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Jeopardy

Jeopardy. PHY101 Chapter 8 Review Study of EM Waves Cheryl Dellai. Study of EM Waves. Magnetism $100. Like poles (repel/attract). ANSWER. Magnetism $200. Magnetic field of the Earth on average. ANSWER. Magnetism $300. Magnetic field at Phoenix. ANSWER. Magnetism $400.

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Jeopardy

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  1. Jeopardy PHY101 Chapter 8 Review Study of EM Waves Cheryl Dellai

  2. Study of EM Waves

  3. Magnetism $100 Like poles (repel/attract). ANSWER

  4. Magnetism $200 Magnetic field of the Earth on average. ANSWER

  5. Magnetism $300 Magnetic field at Phoenix. ANSWER

  6. Magnetism $400 What is the magnetic field force equation? ANSWER

  7. Interactions $100 What can change in the magnetic flux? ANSWER

  8. Interactions $200 What is Faraday's Law? ANSWER

  9. Interactions $300 What is Ampere-Maxwell's Law? ANSWER

  10. Interactions$400 What is Lenz’s Law? ANSWER

  11. EM Waves $100 How are EM waves created? ANSWER

  12. EM Waves $200 A radio transmitter broadcasts at a frequency of 200,000 Hz. What is the wavelength of the wave? ANSWER

  13. EM Waves $300 What is the wavelength of the peak of the blackbody radiation curve for something at 3,000 K—the temperature of the filament of a light bulb? What type of EM wave is this? ANSWER

  14. EM Waves$400 About how hot does something have to get to glow red hot? ANSWER

  15. EM Spectrum $100 The cosmic background radiation has _____. ANSWER

  16. EM Spectrum $200 The main form of radiation that our bodies emit is __________. ANSWER

  17. EM Spectrum $300 __________ radiation is emitted from a small hole in a furnace. ANSWER

  18. EM Spectrum $400 The total radiant power emitted by a blackbody is proportional to its __________ raised to the fourth power. ANSWER

  19. Atmosphere $100 The ionosphere reflects __________ frequency radio waves. ANSWER

  20. Atmosphere $200 The ozone layer absorbs __________ radiation from sunlight. ANSWER

  21. Atmosphere $300 The greenhouse effect occurs because carbon dioxide in the atmosphere absorbs __________ radiation. ANSWER

  22. Atmosphere $400 The increase in the amount of carbon dioxide in the atmosphere is responsible for __________. ANSWER

  23. Potpourri $100 Bones show up in x ray images because they absorb x rays more efficiently than muscle and other tissues do. (True/False) ANSWER

  24. Potpourri $200 __________ are emitted when high speed electrons decelerate as they are smashed into a metal target. ANSWER

  25. Potpourri $300 TV remote controls use __________ radiation. ANSWER

  26. Potpourri $400 A superconductor expels any magnetic field from its interior. This is called __________. ANSWER

  27. Magnetism$100Answer Like poles (repel/attract). Repel Back to Jeopardy

  28. Magnetism$200Answer Magnetic field of the Earth on average 1 gauss or 100 µT SI unit is Tesla = T Back to Jeopardy

  29. Magnetism$300Answer Magnetic field at Phoenix. 1/2 gauss or 50 µT Back to Jeopardy

  30. Magnetism$400Answer What is the magnetic field force equation? F =qvB = ILB Where v & B are perpendicular XXXXXXXX XXXXXXXX XXXXXXXX Back to Jeopardy

  31. Interactions$100Answer What can change in the magnetic flux? The Magnetic Field The Area The angle Back to Jeopardy

  32. Interactions$200Answer What is Faraday's Law? A changing Magnetic Flux will create a changing Electric Field that opposes the change. Back to Jeopardy

  33. Interactions$300Answer What is Ampere-Maxwell's Law? A changing Electric Flux will create a changing Magnetic Field that opposes the change. A current will create a Magnetic Field.. Back to Jeopardy

  34. Interactions$400Answer What is Lenz’s Law? The induced EMF opposes the change that caused it. Back to Jeopardy

  35. EM Waves $100Answer How are EM waves created? They are created by accelerating charges. Back to Jeopardy

  36. EM Waves $200Answer A radio transmitter broadcasts at a frequency of 200,000 Hz. What is the wavelength of the wave?  =c/f = 1,500 m Back to Jeopardy

  37. EM Waves $300Answer What is the wavelength of the peak of the blackbody radiation curve for something at 3,000 K—the temperature of the filament of a light bulb? What type of EM wave is this? ¬max in meters = 0.0029/T in K) 9.67*E10-7 m = 967 nm, infrared Back to Jeopardy

  38. EM Waves $400Answer About how hot does something have to get to glow red hot? T = 0.0029/¬ = 4265K = 3992OC = 7153 OF Red = 680 nm PEAK AT RED Objects cooler than 700K (800OF) appear red because we can not see into the infrared. Back to Jeopardy

  39. EM Spectrum $100Answer The cosmic background radiation has _. has a blackbody spectrum .has its peak emission in the microwave band. corresponds to a blackbody at a temperature of 2.726 Ks. Back to Jeopardy

  40. EM Spectrum $200Answer The main form of radiation that our bodies emit is infrared. Back to Jeopardy

  41. EM Spectrum $300Answer Blackbody radiation is emitted from a small hole in a furnace. Back to Jeopardy

  42. EM Spectrum $400Answer The total radiant power emitted by a blackbody is proportional to its temperature raised to the fourth power. Power = AT4 Back to Jeopardy

  43. Atmosphere $100Answer The ionosphere reflects low (AM) frequency radio waves. Back to Jeopardy

  44. Atmosphere $200Answer The ozone layer absorbs ultraviolet radiation from sunlight. Back to Jeopardy

  45. Atmosphere $300Answer The greenhouse effect occurs because carbon dioxide in the atmosphere absorbs infrared radiation. Back to Jeopardy

  46. Atmosphere $400Answer The increase in the amount of carbon dioxide in the atmosphere is responsible for global warming, the greenhouse effect. Back to Jeopardy

  47. Potpourri $100Answer Bones show up in x ray images because they absorb x rays more efficiently than muscle and other tissues do. (True) Back to Jeopardy

  48. Potpourri $200Answer X-rays are emitted when high speed electrons decelerate as they are smashed into a metal target. Back to Jeopardy

  49. Potpourri $300Answer TV remote controls use infrared radiation. Back to Jeopardy

  50. Potpourri $400Answer A superconductor expels any magnetic field from its interior. This is called the Meissner effect . Back to Jeopardy

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