1. Game Time! Review of Waves

2. Supplies Needed One white board for each student One dry erase marker for each student Paper towel to erase Calculator Thinking caps!

3. Directions Each question will be for all students to answer Write your answer on your white board Turn it over Hold up your board when asked Only the first answer counts

4. Directions For each correct answer you will get a popsicle stick The 3 people with the most sticks at the end of the game get prizes 1 st – Grand prize 2 nd – Candy (3 pieces) 3 rd – Candy (2 pieces)

5. Question #1 Identify the wave property labeled “A” A A Answer: Amplitude

6. Question #2 Identify the point labeled “B” B B Answer: Crest

7. Question #3 Identify the point labeled “C” CC Answer: Trough

8. Question #4 Identify the wave property labeled“D” D D Answer: Wavelength

9. Question #5 Identify “E” E Answer: Equilibrium position E

10. Question #6 The primary difference between an electromagnetic wave and a mechanical wave is that a(n) _____________ wave can travel through empty space while the other can not. Answer: electromagnetic

11. Question #7 The energy of a wave depends on its __________________. Answer: Amplitude

12. Question #8 In a _________________ wave, the medium vibrates vertically while the wave travels horizontally. Answer: Transverse

13. Question #9 In a __________________ wave, the medium moves back and forth while the wave moves horizontally. Answer: Longitudinal or Compressional

14. Question #10 What is the symbol for amplitude? Answer: A

15. Question #11 Amplitude is measured in what units? Answer: meters (m)

16. Question #12 What is the symbol for wavelength? Answer: λ

17. Question #13 Wavelength is measured in what units? Answer: meters (m)

18. Question #14 What is the symbol for period? Answer: T

19. Question #15 A period is measured in what units? Answer: seconds

20. Question #16 What is the symbol for frequency? Answer: f

21. Question #17 Frequency is measured in what units? Answer: Hertz (Hz)

22. Question #18 What is the symbol for wave speed or velocity? Answer: v

23. Question #19 Wave speed is measured in what units? Answer: m/s

24. Question #20 What equation relates period and frequency only? Answer: T = 1/f or f = 1/T

25. Question #21 In a _______________ wave, the displacement of the particles in the medium is perpendicular to the direction of the wave propagation. Answer: Transverse

26. Question #22 What equation can we use to find wave speed if we have wavelength and period? Answer: v = λ/T

27. Question #23 The speed of a wave depends on the __________________. Answer: medium

28. Question #24 In a __________________ wave, the displacement of the particles of the medium is parallel to the direction of the wave propagation. Answer: Longitudinal or Compressional

29. Question #25 Wave _____________ (frequency or velocity) is the number of vibrations per second of a part of the medium Answer: frequency

30. Question #26 As the wavelength of a wave increases, the frequency of the wave ________________. Answer: decreases

31. Question #27 The frequency of a certain color of light is 4.2 x 10 14 Hz. The speed of light is 3.0 x 10 8 m/s. Find its wavelength. Hint: v = fλ Answer: 7.14 x10 -7 m

32. Question #28 A wave has a period of 12.0 s. What is the frequency? Hint: f = 1/T Answer: 0.083 Hz

33. Question #29 The distance between a crest and the adjacent trough is 2.00 m. What is the wavelength? Hint: Measured crest to crest Answer: 4.00 m

34. Question #30 A wave has a period of 12.0 s. The distance between a crest and the adjacent trough is 2.00 m. (f = 0.083 Hz and λ = 4.00 m) What is the velocity? Hint: v = λ/T or v = f λ Answer: 0.33 m/s

35. Question #31 Identify “B” B B Answer: Crest

36. Question #32 Identify “E” E Answer: Equilibrium position E

37. Question #33 Identify “D” D D Answer: Wavelength

38. Question #34 An ocean wave has a length of 10.0 m. A wave passes a fixed location every 2.0 s. What is the speed of the wave? Hint: v = λ/T Answer: 5.0 m/s

39. Question #35 A ________________ wave has properties of both a transverse and longitudinal wave. Answer: Surface

40. Question #36 The shortest time interval during which the motion of a wave repeats itself. Answer: Period

41. Question #37 The number of waves that pass a given point in 1 second. Answer: Frequency

42. Question #38 The ___________ of a wave depends on the properties of the medium through which it is traveling. Answer: speed

43. Question #39 What happens to the period of a wave as the frequency increases? Answer: decreases

44. Question #40 Waves transfer _______________ without transferring matter. Answer: energy

45. Game Over! Count your sticks Write how many sticks you have on your board Hold it up Prizes will be awarded