He, Li)2. The abundance of light elements (H, He, Li)
B.Bang theory predicts these elements should B.Bang theory predicts these elements should have been fused from protons and neutrons in have been fused from protons and neutrons in the first few minutes after the Big Bang.the first few minutes after the Big Bang.
3. Cosmic Microwave Background (CMB) Radiation3. Cosmic Microwave Background (CMB) Radiation The early universe should have been very hot. The early universe should have been very hot.
The CMB radiation is the remnant heat leftover The CMB radiation is the remnant heat leftover from the Big Bang.from the Big Bang.
![Page 27: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/27.jpg)
Cosmic Microwave Background
![Page 28: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/28.jpg)
Big Bang TimelineBig Bang Timeline
We are here
![Page 29: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/29.jpg)
Common MisconceptionsCommon Misconceptions
The Big Bang was an explosion.The Big Bang was an explosion. The universe began as a point.The universe began as a point. The universe is expanding into The universe is expanding into
“something” and we are at the center of “something” and we are at the center of the expansion.the expansion.
Galaxies are “flying away” in space.Galaxies are “flying away” in space.
![Page 30: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/30.jpg)
Predictions of a Big Bang Predictions of a Big Bang UniverseUniverse
Every point is receding away from every Every point is receding away from every other point. Every point seems to be at other point. Every point seems to be at the center of an expanding universe.the center of an expanding universe.
The farther away something is, the faster The farther away something is, the faster it is receding (unlike an explosion).it is receding (unlike an explosion). Farther away Farther away looks redder (Doppler effect) looks redder (Doppler effect)
Relationship is linear: twice as far Relationship is linear: twice as far receding twice as fast.receding twice as fast.
I: Hubble’s Law
![Page 31: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/31.jpg)
Big Bang websitesBig Bang websites
For 2 students (& others?)For 2 students (& others?) http://www.astro.ucla.edu/~wright/doppler.htmhttp://www.astro.ucla.edu/~wright/doppler.htm http://science.howstuffworks.com/big-bang-theory.htmhttp://science.howstuffworks.com/big-bang-theory.htm ““print” button -- this and next few pagesprint” button -- this and next few pages http://map.gsfc.nasa.gov/universe/bb_concepts.htmlhttp://map.gsfc.nasa.gov/universe/bb_concepts.html http://map.gsfc.nasa.gov/universe/WMAP_Universe.pdfhttp://map.gsfc.nasa.gov/universe/WMAP_Universe.pdf http://cosmology.berkeley.edu/Education/IUP/http://cosmology.berkeley.edu/Education/IUP/
Big_Bang_Primer.htmlBig_Bang_Primer.html http://curious.astro.cornell.edu/cosmology.phphttp://curious.astro.cornell.edu/cosmology.php Have students spend ~30 minutes reading through the questions. Have students spend ~30 minutes reading through the questions.
Write (1) new understandings (2) new questionsWrite (1) new understandings (2) new questions http://www.amtp.cam.ac.uk/user/gr/public/bb_home.htmlhttp://www.amtp.cam.ac.uk/user/gr/public/bb_home.html http://curious.astro.cornell.edu/cosmology.phphttp://curious.astro.cornell.edu/cosmology.php http://www.umich.edu/~gs265/bigbang.htmhttp://www.umich.edu/~gs265/bigbang.htm
![Page 32: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/32.jpg)
![Page 33: Quiz: To Earn ½ Points Back: On another sheet of paper: 1. Write the correct answer and explain WHY this is the correct answer. OR 2. Give another example](https://reader036.vdocuments.us/reader036/viewer/2022062301/56649ea95503460f94bad258/html5/thumbnails/33.jpg)