ATMOSPHERE MCQS SET 12

ATMOSPHERE MCQS SET 12

111) Which of the following is/are characteristic of a depression in the southern hemisphere?
I. It is a mass of air whose isobars form an oval or circular shape
ll. Pressure is high in the centre and decreases towards the outside
lll. Air moves anti-clockwise
A) I only
B) ll only
C) l and Ill
D) All three

Answer: I only
   
112) Any type of rainfall has the following aspects:
A) ascent and descent of air
B) ascent of air leading to cooling and condensation
C) horizontal movement of air
D) all of above

Answer: ascent of air leading to cooling and condensation   
113) The line joining places of equal atmospheric pressure is termed
A) lsohyet
B) lsotherm
C) Contour
D) Isobar

Answer: Isobar
   
114) What causes snowfall?
A) When condensation takes place below 0∘ C and precipitation occurs in the form of flakes
B) When rain freezes into snow-flakes while passing through the atmosphere
C) When condensation takes place in form of fog and precipitation occurs as flakes
D) When the air temperature is much lower than surface temperature

Answer: When condensation takes place below 0∘ C and precipitation occurs in the form of flakes
   
115) Heat gain through insolation and heat loss through terrestrial radiation are equal approximately at which latitude?
A) 22∘ W North and South
B) 40∘ North and South
C) 90∘ North and South
D) 60∘ W North and South

Answer: 40∘ North and South

116) Which of the following places are favourably influenced by the Trade winds?
|. West Indies ll. Brazil III. Mexico IV. Medagascar
A) l and II
B) I, II, III and IV
C) III and IV
D) II and IV

Answer: I, II, III and IV
   
117) Which of the following are true regarding ionosphere?
I It is the uppermost layer of atmosphere
II. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized
III. This layer is responsible for reflecting back the radio waves transmitted from the earth
A) l and II
B) l and ll
C) ll and Ill
D) I, II and Ill

Answer: ll and Ill
   
118) The type of rainfall shown in figure is:

A) orographic
B) convectional
C) cyclonic
D) relief

Answer: convectional
   
119) Which of the following is the annual precipitation of an area?
A) The total actual amount of rain, snow, hail and sleet
B) The total amount of rain per year, irrespective of snow, hail and sleet
C) All forms of precipitation converted to the quantity of liquid water
D) All forms of precipitation measured after conversion to equal quantity of ice

Answer: All forms of precipitation converted to the quantity of liquid water
   
120) Fogs formed along, the sea-coast are due to:
A) radiation
B) convection
C) conduction
D) advection

Answer: advection