Clouds

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Notes for 3/13

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  • Clouds

    1. 1. ObjectivesDescribe humidity and relative humidityExplain how clouds are formedIdentify the basic characteristics of different cloud groups
    2. 2. QuestionHow are clouds formed?
    3. 3. Humidity
    4. 4. HumidityOn warm summer days, whatdoes it feel like outside?
    5. 5. Humidity
    6. 6. HumidityConcept: Warm air holds morewater vapor than cool air.
    7. 7. HumidityConcept: Warm air holds morewater vapor than cool air.Why?
    8. 8. HumidityConcept: Warm air holds morewater vapor than cool air.Why?Fast moving air molecules leavemore space for water molecules
    9. 9. HumidityConcept: Warm air holds morewater vapor than cool air.Why?Fast moving air molecules leavemore space for water moleculesWater molecules are moving fastso they can’t stick together
    10. 10. Humidity
    11. 11. HumidityHumidity: The amount of watervapor in air
    12. 12. HumidityHumidity: The amount of watervapor in airRelative humidity: The amountof water vapor in air comparedto how much water vapor the aircan hold.
    13. 13. Cloud Formation
    14. 14. Cloud FormationThink back to yesterday ...
    15. 15. Cloud FormationThink back to yesterday ...How does a cloud form?
    16. 16. Cloud Formation
    17. 17. Cloud FormationWe are going to add to thatpicture
    18. 18. Cloud FormationWe are going to add to thatpictureWater molecules cannot justslow down and stick to eachother
    19. 19. Cloud FormationWe are going to add to thatpictureWater molecules cannot justslow down and stick to eachotherMust stick to something elsefirst.
    20. 20. Cloud Formation
    21. 21. Cloud FormationCondensation Nuclei: Smallparticles in the atmosphere thatwater molecules can cling to
    22. 22. Cloud FormationCondensation Nuclei: Smallparticles in the atmosphere thatwater molecules can cling toMay be salt, dust, or anothersolid particle
    23. 23. Cloud Formation
    24. 24. Cloud FormationOrographic Lifting
    25. 25. Cloud FormationOrographic Lifting Wind blowing along the Earth’s surface runs into a mountain
    26. 26. Cloud FormationOrographic Lifting Wind blowing along the Earth’s surface runs into a mountain Air has nowhere to go but up
    27. 27. Cloud FormationOrographic Lifting Wind blowing along the Earth’s surface runs into a mountain Air has nowhere to go but up As the air rises it cools and condenses
    28. 28. Cloud Formation
    29. 29. Cloud FormationAir Mass collisions
    30. 30. Cloud FormationAir Mass collisions If a cold mass of air and a warm mass of air collide, what do you think happens?
    31. 31. Cloud FormationAir Mass collisions If a cold mass of air and a warm mass of air collide, what do you think happens? The warm air is forced up
    32. 32. Cloud FormationAir Mass collisions If a cold mass of air and a warm mass of air collide, what do you think happens? The warm air is forced up It cools and forms a cloud
    33. 33. Cloud Formation
    34. 34. Cloud FormationSea Breeze
    35. 35. Cloud FormationSea Breeze Cool air over the ocean moves towards land
    36. 36. Cloud FormationSea Breeze Cool air over the ocean moves towards land When the cool air reaches land it warms and rises
    37. 37. Cloud FormationSea Breeze Cool air over the ocean moves towards land When the cool air reaches land it warms and rises Rising air cools and condenses
    38. 38. Cloud FormationSea Breeze Cool air over the ocean moves towards land When the cool air reaches land it warms and rises Rising air cools and condenses Forms clouds
    39. 39. Cloud Formation
    40. 40. Cloud FormationStability: The ability of an airmass to resist rising
    41. 41. Cloud FormationStability: The ability of an airmass to resist risingThe warmer an air mass, the lessstable it is
