WAVS mold of ligt grad 10 ad 9 .pptx

Qartr 2

1. WAVES OF CHANGE Presented by: T. Mariane Camitog

2. are disturbances in a system which travels from one point to another. When wave travels it carries energy WAVES

3. Waves can travel with or without a medium. WAVES

4. what a wave travels through. It includes solid (land, wood, metals, etc ), liquid (water and other liquids) and gas (air and other gases). MEDIUM

5. Do medium move as the wave move? MEDIUM

6. The medium does not move with the wave as it travels. MEDIUM

7. TYPES OF WAVES

8. WAVES ACCORDING TO MEDIUM

9. Require medium in order for them to travel. MECHANICAL WAVES

10. Does not require medium in order for them to travel. ELECTROMAGNETIC WAVES

11. EM wave/radiation is a special kind of energy that travels in waves through space. It is like a wave of energy that can move without needing anything else to carry it, even in empty space. ELECTROMAGNETIC WAVES

12. WAVES ACCORDING TO DIRECTION OF MOTION

13. Travel perpendicular to the direction of motion of the wave. TRANSVERSE WAVES

14. Move in the same direction (parallel) to the direction of motion of the wave. LONGITUDINAL WAVES

15. Move in a circular pattern, thus these waves are neither transverse nor longitudinal. SURFACE WAVES

16. PARTS OF A WAVE

17. CREST is the highest portion of the wave. TRANSVERSE WAVES

18. TROUGH is the lowest portion of the wave. TRANSVERSE WAVES

19. COMPRESSION is the shrank part of the wave. LONGITUDINAL WAVES

20. RAREFACTION is where the wave is stretched LONGITUDINAL WAVES

21. CHARACTERISTICS OF A WAVE

22. If the wave has higher amplitude (big waves), then it carries greater amount of energy. AMPLITUDE Imagine you are swimming at the beach, what happen to you if the wave is small or big?

23. Distance between any two same points in the course of the wave. It is expressed in meters. WAVELENGTH

24. Distance between any two same points in the course of the wave. It is expressed in meters. WAVELENGTH

25. Distance between any two same points in the course of the wave. It is expressed in meters. WAVELENGTH

26. The number of waves that pass by each second, and is measured in Hertz (Hz) FREQUENCY

27. The time it takes for a wave to complete a full cycle or oscillation PERIOD

28. Measured as the distance over time. SPEED

29. Measured as the distance over time. SPEED

30. Measured as the distance over time. SPEED

31. ELECTROMAGNETIC WAVE

32. Are a form of radiation that travel through the universe. They are formed when an electric field couples with a magnetic field. ELECTROMAGNETIC WAVES

33. In a vacuum, all EM waves travel at the speed of light, which is equivalent to ELECTROMAGNETIC WAVES

34. Continuous range of EM waves arranged in order of frequency or wavelength. ELECTROMAGNETIC SPECTRUM

35. TYPES OF ELECTROMAGNETIC RADIATION Radio waves Microwaves Infrared Visible Light

36. TYPES OF ELECTROMAGNETIC RADIATION Visible Light Ultraviolet X-Radiation Gamma Ray

37. They have long wavelengths and low frequencies. RADIO WAVES 01

38. RADAR RADIO WAVES 01 Radio Detection and Ranging

39. HEINRICH RUDOLF HERTZ RADIO WAVES 01 He discovered this wave in 1887.

40. RADIO WAVES 01 The sun and the planet Jupiter are extraterrestrial resources of radio waves.

41. RADIO WAVES 01 The sun and the planet Jupiter are extraterrestrial resources of radio waves.

42. These are the waves that allow us to listen to the radio. They are used for broadcasting music, news, and other information. RADIO WAVES 01

43. It is also used for reducing cellulite on the body and wrinkles and fine lines on the face, & for tightening sagging or loose skin. RADIO WAVES 01

44. Microwaves have shorter wavelengths and higher frequencies than radio waves. MICRO WAVES 02

45. They are also used for communication, such as cell phones and Wi-Fi. MICRO WAVES 02

46. Microwave Doppler radars are used in weather forecasting. MICRO WAVES 02

47. They are used in microwave ovens to cook and heat food. MICRO WAVES 02

48. Microwave ablation uses the heat of microwaves to shrink or destroy tumors. MICRO WAVES 02

49. Microwave tomography is an imaging technology used to assess and monitor the progress of treatment of breast cancer. MICRO WAVES 02

50. Infrared literally means “below red” INFRARED RADIATION 03

51. Has a lower frequency than the red part of visible light. INFRARED RADIATION 03

52. Sir William Herschel, a British astronomer, discovered these waves in 1800. INFRARED RADIATION 03

53. This radiation cannot be seen by the naked eye but it can be felt as heat. INFRARED RADIATION 03

54. People, places, objects, and animals give off infrared radiation proportional to their temperature. INFRARED RADIATION 03

55. It has longer wavelengths than visible light. INFRARED RADIATION 03

56. It is used in devices like TV remote controls and thermal cameras. INFRARED RADIATION 03

57. Physiotherapists use heat lamps emitting infrared radiation to heal sports injuries. INFRARED RADIATION 03

58. EM waves are the only ones seen by the naked eye. VISIBLE LIGHT 04

59. This is the type of electromagnetic radiation that allows us to see the world around us. VISIBLE LIGHT 04

60. Visible light comes in different colors. Each color has a different wavelength. VISIBLE LIGHT 04

61. Isaac Newton discovered the range of wavelength in the visible light spectrum. VISIBLE LIGHT 04

62. How did Isaac Newton discovered the range of wavelength in the visible light spectrum? VISIBLE LIGHT 04

63. By refracting white light with a prism. VISIBLE LIGHT 04

64. VISIBLE LIGHT 04

65. VISIBLE LIGHT 04 It is used in traffic lights, commercial displays, car headlights, & taillights.

66. VISIBLE LIGHT 04 It is used by plants in photosynthesis.

67. VISIBLE LIGHT 04 Visible Light Communication (VLC) using LED is an emerging form of wireless communication technology.

68. UV radiation has shorter wavelengths and higher frequencies than visible light. ULTRAVIOLET RADIATION 05

69. It comes from the sun and is responsible for causing sunburns. We can't see UV radiation, but it can be harmful to our skin and eyes. ULTRAVIOLET RADIATION 05

70. It was discovered by German physicist Johann Wilhelm Ritter. ULTRAVIOLET RADIATION 05

71. UVA UVB UVC ULTRAVIOLET RADIATION 05

72. X-rays have even shorter wavelengths and higher frequencies than UV radiation. They can pass through our bodies and are used in medical imaging, like X-ray machines, to see our bones and organs. X-RADIATION 06

73. Gamma rays have the shortest wavelengths and highest frequencies of all the radiations. They are produced during nuclear reactions and can be very harmful. Scientists use gamma rays to treat cancer. GAMMA RADIATION 07

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