1. A longitudinal wave is: 1.A wave where the particle oscillation is perpendicular to the direction of wave motion 2.A wave where the particle oscillation is perpendicular to the direction of wave motion Countdown 10 Response Grid

2. How many nodes and antinodes? 1.4, 5 2.5, 8 3.5, 4 4.4, 8 Countdown 10 Response Grid

3. Which of the following sources of sound has the shortest wavelength? 1.A female soprano singer at 2,000 Hz 2.A bass guitar at 150 Hz 3.A male voice at 500 Hz 4.The rumble of thunder at 75 Hz Countdown 10 Response Grid

4. When waves interference constructively to produce a pattern of light and dark regions they are Countdown 10 1.Out of phase 2.In phase 3.Standing waves 4.Cancelling one another Response Grid

5. When a distant object approaches you, such as a galaxy in outer space, you will observe 1.The Doppler effect 2.Blue shift 3.Red shift 4.Both 1 & 2 5.Both 1 & 3 Countdown 10 Response Grid

6. Leader Board

7. Two successive crests of a transverse wave are 1.20 m apart. Eight crests pass a given point every 12.0 s. What is the wave speed? 1.0.667 m/s 2.1.80 m/s 3.0.800 m/s 4.9.60 m/s Countdown 10 Response Grid

8. The period of a pendulum may be decreased by 1.Shortening its length 2.Increasing the mass of the bob 3.Moving its equilibrium point 4.Increasing its length Countdown 10 Response Grid

9. If the pendulum completes exactly 12 cycles in 2.0 minutes, what is the frequency of the pendulum? 1.0.10 Hz 2.0. 17 Hz 3.6.0 Hz 4.10 Hz Countdown 10 Response Grid

10. The period of this wave is… 1.2 seconds 2.4 seconds 3.6 seconds Countdown 10 Response Grid

11. The amplitude of this wave is… 1.4.8 meters 2.4.0 meters 3.2.4 meters Countdown 10 Response Grid

12. Leader Board 0Participant 1 0Participant 2 0Participant 3 0Participant 4 0Participant 5

13. A wave with an amplitude of 0.75 m has the same wavelength as a second wave with an amplitude of 0.53 m. The two waves interfere. What is the amplitude of the resultant wave if the interference is constructive? 1.0.22 m 2.0.53 m 3.0.75 m 4.1.28 m Countdown 10 Response Grid

14. A total of 5 s passes as a child completes one complete swing on a playground swing. The period of the swing is 1.1/5 s 2.20 s 3.5 s 4.1 s Countdown 10 Response Grid

15. The frequency of a certain pendulum is 0.5 Hz. The period of this pendulum is 1.0.2 s 2.0.5 s 3.2 s 4.5 s Countdown 10 Response Grid

16. Which of the following factors has the greatest effect on the frequency of a swinging pendulum? 1.Friction 2.Amplitude 3.Mass 4.Length Countdown 10 Response Grid

17. If a given pendulum is moved from Earth to a location where the gravitational acceleration is greater than Earth’s, the frequency of the pendulum’s swing will 1.Increase 2.Decrease 3.Be unchanged 4.Vary with the mass of the bob Countdown 10 Response Grid

18. Leader Board 0Participant 1 0Participant 2 0Participant 3 0Participant 4 0Participant 5

19. The material through which a mechanical wave travels is 1.A medium 2.Empty space 3.Water 4.Air Countdown 10 Response Grid

20. The human voice has been shown to be capable of shattering a glass. This is possible due to… 1.Resonance 2.Doppler Effect 3.Interference 4.Harmonics 5.Timbre Countdown 10 Response Grid

21. When a transverse wave passes through water, water molecules are displaced 1.Permanently in the direction of the wave motion 2.Permanently in a direction perpendicular to the wave 3.Temporarily in the direction of the wave motion 4.Temporarily in a direction perpendicular to the wave Countdown 10 Response Grid

22. You are traveling in a car near by a moving train. The train sounds its whistle, but you fail to hear the Doppler effect. This may be because… 1.You are traveling away from the train too fast to detect it 2.You are traveling towards the train too fast to detect it 3.You are traveling at the same speed as the train 4.You are traveling away from the train too slowly to detect it 5.You are traveling towards the train to slowly to detect it Countdown 10 Response Grid

23. The distance between two troughs of a transverse wave is the wave’s 1.Amplitude 2.Wavelength 3.Frequency 4.Rarefaction Countdown 10 Response Grid

