25. Albedo and Air Mass

Q- The albedo of which one among the following is the highest?
(a) Cirrus cloud
(b) Cumulonimbus cloud
(c) Melting snow
(d) Sand
Ans: (a)


Q- Match of the following: List-I List-II
A. Humidity1. Weight of the actual amount of water vapour present in unit volume of air
B. Absolute humidity
2. Invisible Humidity amount of water vapour present in air
C. Specific humidity
3. Ratio of the humidity air’s actual water vapour content to its water vapour capacity at a given temperature
D. Relative humidity
4. Proportion of the mass of water vapour to the total mass of air. Codes A B C D
(a) 2 1 3 4
(b) 4 3 2 1
(c) 4 1 3 2
(d) 2 1 4 3
Ans: (d)


Q- Which one of following reflects back more sunlight as compared to other three?
(a) Sand desert
(b) Paddy crop land
(c) Land covered with fresh snow
(d) Pairie land
Ans: (c)


Q- Which one of the following is the correct sequence in terms of descending values of Albedo?
(a) Forest, snow, water
(b) Snow, forest, water
(c) water, snow, forest
(d) Forest, water, snow
Ans: (b)


Q- The world-wide jet stream that occurs in winter above the troposphere resulting from a very steep stratospheric thermal gradient is the
(a) Arctic jet stream
(b) Subpolar jet stream
(c) Polarnight jet stream
(d) Subtropical jet stream
Ans: (d)


Q- The earth-atmosphere system has a combined albedo of about, a number highly dependent on the local surface makeup, cover and cloud distribution
(a) 20% (b) 30%
(c) 40% (d)50%
Ans: (b)


Q- An instrument that measures air pressure is called
(a) barometer (b) isohaline
(c) seismometer (d) spherometer
Ans: (a)


Q- The approximate amount of the sun’s energy called insolation which reaches the Earth’s surface is
(a) 90% (b) 75%
(c) 45% (d) 50%
Ans: (d)


Q- Assertion (A): Albedo values can range between 3% for water at small zenith angles to over 95% for fresh snow. Reason (R): On average the Earth and its atmosphere typically reflect about 4% and 26% respectively of the sun’s incoming radiation back to space over the course of one year. Codes
(a) If (A) and (R) are true and (R) is the correct explanation of (A)
(b) If (A) and (R) are true, but (R) is not the correct explanation of (A)
(c) If (A) is true, but (R) is false
(d) If (A) is false, but (R) is true
Ans: (b)


Q- Which of the following statement is/ are correct?
(a) The term albedo (Latin for white) is commonly used to applied to the overall average reflection coefficient of an object
(b) The greenhouse effect, by trapping infrared radiation, can lower the albedo of the earth and cause global warming
(c) The albedo of an object will determine its visual brightness when viewed with reflected light
(d) All of the above
Ans: (d)


Q- Consider the following statements:
1. The Jet Streams are located near the altitude of the tropopause.
2. The polar Front Jet Stream is evident throughout the year, but the subtropical Jet Stream is strong only during the half-year centered on winter. Which of the following given above is/are correct?
(a) Only 1 (b) Only 2
(c) Both 1 and 2 (d) Neither 1 nor 2
Ans: (c)


Q- Consider the following statements:
1. The subtropical jet stream is evident throughout the year, but the polar front jet stream is strong only during the half-year centred on winter.
2. The migration of Equatorial Low (ITCZ) into the Southern Hemisphere in January is far less pronounced than its migration into the Northern Hemisphere in July. Which of the statements given above is/are correct?
(a) Only 1 (b) Only 2
(c) Both 1 and 2 (d) Neither 1 nor 2
Ans: (c)


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