56. When water freezes in the polar seas the salts
(a) form a layer on top
(b) remain in the sub-surface wa­
ter that does not freeze
(c) sink to the bottom
(d) partly freeze and partly sink
to the bottom
57. Which factors influence ocean
currents?
I. Coriolis force.
II. Local winds
III. Waves
IV. Continent shape
(a) I and IV (b) I, III and IV (c) I and III _(d) I, II and IV
58. The chief fishing grounds of the world occur where cold and warm currents meet. This is because
I. cold currents are rich in ni­trates-and phosphates which feed plankton.
II. such areas cause the water to
become well-aerated.
III. the warm current brings the
right temperature for marine
life.
(a) I only (b) II only
(c) I and II (d) I, II and III
59. Cold currents have cooling effect
on the shore of
(a) Peru
(b) Japan
(c) Western Europe (d) Alaska
60. The winter temperatures of north­western Europe are higher than those of eastern Europe in the same latitudinal zone because
(a) it is on the western side of the
continent
(b) it is near the sea
(c) it receives only light falls of
snow
(d) it lies under westerly winds
which blow over the Gulf
Stream Drift
61. Which of the following river stages
and features is/are wrongly
matched?
1. Mountain
stage
2. Plain stage
3. Plain stage
4. Mountain
stage
(a) 1 and 2
(c) 1, 3 and 4
: waterfalls
: oxbow lake : delta
: deposition
(b) 3 and 4 . (d) None
62. The solar radiation reflected back from the top of the atmosphere is
equal to
(a) 25% (c) 3~%
(b) 30% (d) 38%
63. The absence of which among the following causes the temperature of the atmosphere to decrease with ascent along with decreasing den­sity of air?
I. Vegetation
II. Water.
III. Carbon dioxide IV. Oxygen
V. Nitrogen
(a) I and II (b) III and IV
(c) II and III (d) II and V
64. What helps to maintain the heat
budget on the surface of the earth?
(a) Incoming insolation in short
waves and terrestrial radia­
tion in long waves
(b) The atmosphere absorbs heat
(c) Incoming solar radiation is
reflected
(d) The earth absorbs heat
65. Transfer of surplus heat from .the
lower latitudes to higher latitudes
is done by
I. ocean currents
II. planetary winds
III. tides
IV. waves
(a) I and II (b) III and IV
(c) I and IV (d) II and III
66. What do you understand by the
term' Advection'?
(a) Heat is transferred horizon­
tally by winds
(b) Heat is transferred horizon­
tally by both winds and ocean
currents
(c) Heat is transferred vertically
through the air
(d) Heat is transferred horizon­
tally through ocean currents
67. Land masses are heated and cooled much faster than water bodies. Identify the true statements in this regard.
I. Land gets heated by conduc­
tion
II. Water has a higher specific
heat
III. Only the surface layers of
water are heated
IV. Water gets heated by convec­
tion
(a) I, II and III
(b) II and III
(c) I and IV
(d) I, II and IV
68. Compared to other slopes in the northern hemisphere which is the warmest?
(a) East facing
(b) South facing
(c) North facing
(d) West facing
69. When can one record the loy
temperature of air?
(a) Just before sunrise
(b) At midnight
(c) At 3 a.m.
(d) No fixed time
70. At)ow elevation which among
following clouds are to be fow
. (a) Cirrus (b) Nimbu
(c) Cumulus (d) Stratus
71. The cauliflower shape is assl
ated with whicb of the follow
cloud formations?
(a) Stratus (b) Cumuli
(c) Nimbus (d) Cirrus
72. Which one of the following is j
a form of precipitation?
(a) Fog (b) Hail
(c) Snowfall (d) Rainfal
73. Agents of fog formation do j
inClude
(a) high relative humidity
(b) diurnal temperatures of sh
ranges
(c) winter season
(d) rapid radiation
74. What causes snowfall?
(a) When condensation ta~ place below 00 C and pred tation occurs in the form flakes.
(b) When rain freezes into snl flakes while passing thro4 the atmosphere.
(c) When condensation tak place in the form of fog aJ precipitation occurs as flak.
(d) When the air temperature much lower than surface tel perature.
75. Heat gain through insolation al heat loss through terrestrial radi tion are equal approximately
which latitude?
(a) 22Y.l° North and South
(b) 400 North and South
(c) 42W North and South
(d) 66Y.l° North and South
76. Any type of rainfall has the follo\l ing aspect/s:
(a) ascent and descent of air (b) horizontal movement of air (c) ascent of air leading to coolin
and condensation
(d) all of the above