24. Leader Board 0Participant 1 0Participant 2 0Participant 3 0Participant 4 0Participant 5

25. Suppose you are dangling your foot in a swimming pool, making ripples (waves) by moving your foot up and down. What could you do to make the ripples travel faster through the water? 1.Move your foot up and down more frequently 2.Move your foot up and down less frequently 3.Move your foot up and down more strongly 4.None of the above Countdown 10 Response Grid

26. A wave is passing through a uniform medium. As the frequency of this wave increases, its wavelength 1.Depends on amplitude 2.Decreases 3.Increases 4.Does not change Countdown 10 Response Grid

27. A ____ wave travels through a medium as a series of compressions and rarefactions. 1.Sine 2.Longitudinal 3.Pulse 4.Transverse Countdown 10 Response Grid

28. When two transverse waves traveling through a medium meet and exactly coincide, the resulting displacement of the medium 1.Is the sum of the displacements of each wave 2.Is zero 3.Is always greater than the displacement of either wave alone 4.Is always destructive Countdown 10 Response Grid

29. When two waves having displacements in opposite directions meet, ____ occurs. 1.Complete destructive interference 2.No interference 3.Constructive interference 4.Destructive interference Countdown 10 Response Grid

30. Leader Board 0Participant 1 0Participant 2 0Participant 3 0Participant 4 0Participant 5

31. A wave pattern on a stretched string appears to be stationary. This wave pattern is an example of 1.A longitudinal wave 2.A non-periodic wave 3.A pulse wave 4.A standing wave Countdown 10 Response Grid

32. In a standing wave on a vibrating string, a point that appears to remain stationary is a(n) 1.Antinode 2.Point of constructive interference 3.Node 4.rarefaction Countdown 10 Response Grid

33. An ocean wave has a frequency of 2 Hz and a speed of 20 m/s. What is the wavelength of this wave? 1.0.1 m 2.5 m 3.10 m 4.40 m Countdown 10 Response Grid

34. Two waves meet and interfere constructively. Which one of the following factors increases? 1.Period 2.Frequency 3.Amplitude 4.Wavelength Countdown 10 Response Grid

35. You sit in the audience and listen to a concert band play. Which instruments sound reaches your ears first, the flute or the trombone? 1.The flute 2.The trombone 3.They reach your ears at the same time. Countdown 10 Response Grid

36. Leader Board 0Participant 1 0Participant 2 0Participant 3 0Participant 4 0Participant 5

37. A string is rigidly attached to a post at one end. Several pulses of amplitude 0.15 m sent down the string are reflected at the post and travel back down the string without a loss of amplitude. What is the amplitude at a point on the string where the maximum displacement points of two pulses cross? What type of interference is this? 1.0.30 m; constructive 2.0.30 m; destructive 3.0.00 m; constructive 4.0.00 m; destructive Countdown 10 Response Grid

38. A string is attached to a post loosely and free to move. Several pulses of amplitude 0.15 m sent down the string are reflected at the post and travel back down the string without a loss of amplitude. What is the amplitude at a point on the string where the maximum displacement points of two pulses cross? What type of interference is this? 1.0.30 m; constructive 2.0.30 m; destructive 3.0.00 m; constructive 4.0.00 m; destructive Countdown 10 Response Grid

39. What type of wave is a sound wave? 1.Mechanical and Transverse 2.Mechanical and Longitudinal 3.Electromagnetic and Transverse 4.Electromagnetic and Longitudinal Countdown 10 Response Grid

40. The main factor that determines the speed of a sound wave is… 1.The amplitude 2.The frequency 3.The intensity 4.The properties of the medium 5.The wavelength Countdown 10 Response Grid

41. Which of the following factors determines the pitch of a sound? 1.Amplitude 2.Intensity 3.Frequency 4.Phase 5.Speed Countdown 10 Response Grid

42. Leader Board 0Participant 1 0Participant 2 0Participant 3 0Participant 4 0Participant 5

43. While driving, you hear a police car siren approaching from behind. If the siren produces a 1500 Hz sound, you will hear a sound… 1.Greater than 1500 Hz 2.Less than 1500 Hz 3.Equal to 1500 Hz 4.You will not be able to hear this sound Countdown 10 Response Grid

44. At room temperature, sound will travel most slowly through which of the following? 1.Iron 2.Water 3.Aluminum 4.Mercury 5.Helium Countdown 10 Response Grid

45. An observer waits for an approaching train. The train blows its whistle approaches the station at a constant speed. The frequency of sound detected by the observer compared to the original whistle will be… 1.higher 2.lower 3.Increasingly higher 4.Increasingly lower Countdown 10 Response Grid

46. Final Leader Board 0Participant 1 0Participant 2 0Participant 3 0Participant 4 0Participant 5