ATMOSPHERE MCQS SET 10

ATMOSPHERE MCQS SET 10

91) Precipitation takes place when:

A) the sky is overcast with clouds
B) temperature of moisture in air suddenly increases
C) temperature of moisture in air sharply decreases
D) winds begin to blow in a circular motion

Answer: temperature of moisture in air suddenly increases
   
92) Dew point is:
A) amount of actual water vapour present per unit volume of air
B) incoming solar radiation
C) a low pressure system in lower atmosphere
D) a temperature at which a given sample of air becomes saturated

Answer: a temperature at which a given sample of air becomes saturated   
93) 'Cloud burst' means:
A) presence of scattered flakes of cloud in the sky
B) abnormally heavy downpour of rain, associated with a thunderstorm
C) formation of artificial rain
D) sowing of seeds of a crop in a cloudy weather

Answer: abnormally heavy downpour of rain, associated with a thunderstorm
   
94) The amount of actual water vapour of air is known as:
A) absolute humidity
B) dew point
C) relative humidity
D) condensation point

Answer: absolute humidity
   
95) Water vapour beyond the dew point results in:
A) precipitation
B) hailstorm
C) condensation
D) formation of ice

Answer: condensation

96) Which type of rainfall leads to the formation of the windward and the leeward side?
A) Orographic
B) Cyclonic
C) Convectional
D) All of these

Answer: Orographic
   
97) Which of the following types of rainfall is often accompanied with lightning and thunder?
A) Orographic
B) Convectional
C) Frontal
D) None of these

Answer: Convectional
   
98) The contact of two air masses differing sharply in humidity originates:
A) tropical cyclones
B) inter-tropical convergence
C) temperate cyclones
D) tropospheric instability

Answer: temperate cyclones
   
99) Wind in the Southern hemisphere is deflected towards left due to:
A) temperature variations
B) rotation of the earth
C) difference in pressure
D) difference in water content

Answer: rotation of the earth
   
100) Smog is likely to occur:
A) around valleys
B) near lakes
C) on calm, clear and cool nights
D) near the industrial areas

Answer: near the industrial areas