Welcome to physics Waves and Sound Review Jeopardy Game

1. Welcome to physics Waves and Sound Review Jeopardy Game First, person each needs to make a board.  Get a colored piece of paper, turn it sideways and make a grid that takes up the entire piece of paper that looks like this:

2. The test is tomorrow! • It covers all the material- vocabulary, facts, and calculations • from Chapters 12 and 13. Make sure to study! • Please click to read the rules for playing the review Jeopardy game.  • Anyone can pick the questions as you are both playing all of the questions. • 2) Pick a box and read the clue. You both put your own answer in the form • of a questionon your answer sheet being careful not to let the other person • see your paper. When you are both ready, click to get the actual answer. • If you get the answer right, write the dollar amountin the appropriate box • and circle it. You can both get it right and get the money. • If you get the answer wrong, put an X through the box. You don’t go negative. • If you both get the answer wrong, the money goes to your physics teacher. • Have one person keep a tally for her.  She cannot play the Daily Double or • Final Jeopardy.  If she wins, neither of you get a prize.

3. There is one daily doubleon the board. You can bet up to as much money • as you have. If you get that question wrong, you go negativewhatever • amount you bet. • You may or may not finish all of the questions on the board. Near the end • of the hour, it will be time to play Final Jeopardy. For Final Jeopardy if • you do not have any money you cannot play. You can bet as much as you • have, but if you get the question wrong you will go negative. • The student with the most money at the end gets a prize . You will both turn • in your Jeopardy board at the end of the hour for up to 3 points extra • credit points towards your test. Make sure to show your work. You will • not earn extra credit for just writing the correct answers if there is a • calculation involved. • Make sure you understand how to play! This will help you on the test • tomorrow!

4. Waves and Sound Review

5. Waves and Sound Review Jeopardy Final Jeopardy-play after you have done every other clue or at the end of the hour

6. Wave Guts for $100 The part of a standing wave that remains stationary Jack and Lewy graphing M&M colors  Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is a node? No duh!

7. Wave Guts for $200 Sounds with frequencies of less than 20 Hertz are known as this Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is infrasonic?

8. Wave Guts for $300 the height of a transverse wave Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is amplitude?

9. Wave Guts for $400 the frequency shift that is the result of relative motion between the source of waves and the observer Click for a hint if you both agree that you need one  Click when you are both ready and the box below will disappear to reveal the correct answer. What is the Doppler Effect? Back to game board Click here if you want to see a clip of The Big Bang Theory where Sheldon dresses as the Doppler Effect for Halloween  Watch if from the 0:27-0:48 seconds for the Doppler demo. http://www.youtube.com/watch?v=J43lAESftPs

10. Wave Guts for $500 A sound wave is traveling at 345 m/s. If it has a wavelength of 1.5 meters, this is its period. Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is 0.0043 second? Use v=fl to solve for f and then the period (T) is 1/f

11. I love vocabulary! $100 The number of waves that pass a given point each second Click here if you both agree that you need a hint  http://www.youtube.com/watch?v=Wtxz4yV_-3g Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is frequency?

12. I love vocabulary! $200 When two troughs of two waves meet you get this type of interference Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is constructive? 2 troughs will form a larger trough

13. I love vocabulary! $300 20 waves pass a given point each second…this is i) the wave’s frequency ________ ii) the wave’s period _________ (You must have the correct units on both answers and get them both right in order to win this money.) Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is i) 20 Hertz? (how many waves pass each second) ii) 0.05 second? (how long it takes one wave to pass T=1/f)

14. I love vocabulary! $400 A condition that exists when the frequency of a force applied matches the natural frequency of the object and an example of this Click when you are both ready and the box below will disappear to reveal the correct answer. What is resonance and pushing someone on a swing, a vibrating wine glass, the Tacoma Narrows bridge collapsing, etc.? Here is a picture of the new Tacoma Narrows bridge today. Notice now The wind can blow through it! Much better design! Back to game board The old Tacoma Narrows Bridge The Tacoma Narrows Bridge today

15. I love vocabulary! $500 In musical terms, the frequencies that create these standing waves also known as these Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What are harmonics? Click here to watch a video of guys illustrating standing waves in an instrument that is closed at one end  http://www.youtube.com/watch?v=t5y4zdaDFcM

16. Sound $100 This is how many meters per second the speed of sound will change by if the temperature goes up 30oC Click here for the Scooby Doo theme song while you work  http://www.youtube.com/watch?v=0_C2HJvtRDY Click when you are both ready and the box below will disappear to reveal the correct answer. What is 18 m/s? Since the equation for the speed of sound is 330 m/s + 0.6 oC, you just need to take 30 x 0.6= 18 m/s Back to game board

17. Sound $200 A 70 decibel sound is perceived to be approximately this many times louder than a 20 decibel sound Click when you are both ready and the box below will disappear to reveal the correct answer. What is 32? The loudness of a sound approximately doubles every 10 decibels, so 2 x 2 x 2 x 2 x 2 = 32 or 25 = 32. Take the free hearing test- click on: http://www.youtube.com/watch?v=4G60hM1W_mk What frequency can you hear up to? ___________Hertz (The frequencies are in kHz on the video  ) Back to game board

