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UPSC Geography Page: 5
3757.Consider the following statements which describe the properties of a particular metal
1. It as a valuable metal of which the major ore is Wolfram.
2. It is self hardening which it imparts to the steel when alloyed with the steel.
3. Steel when alloyed with this metal, is used in manufacturing of ammunitions, armour plates, heavy guns etc.
4. Its alloys are heat resistant, corrosion resistant and hardfacing.
Choose the correct metal from the options
Tungsten
Chromium
Copper
Titanium
3758.Continental Drift theory by Wegener changed the perceptions about the Earth’s crust.
Consider the statements regarding this theory.
1) Sialic masses used to float over the Sima without any resistance being offered by Sima.
2) Earlier all land masses were united to form a massive landmass known as ‘Panthalasa’.
3) Ocean floors were considered to be stable and never moved.
Choose the correct statement/s from the following.
1 only.
1, 3 only.
2, 3 only.
None of the above.
Explanation:
Continental Drift theory by Wegener tried to solve the problem of location of young foldmountains.2nd statement: panthalasa was the name given to single vast ocean and pangaea was thename given to united massive landmass.
3759.Consider the statements regarding different types of plates in ‘Plate Tectonic Theory’.
1) Destructive plate boundary is one in which continuous upwelling of molten material ie lava takes place.
2) Divergent plate boundary is one which two plates slide past one another thus neither creating nor destroying continental landmass.
3) Convergent plate boundary is one in which one plate overrides the other plate.
Choose the correct statement/s from the following code.
1, 2 only.
2 only.
3 only.
All the above.
Explanation:
Divergent plate boundary or constructive plate boundary:A tectonic boundary where two plates are moving away from each other and new crust isforming from magma that rises to the Earths surface between the two plates. The middle ofthe Red Sea and the mid-ocean ridge (running the length of the Atlantic Ocean) aredivergent plate boundaries.Convergent plate boundary or destructive plate boundary:It is a tectonic boundary where two plates move towards each other. If thetwo plates are ofequal density, they usually push up against each other,forming a mountain chain. If they areof unequal density, one plate usually sinks beneath the other in a subduction zone.The western coast of SouthAmerica and the Himalayan Mountains are convergent plate boundaries. Also called active margin , collision zone.Transform plate boundary:Transform plate boundary is one in which two plates slide past one another thus neithercreating nor destroying continental landmass.
3760.Consider the statements regarding earthquake (seismology).
1) Primary waves are analogous to sound waves and it can travel through liquid medium.
2) Secondary waves are analogous to water ripples and it cannot pass through liquid medium.
3) Surface waves are most destructive and slowest among the three waves (primary, secondary, surface waves).
Choose the incorrect statement/s from the following codes.
1, 2 only.
3 only.
2, 3 only.
None of the above.
Explanation:
Primary waves (P-waves) are compressional waves that are longitudinal in nature. Thesewaves can travel through any type of material, including fluids, and can travel at nearlytwice the speed of Secondary waves.Secondary waves (S-waves) are shear waves that are transverse in nature. S-waves cantravel only through solids, as fluids (liquids and gases) do not support shear stresses.
3761.Consider the statements regarding volcanoes.
1) More than 95% of the global volcanoes are along the plate boundaries.
2) High intensity volcano types like Visuvius type, Peelean type etc are concentrated in the convergent plate boundaries.
3) Low intensity volcano like Mid Atlantic Ridge are concentrated in the divergent plate boundary regions.
Choose the correct statement/s from the following codes.
1, 2 only.
2, 3 only.
1, 3 only.
All the above.
Explanation:
In the convergent plate boundaries, one plate is subdued by the other plate and the platewhich is pushed underneath the other plate goes to greater depth and starts melting, thisresult in high intensity volcanoes.While in divergent plate boundaries, the plate move away from each other thus thinning thecrust and thus volcano rises easily to the surface without any force being needed to apply torise to the Earth’s surface.
3762.Every relief can be classified into different types of reliefs.
Match the following.
1) 1st Order relief --- continental plates.
2) 2nd Order relief --- plains and deltas.
3) 3rd Order relief --- fold mountains.
Choose the correctly matched pair from the following codes.
1 only.
1, 2 only.
1, 3 only.
None of the above.
Explanation:
2nd Order reliefs are the one formed because of endogenic events like volcano, earthquakeor plate movents either constructive or destructive plate boundaries. Ex: fold mountains,block mountains etc.3rd Order reliefs are the formed because of exogenic events. Ex: flood plains, deltas etc.
3763.In Tamil Nadu region, evergreen forests are found despite hot and dry summers with temperature of about 28 degree Celsius.
What is/are the reason/s?October to December.
Annual rainfall of about 100cms mostly from the North East monsoon winds during
A humidity of more than 75% throughout the year.
Red and yellow soil found in Tamil Nadu region can retain moisture well.
Both 1 and 2.
