Do Now (4/23/12): Make a list of concepts you need to know for your test tomorrow

Ms. Timson’s Review to Conquer Physics

Rules of the Game There will be tribes, as divided by the teacher For each problem which appears on the slide, the tribe will be able to work together to vote on one answer given only the time which will be written on the slide. Tribes cast their answer using their voting cards only in the time allowed. Each team with a correct answer is allowed to cast one vote to remove another tribe from the island. The teacher will have each tribe cast their vote simultaneously by writing the color of the tribe they are voting for on their white board. The teacher will then remove tribes from the island. The teacher will track which tribes are in and which tribes are out of the game with signs on the board. If a tribe is voted out, they can reenter the game by answering the next question correctly to reenter. They will NOT receive a vote for that question but must wait until the next question. Winning tribes will be those still on the island at the end of the game. ***The teacher will be the final judge of any conflicts or confusions – and remember, be respectful and be honest!

1. If the particles of the medium are vibrating to and fro in the same direction of energy transport, then the wave is a ____ wave. A.longitudinal B. sound C. standing D. transverse 15 seconds

2. A single disturbance that moves from point to point through a medium is called a ___. A.period B. periodic wave C. wavelength D. Pulse 10 seconds

3. Suppose that sound waves emanate from a razor at a rate of 50 cycles per second and spread out at 340 m/s. The frequency is: A.6.8 Hz B. 25 Hz C. 50 Hz D. 200 Hz 25 seconds

4. A radio station broadcasts at a frequency of 660 kHz. What is the wavelength of these waves? The speed of radio wave is 3 x 10 8 m/s. A m B m C. 2.2 x m D m 40 seconds

5. How fast is the sound moving in air if the air temperature is 40ºC? A m/s B m/s C m/s D m/s 40 seconds

6. Which property of sound is determined by the sounds amplitude? A. pitch B. loudness C. overtones D. resonance 15 seconds

9. Sound wave does not travel through _____. A.air B. water C. a vacuum D. iron 20 seconds

10. A sound wave of amplitude A interferes with another sound wave whose frequency is different but whose amplitude is also A. The resulting wave _____. A.has an amplitude of 2A B.varies in amplitude between 0 and A C.varies in amplitude between A and 2A D.varies in amplitude between 0 and 2A 30 seconds

11. Maximum displacement of a wave from the rest or equilibrium position is called the ______. A)wavelength B) frequency C) overtone D) Amplitude 15 seconds

13. A wave in which the displacement of the medium is perpendicular to the direction of propagation is ______. A)a crest B) longitudinal C) rarefaction D) transverse 10 seconds

14. The number of waves that pass a point in a unit period of time is ________. A)amplitude B) frequency C) speed D) wavelength 10 seconds

15. Longitudinal waves are generated in a coil spring with a frequency of 10 hz. If they travel at 40 m/s, what is their wavelength? A)0.25 m B) 4 m C) 30 m D) 400 m 40 seconds

16. If a sound wave speeds up when it enters a new medium, the wavelength _____. A)increases B)B) decreases C)C) stays the same 45 seconds

17. The sound from a tuning fork resonates in a closed tube 18.0 cm long and 5.00 cm in diameter. At the time of the experiment the speed of sound is 360 m/s. (A closed tube is closed at one end.) What is the wavelength of the sound waves?* (You must include consideration of the tube diameter. You may refer to the formula in your lab) A)72.0 cm B) 73.6 cm C) 80.0 cm D) cm E) cm 55 seconds

18. The sound from a tuning fork resonates in a closed tube 18.0 cm long and 5.00 cm in diameter. At the time of the experiment the speed of sound is 360 m/s. (A closed tube is closed at one end.) The frequency of the tuning fork is ________. A)4.5 Hz B) 5.0 Hz C) 50 Hz D) 225 Hz E) 450 Hz 55 seconds

19. The sound from a tuning fork resonates in a closed tube 18.0 cm long and 5.00 cm in diameter. At the time of the experiment the speed of sound is 360 m/s. (A closed tube is closed at one end.) The next tube length at which resonance can occur with this tuning fork is ________. A)28 cm B) 36 cm C) 40 cm D) 58 cm E) 98 cm 55 seconds

Congratulations! Good luck tomorrow! I know you can conquer your test

7. A pure musical tone causes a thin wooden panel to vibrate. This is an example of _____. A.an overtone B. harmonics C. interference D. resonance 20 seconds

8. In which medium will sound travel the fastest? A.air B. water C. a vacuum D. iron 15 seconds

12. Resonance can occur when the natural ______ of two objects are the same. A)amplitudes B) frequencies C) velocities D) Mass 20 seconds