38. If you are standing west of a smokestack and smoke from the stack is driftin
ID: 118141 • Letter: 3
Question
38. If you are standing west of a smokestack and smoke from the stack is drifting over your head, the wind direction is ________.
West
East
North
South
39. Suppose the surface air temperature is 16°C. If the base of a cumulus cloud directly above you is 2 km, use your knowledge of dry and moist adiabatic lapse rates to approximate the temperature of rising air parcels at 3 km above you in the cloud.
-2°C
-6°C
-14°C
-10°C
0°C
40. The dry and moist adiabatic lapse rates are different because ___________.
unsaturated air is always stable
a saturated air parcel expands more rapidly than an unsaturated air parcel
dry air weighs less than moist air
latent heat of condensation slows the cooling rate inside a rising parcel
greenhouse warming only works when parcels are saturated
41. The lowest 1 km of the troposphere is most likely to become less stable to vertical displacements of air parcels ________.
On a clear, calm morning before the sun comes up
During a snowstorm
On a hot summer day
During an ice storm
When it is conditionally unstable
42. An unsaturated air parcel with a temperature of 10°C is lifted 1500 meters. Assume that at this new level, the parcel is the same temperature as the environment. The temperature of the environment is closest to ________.
19°C
13°C
3°C
-3°C
Search in Documen share ^ Home Insert Design Layout References Mailings » Calibri (Body) . 10.5- A-A- A-ng Paste ' 38. If you are standing west of a smokestack and smoke from the stack is drifting over your head, the wind direction is a West b. East c. North d. South 39. Suppose the surface air temperature is 16 C. If the base of a cumulus cloud directly above you is 2 km, use your knowledge of dry and moist adiabatic lapse rates to approximate the temperature of rising air parcels at 3 km above you in the cloud a -2"C e. -14°C d. 10°C 4·The dry and moist adiabatic lapse rates are different because a unsaturated air is always stable b. a saturated air parcel expands more rapidly than an unsaturated air parcel c. dry air weighs less than moist air d. latent heat of condensation slows the cooling rate inside a rising parcel e greenhouse warming only works when parcels are saturated 41. The lowest 1 km of the troposphere is most likely to become less stable to vertical displacements of air parcels a. On a clear, calm morning before the sun comes up b. During a snowstonm c. On a hot summer day d. During an ice storm e. When it is conditionally unstable 42. An unsaturated air parcel with a temperature of 10 C is lifted 1500 meters. Assume that at this new level, the parcel is the same temperature as the environment. The temperature of the environment is closest to a 19°c b. 13*C 43. Under which set of the conditions below would you expect wet wash hanging outside on a clothesline to dry the fastest? e Humidit 15 mph Page 8 of 9 100%Explanation / Answer
38. West
39.
Dry adiabatic lapse rate= 9.80C/km
Moist adiabatic lapse rate= 6.50C/km
therefore
Temperature at the base of the cloud is (16-19.6)= -3.60C
Temperature at 3ms above the ground (1km above the base)= (-3.6-6.5)= -10.10C~ -100C
40. The dry and moist adiabatic lapse rates are different because latent heat of condensation slows the cooling rate inside a rising parcel.
41. The lowest 1 km of the troposphere is most likely to become less stable to vertical displacements of air parcels during a hot summer day (this causes the air column to heat and rise, this makes the air column unstable)
42. An unsaturated air parcel with a temperature of 10°C is lifted 1500 meters. Assume that at this new level, the parcel is the same temperature as the environment. The temperature of the environment is closest to 190C (using the dry adiabatic lapse rate)
43. Condition d is favorable because the air is warmer with addition to the relative humidity being the lowest, since the day is also windy, the clothes dry the fastest in this condition.
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