Explanation:
Humidity is the main reason for trees not shedding their leaves during prolonged dryseasons. Red and Yellow soils are not good at retaining moisture unlike Black soil which isvery good at retaining moisture.
3764.In which part of the ocean does the typical example of reversal of ocean current can be observed which is guided by the planetary wind system?
Northern part of Indian Ocean.
Southern part of Indian Ocean.
North Atlantic Ocean.
South Pacific Ocean.
Explanation:
In the Northern part of Indian Ocean, the ocean currents are clearly guided by the planetarywinds. There is complete reversal of the ocean currents direction right from the AfricanEastern coast to the Indian coast. Ex: Somalian current flows from North to South in theAfrican East coast during winters when there is off shore North East Trade wind. The samecurrent reverses its direction when there is South West Monsoon wind. It flows from Southto North.
3765.Mass wasting or mass movement is a common phenomenon at the foothills of big,steep mountains like Himalayas, Atlas etc.
Consider the following statements regarding mass wasting.
1) Rock debris that moves down the hill is mainly derived from weathering.
2) The rock debris moves down mainly because of earthquake, volcano, moving water etc.
Choose the correct statement/s from the following codes.
1 only.
2 only.
Both.
None of the above.
Explanation:
Rock debris move under the influence of Gravitational force and this movement is aided ortriggered by volcano, earthquake, moving water etc.
Arcuate deltas are the most common type of deltas, example being Ganga delta, Rhine delta, Nile delta etc.
Consider the following statements regarding this type of delta.
1) It is formed when river water is denser than sea water.
2) It is formed when river water is as dense as sea water.
3) It is known as growing delta.
Choose the correct statement/s from the following codes.
Solution:
It is known as growing delta because the sedimentation from the river grows towards thesea every year. Delta formed when river water is denser than sea water is known asestuarine. Ex: Narmada River which flows westwards and joins Arabian sea and formsestuary. Bird-Foot delta is formed when the river water is less dense than the sea water. Ex:Mississippi delta.
3767.The atmosphere is a gaseous envelope which surrounds Earth’s surface.
Consider the following statements regarding the Earth’s atmosphere.
1) Rotation of Earth helps in binding of atmosphere to Earth’s surface.
2) It sustains life on the Earth by not allowing Earth to become too hot or too cold.
3) Content of water vapour increases from the equator towards the poles.
Choose the correct statement/s from the following code.
1, 2 only.
2 only.
2, 3 only.
All the above.
Explanation:
Rotation of earth induces centrifugal force which pushes any object away from the Earth’ssurface. Thus rotation doesn’t help atmosphere to bind to Earth’s surface.Atmosphere filters the harmful rays from the Sun and also helps in controlling thetemperature so that life can be sustained.Content of water vapour is highest near to surface of the Earth ie upto some 5 kms from thesurface, beyond that it reduces drastically.
3768.Consider the following
1. These clouds are one of the highest clouds in the atmosphere
2. They are also called thunderheads and produce rains, thunder and lightning
Select the correct answer based on above statements
Stratocumulus
Cumulonimbus
Nimbostratus
Cirrocumulus
3769.Generally the incoming Solar radiations are absorbed, scattered and reflected in the
atmosphere. Based on the above statement which of the following is/are correctly
matched?
1) Clouds --- reflection.
2) Atmospheric gases --- scattering.
3) Dust particles, haze --- absorption.
Choose the correct code from the codes below.
1 only.
1, 2 only.
1, 3 only.
All the above.
Explanation:
Atmospheric gases especially green house gases absorb radiations and heat up theatmosphere. Dust particles and haze are largely involved in the scattering of the light.
3770.Consider the statements regarding the cyclones.
1) In a cyclone, the air circulation is anti-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
2) Tropical cyclones being embedded in the Trade winds, in general move from East to West.
3) Temperate cyclones being embedded in the Westerlies, in general move from West to East.
Choose the correct statement/s from the following codes.
1, 2 only.
2, 3 only.
1, 3 only.
All the above.
3771.Coral reefs destruction is a major concern in the backdrop of Climate Change. Consider
the statements regarding the coral reefs.
1) Coral reefs are example of a symbiotic relation between coral polyps and
photosynthetic algae.
2) Coral reefs are confined to deep waters.
3) Coral reefs are marine equivalent of tropical rain forest.
Which of the statement/s is/are true?
1, 2 only.
2, 3 only.
1, 3 only.
All the above.
3772.Consider the following statements.
1) Pelagic waters are the surface waters between two shorelines extensive upto the depth of 500 meters.
2) Benthic waters extend from the depth of 500 meters to the base of the ocean.
Which of the following statement/s is/are true?
1 only.
2 only.
Both the above.
None of the above.
3773.Frank Joseph land of Russia makes the northern most limit of summer vegetation in Tundra climate. Which is the type of precipitation that occurs in this region that supports this vegetation?
A very low cyclonic depression that causes light rainfall in the form of snow fall.
Frontal precipitation that causes precipitation in the form of snow fall.
Convectional type of precipitation.
