Climatology 125 Important MCQS Part 2 FOR NTA UGC NET
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Q.26. The Coriolis effect is caused by
(A) Earth Rotation
(A) Earth Rotation and Revolution
(C) Earth Revolution
(D) Pressure Gradient
The key to the Coriolis effect lies in the Earth’s rotation. The Earth rotates faster at the Equator than it does at the poles. This is because the Earth is wider at the Equator. A point on the Equator has farther to travel in a day. The actual paths of winds-and of ocean currents, which are pushed by wind-are partly a result of the Coriolis effect.
Q.27.The rate of change of pressure per unit horizontal distance is called
(A) Pressure difference
(B) Pressure Gradient
(C) Geostrophic wind
(D) Perpendicular wind
Q.28. I.T.C.Z. Stands for
(A) Islands Tropical Convergence Zone
(B) Indian Tropical Convergence Zone
(C) Inner Trade Convergence Zone
(D) Inter Tropical Convergence Zone
The Intertropical Convergence Zone (ITCZ), known by sailors as the doldrums or the calms because of its monotonous windless weather, is the area where the northeast and the southeast trade winds converge. It encircles Earth near the thermal equator though its specific position varies seasonally.
Q.29. Winter rainfall in North-western part of India is mainly due to
(A) Western Disturbance
(B) North-East Monsoon
(C) North-west Monsoon
(D) Depression in the Bay of Bengal
Western disturbances, specifically the ones in winter, bring moderate to heavy rain in low-lying areas and heavy snow to mountainous areas of the Indian Subcontinent. They are the cause of most winter and pre-monsoon season rainfall across northwest India.
Q.30. The Origin of Western disturbance is
(A) Bay of Bengal
(B) Pacific Ocean
(C) Arabian Sea
(D) Mediterranean Sea
Q.31. Match List-I with List-II and select the correct answer using the code given below
|A. Snow Eater||1. Sirocco|
|B. Doctor Wind||2. Blizzard|
|C. Blood Rain||3. Chinook|
|D. Stormy cold and Powdery Wind||4. Harmattan|
Chinook (Snow eaters) – Hot, dry wind – The Rockies mountains
Harmattan (Guinea Doctor Wind) – Hot, dry wind – West Africa
Sirocco (Blood Rain)- Hot, moist wind – Sahara to the Mediterranean Sea
Blizzard (Stormy cold and Powdery Wind)- Cold wind – Tundra region
Q.32. The wind blowing between pressure gradient and Coriolis force is called
(A) Circular Wind
(C) Geostrophic Wind
The velocity and direction of the wind are the net result of the wind generating forces.
The winds in the upper atmosphere, 2 – 3 km above the surface, are free from frictional effect of the surface and are controlled by the pressure gradient and the Coriolis force.
An air parcel initially at rest will move from high pressure to low pressure because of the Pressure Gradient Force (PGF).
However, as that air parcel begins to move, it is deflected by the Coriolis force to the right in the northern hemisphere (to the left in the southern hemisphere).
As the wind gains speed, the deflection increases until the Coriolis force equals the pressure gradient force (2 – 3 km above the ground, friction is low and winds travel at greater speeds).
At this point, the wind will be blowing parallel to the isobars (perpendicular to Pressure Gradient Force). When this happens, the wind is referred to as geostrophic wind.
Q.33. Which of the following wind zone is called Hadley cell
(B) Trade Wind
(C) Polar Winds
(D) Near the Arctic
Q.34. The warm and dry dusty wind blowing in the Arabian Desert is called
Simoom is a strong, dry, dust-laden wind. The word is generally used to describe a local wind that blows in the Sahara, Israel, Palestine, Jordan, Iraq, Syria, and the deserts of Arabian Peninsula.
Q.35. The fall in temperature in troposphere is known as
(A) Adiabatic Rate
(B) Temperature Rate
(C) Lapse Rate
(D) Thermal Loss
Q.36. The Beaufort scale is related with
(A) Velocity of Winds
The Beaufort scale is a scale for measuring wind speeds. It is based on observation rather than accurate measurement. It is the most widely used system to measure wind speed today. The scale was developed in 1805 by Francis Beaufort
Q.37. Which of the following Beaufort number is carried by a Hurricane
The Beaufort scale is a scale that relates wind speed to conditions at sea (such as waves) or on land (such as sand storms). Each number on the Beaufort scale, which ranges from 0 to 12, corresponds to the strength/ speed of the winds, the greater the number the stronger the winds. On the Beaufort scale Hurricane force winds are anything with a wind speed in excess of 73 miles per hour (117 kilometers per hour).
Q.38. What is the major wind related phenomenon responsible for summer drought in Mediterranean type of region?
(A) Shifting of trade winds pole wards in summer
(B) Shifting of trade winds equator wards in summers
(C) Blowing of Westerlies from the continents in summers
(D) Blowing south-westerly
Q.39. Who among the following observed that summer heating of Tibetan Plateau was the most important factor in the monsoon circulation over India?
(B) P. Koteswaram
Q.40. The Westerlies and trade wind are example for following winds
Q.41. The full form of MONEX is
(A) Monsoon Experiment
(B) Monsoon Expedition
(C) Monsoon Extension
(D) Monsoon Research Export Group
Q.42. The lines joining the places of equal pressure at sea level are called
Q.43. The “Shrieking Sixties” are related to
(A) High Tides
(B) High Velocity Winds
(C) Heavy Rainfall
The Roaring 40s, Furious 50s and Screaming 60s are winds that batter the Southern Ocean, on the fringes of Antarctica. Their names are nods to the latitudes at which they occur in the Southern Hemisphere, and are terrifying in the intensity they evoke. And with just cause: long feared for the devastation they could wreak, their very existence shaped the shipping routes used by the boats that sailed these waters.
(The Roaring Forties are strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The strong west-to-east air currents are caused by the combination of air being displaced from the Equator towards the South Pole, the Earth’s rotation, and the scarcity of landmasses to serve as windbreaks.)
Q.44. The occluded front is formed
(A) In cold fronts
(B) In warm fronts
(C) When both warm and cold fronts coalesce
(D) When cold front overtakes warm front
An occluded front is defined as a front formed, when a cold front over takes a warm front.
The cold front moves more rapidly than the warm front with the result that the warm sector is progressively reduced in size ultimately the cold front over takes the warm front and completely displaces the warm air at the ground.
Ultimately, the cold and warm fronts combine into one. Thus, a long and backward swinging occluded front comes into existence.
Q.45. Seasonal Contrast are maximum in
(A) Low Latitudes
(C) High Latitudes
Q.46. Air movement in the troposphere is caused by
(A) Solar Wind
(B) Convective Current
(C) Gravitational Force
(D) Air Pressure
Q.47. The unit of air pressure measurement is
(C) Metres per second
(D) Hecta Pascal
Q.48. Ferrel’s law is concerned with the
(A) Direction of Winds
(B) Velocity of Winds
(C) Intensity of Waves
(D) Heating and Cooling of Atmosphere
Ferrel’s law involves the deflection of a particle (water, air, ice, or the like) in motion of the Coriolis effect. The American meteorologist W. Ferrel was the first to describe the Coriolis effect on moving particles. As a result of this action, winds, oceanic currents, and drift ice are deflected rightward (with reference to their original motion) in the Northern Hemisphere and leftward in the Southern Hemisphere.
Q.49. The temperature at which water vapours condense, is the
(A) Relative humidity
(B) Condensation point
(C) Dew point
(D) Evaporation point
Q.50. Which one of the following is not a factor to affect the atmospheric pressure?
(B) Presence of water vapour