Climate & Ecosystem- Part 2

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by Teacher MAS0 views·Updated Aug 26, 2021
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  1. Mhm. Hello, grade nine.
  2. So this is part two of your.
  3. Less than three topic.
  4. One. Uh Climate and ecosystem.
  5. So as you can see here here guys, we have
  6. covered many topics, talking about the water and have water
  7. or ocean currents affect weather.
  8. And then here we're going to focus on air circulation
  9. and precipitation.
  10. So belt of uh rising and sinking air from a
  11. pattern around earth, hot air rises near the equator.
  12. It cools and sinks at the edge of the tropics,
  13. rises in the temperature zones and things over the polls.
  14. We have patterns of winds you can see here.
  15. I'll try.
  16. Okay, so patterns of winds, global air patterns from as
  17. heated air rises and cold air falls at the same
  18. time, air at the surface is also blowing toward the
  19. east or west.
  20. So the result is prevailing winds, which are the winds
  21. that most frequently blow across the region precipitation patterns.
  22. So precipitation is heaviest near the equator where moist air
  23. is heated and rises.
  24. It is also heavy, long coastlines where moist air blows
  25. on shore and is forced to rise precipitation.
  26. Lightest we're cool.
  27. Air sinks near the poles and at the edges of
  28. the tropic of the tropics where desserts are normally found
  29. most of storms, Okay, When two air masses of different
  30. temperatures or moisture moisture contents come together, some storms bring
  31. small amounts of rain or snow while others bring heavy
  32. winds and rain and cold damage.
  33. A tropical tropical cyclone, I'm sorry, tropical cyclone is an
  34. intense strain storm with strong winds that forms over oceans
  35. in the tropics.
  36. A tornado is a swirling uh funeral of wind that
  37. can reach 300 miles.
  38. You're talking about 500 km/h.
  39. Here is a question for you.
  40. How do air circulations and precipitation affect people?
  41. If you have an answer for that, try to answer
  42. it. We can simply uh remember that when built of
  43. air reach the surface, um they blow along the surfaces,
  44. winds that are often deflected east or west.
  45. Okay, yeah, So let's move on.
  46. Yeah. Yes.
  47. As you can see here guys, I have included for
  48. you, the global wind patterns here, as you can see,
  49. it shows the north pole these winds blow from areas
  50. of sinking air or high pressure to areas of rising
  51. air or low pressure.
  52. Try to uh I believe that uh usually charts images
  53. help you better grasp concepts.
  54. So you can see here on the other part, we
  55. have air cell and then we have the south pole.
  56. And as you can see here.
  57. Okay, so when the cool air reaches the point, a
  58. point where air is no longer rising from Earth's surface,
  59. it sinks to the ground.
  60. The air that has cooled and released its moisture is
  61. is pushed away from the rising warm air forming, Wentz
  62. high above Earth.
  63. As you can see in the um And the image
  64. here. And as you can see, because warm air is
  65. lighter than cool air, then warm air tends to rise.
  66. Look at the orange.
  67. Uh let's a line on the earth.
  68. Yeah. Okay.
  69. Now, um, I have included for you this, um, this
  70. big map that reflects on types of climates.
  71. So as you have learned temperatures, our warmest in the
  72. tropics and our coolest close to the polls, precipitation is
  73. greatest near the equator.
  74. These patterns of temperature and precipitation create world climate.
  75. World climate regions.
  76. As you can see on the map, climate regions are
  77. areas that share a similar climate.
  78. These are three major groups of climate regions.
  79. Warm climates include tropic weather, tropical wet, tropical, dry and
  80. humid subtropical climate temperature.
  81. Climates include um include maritime, a continental, warm summer and
  82. continental cool summer.
  83. Uh, and mediterranean dry and cold climate include the arid,
  84. semiarid sub architect tundra and ice cape climates.
  85. Okay, excuse me.
  86. So I believe our next step is to uh go
  87. over the unit lesson and they, sorry the lesson.
  88. Check to check on your understanding and if you happen
  89. to have any questions, please don't hesitate to send me
  90. an email or ask questions and costs.
  91. That's all for today.
  92. Guys, I'm looking forward to see you.
  93. Um tomorrow