Chapter 25

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Anonymous
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277082
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Chapter 25
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2014-06-17 21:46:17
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chapter 25 information
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  1. weather maps
    • collect data
    • computers plot and analyze data
    •    predict weather
    •    accuracy difficult
    • identify points of equal pressure with isobars
  2. define isobars
    lines
  3. weather prediction types
    • continuity
    • trend
    • probability
    • extended
  4. hurricanes
    energy comes from latent heat released from condensing water vapor
  5. tornados
    funnel shaped column of air rotating around a low-pressure core that reaches from cumulonimbus cloud to the ground
  6. thunderstorms
    humid air rising, cooling and condensing into single cumulus cloud
  7. midlatitude cyclones
    • area of low pressure around which winds flow
    • coriolis force
    • air converges in the center and forced upward
  8. types of fronts
    • cold front
    • warm front
    • occluded front
    • stationary front
  9. define stationary front
    neither air mass is moving
  10. define occluded front
    • cold front takes over warm front
    • vice versa
  11. define warm front
    warm air moves into space occupied by nonmoving cold air mass
  12. define cold front
    cold air masses move into space occupied by nonmoving warm air
  13. lifting mechanisms
    • conventional lifting
    • orographic lifting
    • frontal lifting
  14. 6 categories of air masses
    • maritime arctic
    • continental arctic
    • maritime polar
    • continental polar
    • maritime tropical
    • Continental tropical
  15. maritime arctice
    • mA
    • cool
    • moist
    • unstable
  16. continental artic
    • cA
    • cold 
    • dry
    • stable
  17. maritime polar
    • mP
    • cool
    • moist 
    • unstable
  18. continental polar
    • cP
    • cold
    • dry
    • stable
  19. marinetime tropical
    • mT
    • warm
    • moist
    • usualy unstable
  20. continental tropical
    • cT
    • hot
    • dry
    • stable alfot
    • unstable at surface
  21. formation of precipitation
    • formation of dust
    • updrafts
    • growth of stationary drops of water
    • falling of raindrops
  22. clouds with vertical development
    • cumulus
    • cumulonimbus
  23. cumulonimbus
    • cumulus clouds turned dark
    • storms
    • become thunderheads
  24. cumulus
    • floating cotton
    • sharp outlines
    • flat base
    • white to light grey
    • 1,000m
    • rising towers
  25. nimbostratus
    • dark
    • produce precipitation
  26. stratocumulus
    • low, bumpy layer
    • horizontal rows and patches
    • sometimes round
    • light to dark grey
  27. stratus
    • uniformly grey
    • cover whole sky
    • light precipitation
  28. low clouds
    • stratus
    • stratocumulus
    • nimbostratus
  29. altocumulus
    • grey and puffy
    • parallel waves or bands
    • larger than cirrocumulus
    • darker than cirrocumulus
  30. altostratus
    • blue grey to grey color
    • cover sky
    • diffuse sunlight
    • before a storm
  31. middle clouds
    • altostratus
    • altocumulus
  32. cirrocumulus
    • rounded, white puffs
    • patchy
    • cover small portion of sky
    • ripples
    • wavy
  33. cirrostratus
    • thin, sheet like
    • cover entire sky
    • refract light
  34. cirrus
    • wispy
    • west to east
    • fair weather
  35. cloud development depends on
    • environmental lapse rate
    • dry adiabatic lapse rate
    • moist adiabatic lapse rate
  36. dry adiabatic lapse rate
    the rate of cooling of dry air
  37. air pressure
    movement of air molecules into each other
  38. dew point
    temperature at which saturation occurs
  39. relative humidity
    amount of water vapor in air

    amount of water vapor air can hold at that temperature
  40. humidity
    mass of water vapor a given volume of air contains

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