18. Sound $300 the name of what is happening in this picture Click when you are both ready and the box below will disappear to reveal the correct answer. What is a sonic boom? Yes, that is an actual picture. Cool! A sonic boom occurs when an object travels faster than sound! Back to game board See a sonic boom: http://www.youtube.com/watch?v=UyFJpXnKm64 2.5-minute explanation of sonic booms if you are interested: http://www.youtube.com/watch?v=-d9A2oq1N38

19. Sound $400 In the Speed of Sound experiment, if the same tuning fork was used but the water in the graduated cylinder was warmer, the wavelength would have a) been longer than if the water was cool. b) been shorter than if the water was cool. c) not changed. Click when you are both ready and the box below will disappear to reveal the correct answer. What is a) been longer than if the water was cool? v=fl The frequency would be the same. If the water was warmer, the air above it would be warmer so v would increase meaning that l would also have to increase. Back to game board

20. Sound $500 Hertz can also be expressed with this unit or combination of units Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is 1/second or wave/second?

21. Waves in Music $100 the lowest frequency that will produce a standing wave the first picture is a nice illustration of it… Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is the fundamental frequency?

22. Waves in Music $200 FM stands for this Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is frequency modulation?

23. Waves in Music $300 Taylor Swift probably knows that these are the next two harmonics for an organ pipe (closed at one end) if the fundamental frequency is 200 Hertz Click when you are both ready and the box below will disappear to reveal the correct answer. What are 600 Hertz and 1,000 Hertz? When an instrument is closed at one end, a standing wave will occur at every odd ¼ of a wavelength, so n= 1,3, 5, etc. Love Taylor Swift? Click here  http://www.youtube.com/watch?v=8xg3vE8Ie_E Back to game board

24. Waves in Music $400 the second and third harmonic of a violin string if it has a fundamental frequency of 200 Hertz Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is are 400 Hz and 600 Hz?

25. Waves in Music $500 Like in our Speed of Sound lab- the length of an air column that would resonate with a 261.6-Hertz tuning fork if the speed of sound was 348 m/s Click when you are both ready and the box below will disappear to reveal the correct answer. What is 0.33 meter? Use v=fl to find l. Then you will need to divide that by 4 because the fundamental frequency occurs at ¼ of the wavelength since the tube was closed at one end by the water. Back to game board

26. Fun with Equations! $100 the period of a 440-Hertz sound Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is 0.002 second? (Because T=1/f)

27. Fun with Equations! $200 this is the wavelength of 101.3 KDWB FM A song for you to listen to as you calculate : http://www.youtube.com/watch?v=w2WILSQ9lys Click when you are both ready and the box below will disappear to reveal the correct answer. Back to game board What is 2.96 meters? v= 3.0 x 108 m/s (radio waves travel at the speed of light) f= 101.3 x 106 Hz (FM is in MegaHertz) Then use v=fl

28. Fun with Equations! $300 Mike Myslinski screams and the sound travels to the wall and back in 0.30 second. This is the distance from Mike to the wall if it is 60oF. Click when you are both ready and the box below will disappear to reveal the correct answer. What is 50.9 meters? (Use v = 330m/s + 0.6 oC , don’t forget to convert to Celsius, then use v=Dx/Dt and cut the answer in half because you are finding the distance to the wall) Back to game board

29. Fun With Equations $400 The Daily Double! You can wager up to as much money as you have. If you get it right, you win the amount you wagered. If you get it wrong, you will lose the amount you wagered. You each write the amount you would like to wager in this square now. When you are ready, click on the box to reveal the question. A fire truck is sounding its siren with a frequency of 250 Hertz and is headed toward you at 25 m/s, this is the frequency will you hear if the speed of sound is 340 m/s What is 269.8 Hertz? (notice is sounds higher as it approaches you…) Back to game board Use f’ = f (v) where v is the speed of sound and vs is the (v-vs) speed of the source of the sound- click to see and hear a demo. http://www.youtube.com/watch?v=imoxDcn2Sgo

30. Fun with Equations $500 Spongebob Squarepants is trying to yell at Squidward to come and catch jelly fish with him. If the temperature of the water is 76oF, and the wavelength is 3.78 m, this is the frequency of Spongebob’s voice. Feel free to listen to the Spongebob theme song while you calculate- double click on this icon: Click when you are both ready and the box below will disappear to reveal the correct answer. What is 411 Hertz? v = 330 m/s + 0.6(24.2oC) = 345 m/s, but sound travels 4.5 times faster in water so v=4.5 x 345 m/s Then use v=fl Back to game board

31. Final Jeopardy Do this on the back of your Jeopardy board. You each need to make your wager. If you have no money, you cannot play. If you get it wrong you lose the amount that you wagered. Place your wagers now. Then click to get the question when both of you have placed your wager. The category is….Waves and Sound  Click here once you have placed your wager and are ready to see the Final Jeopardy question. An bucket is dropped down a well that is 130 meters deep. This is the amount of time from when you drop it to when you would hear it hit the bottom if it was 10oF. Show your work. (Answer this carefully. Hint- it requires material from a different chapter.) Click when you are both ready and the box below will disappear to reveal the correct answer. What is 5.6 seconds? You need find the time it takes the bucket to fall Dy= viDt+ 1/2aDt2 Then you need to add that to the time it would take for the sound to come back up which you can find using v = Dx/Dt Thank you for playing. Total up your money and determine the winner in your group. The winner gets a prize.  You both should turn in your Jeopardy board for up to 3 extra credit points on tomorrow’s test.