    42. 42. Cloud FormationStability: The ability of an airmass to resist risingThe warmer an air mass, the lessstable it isThe cooler an air mass the morestable it is
    43. 43. Types of Clouds
    44. 44. Types of CloudsWords
    45. 45. Types of CloudsWords Strato - Low (below 2000 m)
    46. 46. Types of CloudsWords Strato - Low (below 2000 m) Alto - Middle (2000 m - 6000 m)
    47. 47. Types of CloudsWords Strato - Low (below 2000 m) Alto - Middle (2000 m - 6000 m) Cirro - High (Above 6000 m)
    48. 48. Types of Clouds
    49. 49. Types of CloudsWords
    50. 50. Types of CloudsWords Cirrus - Hair (Stringy clouds)
    51. 51. Types of CloudsWords Cirrus - Hair (Stringy clouds) Cumulus - Pile (Puffy clouds)
    52. 52. Types of CloudsWords Cirrus - Hair (Stringy clouds) Cumulus - Pile (Puffy clouds) Stratus - Layer (sheet of clouds)
    53. 53. Types of CloudsWords Cirrus - Hair (Stringy clouds) Cumulus - Pile (Puffy clouds) Stratus - Layer (sheet of clouds) Nimbus - Cloud (Low, dark, rain clouds)
    54. 54. Types of Clouds
    55. 55. Types of CloudsKeep your words out and answerthe following questions
    56. 56. Types of CloudsKeep your words out and answerthe following questionsWhat is the height and shape ofa stratocumulus cloud?
    57. 57. Types of CloudsKeep your words out and answerthe following questionsWhat is the height and shape ofa stratocumulus cloud? A. Middle and Flat
    58. 58. Types of CloudsKeep your words out and answerthe following questionsWhat is the height and shape ofa stratocumulus cloud? A. Middle and Flat B. Middle and Puffy
    59. 59. Types of CloudsKeep your words out and answerthe following questionsWhat is the height and shape ofa stratocumulus cloud? A. Middle and Flat B. Middle and Puffy C. Low and Puffy
    60. 60. Types of CloudsKeep your words out and answerthe following questionsWhat is the height and shape ofa stratocumulus cloud? A. Middle and Flat B. Middle and Puffy C. Low and Puffy D. Low and Flat
    61. 61. Types of Clouds
    62. 62. Types of Clouds
    63. 63. Types of CloudsWhat is the height and shape ofa stratocumulus cloud?
    64. 64. Types of CloudsWhat is the height and shape ofa stratocumulus cloud? C. Low and Puffy
    65. 65. Types of Clouds
    66. 66. Types of CloudsWhat is the height and shape ofa cirrus cloud?
    67. 67. Types of CloudsWhat is the height and shape ofa cirrus cloud? A. low and flat
    68. 68. Types of CloudsWhat is the height and shape ofa cirrus cloud? A. low and flat B. high and stringy
    69. 69. Types of CloudsWhat is the height and shape ofa cirrus cloud? A. low and flat B. high and stringy C. Middle and puffy
    70. 70. Types of Clouds
    71. 71. Types of CloudsWhat is the height and shape ofa cirrus cloud?
    72. 72. Types of CloudsWhat is the height and shape ofa cirrus cloud? B. high and stringy
    73. 73. Types of Clouds
    74. 74. Types of CloudsWhat is the height and shape ofan altostratus cloud?
    75. 75. Types of CloudsWhat is the height and shape ofan altostratus cloud? A. middle and flat
    76. 76. Types of CloudsWhat is the height and shape ofan altostratus cloud? A. middle and flat B. high and stringy
    77. 77. Types of CloudsWhat is the height and shape ofan altostratus cloud? A. middle and flat B. high and stringy C. low and puffy
    78. 78. Types of Clouds
    79. 79. Types of CloudsWhat is the height and shape ofan altostratus cloud?
    80. 80. Types of CloudsWhat is the height and shape ofan altostratus cloud? A. middle and flat
    81. 81. WHAT IS IT? Nimbostratus
    82. 82. WHAT IS IT? Stratocumulus
    83. 83. WHAT IS IT? Cumulus
    84. 84. WHAT IS IT? Altocumulus
    85. 85. WHAT IS IT? Cirrocumulus
    86. 86. WHAT IS IT? Cirrus
    87. 87. WHAT IS IT? Cirrostratus
    88. 88. WHAT IS IT? Cumulonimbus

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