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Review#12 climate

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  • 1. L.O: THESUN, CLIMATE, INSOLATION, SEASONS, OCEAN CURRENTS
  • 2. The climate is the long termweather that Earth has.The Sun’s INSOLATION, Earth’s 23.5degree tilt and large bodies of watercause the climate.
  • 3. INSOLATION:
  • 4. The INSOLATION (SUNLIGHT) fromthe Sun is the source of Earth’senergy
  • 5. The Sun gives off the entireElectromagnetic spectrum ofenergy….
  • 6. Earth gets the visible light and heat(infrared) and a little UV. EveryOTHER light is blocked byatmosphere.
  • 7. *Angle of insolation: theangle that sunlight hits Earth’ssurface.
  • 8. The angles of insolation can rangefrom 00 to 900.
  • 9. Rays that strike at 900 are calledvertical rays (or direct rays).
  • 10. Very hot & sunny places get insolation(sunlight) at close to a 900 degreeangle.
  • 11. Very cold places get insolation(sunlight) at much less than 900 degreeangle.
  • 12. *places with the most vertical sunlighthave the highest temperatures.
  • 13. *As the angle of insolation increases theintensity of insolation also increasesAngle of insolation
  • 14. Which location is receiving the MOSTamount of insolation (sunlight): A, B, COR D?
  • 15. A
  • 16. Which diagram shows the angle of INSOLATION that wouldproduce the greatest intensity of INSOLATION at a location inNew York State?•A•B•C•D
  • 17. D•A•B•C•D
  • 18. WHICH LOCATION WOULD RECEIVETHE GREATEST AMOUNT OFINSOLATION?
  • 19. B
  • 20. WHICH LOCATION GETS THE MOSTCONCENTRATED SUNLIGHT? HOW DOYOU KNOW?
  • 21. The greatest angle of insolation gets the most sunlight
  • 22. ***the Only places between 23 1/2N(Tropic of Cancer) &23 1/2S (tropic of Capricorn) getvertical rays.
  • 23. *solar noon:when the sun isat its highest point in the sky
  • 24. ***AT solar noon the angle ofinsolation of the sun’s rays are attheir closest to being vertical(direct & concentrated)
  • 25. Note:Even at high noon, mostplaces is never getvertical sun rays (rays atexactly an angle of 90.
  • 26. ***Only the places between the tropic of Cancer(23.5 North latitude) & the Tropic of Capricorn(23.5 Southlatitude)get vertical (90 degree angle) rays.That’s its always so hot down there
  • 27. *June 21( summer solstice):the sun’s rays are verticalover the tropic of cancer.
  • 28. *Sept 23(Autumnal equinox): thesun’s rays are vertical over theequator.
  • 29. Dec 21(winter solstice): the sun’s rayare vertical over the tropic ofcapricorn.
  • 30. *** on March 21(vernal equinox): thesun’s rays are vertical over theequator
  • 31. 
If the model of location B represents the apparent path of theSun observed at the Equator, what is the date at location B?• a. March 21• b. June 21• c. October 21• d. December 21
  • 32. 
If the model of location B represents the apparent path of theSun observed at the Equator, what is the date at location B?• a. March 21• b. June 21• c. October 21• d. December 21
  • 33. The Seasons:four different time periods ofthe year with differentweather.
  • 34. ***You must remember four“SPECIAL” days: MARCH21ST, JUNE 21ST, SEPTEMBER23RD AND DECEMBER 21ST.
  • 35. Mar. 21: vernal equinox (spring):equator gets vertical rays
  • 36. June 21: summer solstice : Tropicof Cancer gets vertical rays
  • 37. sept. 21: autumnal equinox (fall):equator gets vertical rays.
  • 38. Dec. 21: winter solstice : Tropicof Capricorn gets vertical rays
  • 39. *Earth has seasons because of its23.50 tilt.
  • 40. in June, when the Northernhemisphere is “leaning” towards thesun, it is summer….because
  • 41. in December, when the Northernhemisphere is “leaning” away from thesun, it is winter…because..
  • 42. What day is this?
  • 43. What date is this? How do you know
  • 44. What date is this? how do you know?
  • 45. What date is this? how do you know?
  • 46. What day is “B” and how do youknow?
  • 47. “B” is JUNE 21st (the longest day in the northernhemisphere. I know because the north is leaningtowards the sun.
  • 48. What day is “D” and how do youknow?
  • 49. “D” is DECEMBER 21st (the shortest day in thenorthern hemisphere. I know because the north isleaning away the sun.
  • 50. What day is “C” and how do youknow?
  • 51. “C” IS SEPTEMBER 23RD
  • 52. “A” is MARCH 21ST.
  • 53. WHAT DAY IS THIS AND HOW DOYOU KNOW?
  • 54. WHAT DAY IS THIS AND HOW DOYOU KNOW?
  • 55. WHAT DAY IS THIS AND HOW DOYOU KNOW?
  • 56. It takes time for things toheat up.
  • 57. Even though solar noon has thegreatest angle of insolation1pm to 2pm is the hottest part of theday…
  • 58. *Even though June has themost insolation.July to August are thehottest part of the year…
  • 59. It takes time forthings to cool.
  • 60. even though December gets theleast insolation.This is why January to Febuary isthe coldest time of the year…
  • 61. *Duration of insolation:1.The length of daylighthours (or how long ittakes the sun to moveacross the sky).
  • 62. The sun’s apparent path
  • 63. Everyday the sun appears to rise inthe east, move across the southernsky & set in the west.
  • 64. On June 21st, the sun’s path is longestduring the summer solstice , so the dayis longest
  • 65. *ON DEC 21ST, the sun’s path isshortest during the winter solstice, sothe day is shortest.
  • 66. *The longer the sun’s path, thelonger the day is.What is the longest day inNew York state?What day is theshortest?
  • 67. the longer the day, the moresunlight an area gets.What is the longest day inNew York state?What day is theshortest?
  • 68. Please draw this picture, it will be on the regents
  • 69. There are four important days thatyou MUST know….
  • 70. What day is “A”?
  • 71. “A” is December 21st because the Sunhas a SHORTEST apparent pathacross the southern sky.
  • 72. What day is “C”?
  • 73. “C” is JUNE 21st because the Sun hasa LONGEST apparent path across thesouthern sky.
  • 74. What TWO days might “B”?
  • 75. “B” CAN MARCH 21ST ORSEPTEMBER 23RD.
  • 76. Which letter is December 21st? How doyou know?
  • 77. “A” is December 21st THE Sun has itsshortest apparent path across the sky
  • 78. Which letter is JUNE 21st? How do youknow?
  • 79. “D” is JUNE 21st the Sun has its longestapparent path across the sky
  • 80. Which letter is SEPTEMBER 23RD ORMARCH 21st ? How do you know?
  • 81. “B” is SEPTEMBER 23RD OR MARCH 21stbecause the Sun rises exactly EAST and setsexactly WEST.
  • 82. The sun’s path in New YorkState.
  • 83. Only between latitudes: 23 1/2N & 231/2S get vertical rays (900 rays)In New York state (latitude: 420N):On June 21st the angle of insolation is 71 1/20On Mar 21 & Sept 23rd: 480On Dec 21st: 24 1/20
  • 84. this is New York71 1/20 48024 1/20
  • 85. Remember this picture.
  • 86. What is the latitude of this NewYork State location? How do youknow?