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WX 201 - Survey of Meteorology: Part Questions and Answers (100% Pass)2 $15.49   Add to cart

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WX 201 - Survey of Meteorology: Part Questions and Answers (100% Pass)2

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How is the air cooled so that a cloud will form? Adiabatic Temperature Changes air parcel an isolated volume or mass of air environment the air surrounding the parcel adiabatic process a process during which no net exchange of energy takes place between a parcel and its environment (i....

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  • November 10, 2024
  • 59
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • WX 201
  • WX 201
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WX 201 - Survey of Meteorology:
Part Questions and Answers (100%
Pass)2
How is the air cooled so that a cloud will form?


✓ Adiabatic Temperature Changes




air parcel


✓ an isolated volume or mass of air




environment


✓ the air surrounding the parcel




adiabatic process


✓ a process during which no net exchange of energy takes place

between a parcel and its environment (i.e. energy is conserved in the

parcel)




Adiabatic Heating and Cooling




Master01 | October, 2024/2025 | Latest update

, 1|Page | © copyright 2024/2025 | Grade A+

✓ temperature change, which takes place in all upward and downward

moving air




Adiabatic Process


✓ Cooling or warming an air parcel solely by rising (expansion) or sinking

(compression); no energy is gained or lost by the parcel




Dry Adiabatic Lapse Rate


✓ The rate at which the temperature of a parcel of dry, unsaturated air

decreases as the parcel is lifted in the atmosphere (10 ̊C/km).




Moist Adiabatic Lapse Rate


✓ The rate at which the temperature of a parcel of saturated air

decreases as the parcel is lifted in the atmosphere (~6 ̊C/km); not a

constant like the dry adiabatic lapse rate but is dependent on parcel

temperature and pressure.




Dew Point Temperature Lapse Rate


✓ The dew point temperature of a parcel of air changes as the parcel

moves up and down in the atmosphere.




Master01 | October, 2024/2025 | Latest update

, 1|Page | © copyright 2024/2025 | Grade A+

If an air parcel is unsaturated, the dew point lapse rate is...


✓ 2 ̊C/km




If an air parcel is saturated, the dew point lapse rate is...


✓ ~6 ̊C/km




Cloud Formation







Lifting Condensation Level (LCL)


✓ where cloud bases form; saturation reached at level -> condensation -

> cloud forms




Cloud Base (LCL) Heights







Reasons For Cloud Development




Master01 | October, 2024/2025 | Latest update

, 1|Page | © copyright 2024/2025 | Grade A+

✓ -Convection

✓ -Lifting along topography (orographic uplift)

✓ -Convergence for air

✓ -Lifting along weather fronts




Thermals


✓ The rising bubbles of hot air




Fair Weather Cumulus (Cumulus Humulis)


✓ the result of convective lifting




Convection


✓ Positively buoyant air (o.e., Air Parcels warmer than their environment)

rising; note - all "cumulus-like" clouds are the result of convection

(including Thunderstorms)




Orographic Lift


✓ Process by which air is forced to rise by mountains (can be a trigger

mechanism for clouds and thunderstorms)




Convergence

Master01 | October, 2024/2025 | Latest update

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