Both 1 and 2.
Explanation:
No cyclonic depression exists because of very low temperature and also weak pressuregradient.Convectional precipitation to occur, the air on the land surface should be heated to largerextent so that it becomes lighter thus rises and condenses to give precipitation. But very lowtemperature in the higher latitudes causes no convectional precipitation.
3774.With reference to frontal precipitation, consider the following statements:
1. Precipitation associated with a warm front is of long duration.
2. Heavy but short duration precipitation occurs because of stationary front.
Which of the statements given above is/are correct?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
Precipitation associated with a warm front is of long duration. Heavy but short duration precipitation occurs because of cold front.
3775.A particular ocean has a broad shape of ‘S’ in the North South orientation. Which is that ocean?
Atlantic Ocean.
Pacific Ocean.
Indian Ocean.
Southern Ocean.
3776.Consider the following statements regarding the atomic minerals.
1. Uranium occurs both in the earth’s crust as well as sea water.
2. India has one of the richest reserves of thorium in the world.
3. US have the highest reserves of uranium in the world.
Which of the above statements are correct?
1 only.
1, 2 only.
2, 3 only.
All the above.
Explanation:
Australia has the highest reserves of uranium and not the US.
3777.The best way to improve crop production in India is to increase the crop intensity ie by increasing gross sown area.
Which is not the hindering factor involved in improving the crop intensity?
Infertile soil.
Deficiency in moisture, especially in rain fed region.
Insufficient usage of manures and fertilizers.
Large tracts of black soil.
Explanation:
In fact black soil is an added advantage in improving the crop intensity as it requires veryless irrigated or rainfall water as it has a very good capability to retain moisture.The usage of manures and fertilizers per hectare is quite low in India compared to othercountries like China, Japan etc.
3778.Consider the following statements:
1. The duration of the monsoon decreases from southern India to northern India.
2. The amount of annual rainfall in the northern plains of India decreases from east to west.
Which of the statements given above is/are correct?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
3779.Which of the statements are true regarding Equatorial climatic conditions?
1) It is known as latitudinal climate.
2) Low range of temperature is mainly due to the equatorial air mass.
3) There is no seasonality in this region or there are no distinguished seasons unlike other climatic regions.
Which among the following statement/s is/are true?
3 only.
2, 3 only.
1, 2 only.
All the above.
Explanation:
The climatic region is extensive from 10degree South to 10degree North. And this type ofclimatic condition is confined to only this latitudinal expanse. So it is also termed aslatitudinal climate. Equatorial air mass keeps the temperature moderate in the Equatorialregion.
3780.Consider the statements regarding the Mediterranean climate.
1) During summers this climatic region comes under the influence of On-shore Westerly wind.
2) During winters this climatic region comes under the influence of Off-shore Trade wind.
3) Atmospheric stability exists over the region during summers because of anti-cyclonic conditions.
Which of the statement/s is/are correct?
1, 2 only.
3 only.
All the above.
None of the above.
Explanation:
During summers this climatic region comes under the influence of Off-shore Trade winds.During winters this climatic region comes under the influence of On-shore Westerly wind.
3781.Desert is mainly located in the tropical West margins of the continents. What is/are the possible reason/s?
1) Existence of the perennial high pressure over this region.
2) Prevailing On-shore winds throughout the year.
3) Cold currents on the continental west margins add to the atmospheric stability of the region.
Choose the correct code from the following.
1 only.
1, 2 only.
1, 3 only.
2, 3 only.
Explanation:
Second statement: it is Off-shore winds and not On-shore winds the blows over this region.This winds carry no moisture thus causes no precipitation.Ex of cold currents: canaries current in the Atlantic East coast, West Australian current in theWest continental margins of Australia etc.
3782.In India, which type of forest among the following occupies the largest area?
Montane Wet Temperate Forest
Sub-tropical Dry Evergreen Forest
Tropical Moist Deciduous Forest
Tropical Wet Evergreen Forest
3783.What are the factors that have favoured the Wheat production in North West India?
1) Western disturbances.
2) Fertile alluvial soil brought down mainly by Indus and Ganga river system.
3) Semi arid region.
Choose the correct code from the following.
1, 2 only.
2, 3 only.
1, 3 only.
All the above.
Explanation:
North West India does have semi arid region but that itself is not a favourable characteristic,it’s the Western disturbance that favours Wheat production.
3784.Natural levees are depositional landforms on either side of the banks of a river. What are the disadvantages of natural levees.
1) Levees if breached can cause catastrophic floods.
2) Levee forming regions cannot be used for agricultural purposes.
3) Levee formation leads to sedimentation of river basins.
Choose the correct disadvantage/s from the following codes.
1, 2 only.
2, 3 only.
1, 3 only.
All the above.
Explanation:
Levee forming regions are good for agricultural purposes as its soil is renewed every yearthus imparting fertility.As the levee limits the flow of river water within its boundaries the river sheds its sedimentsonly in the river basin thus making river basins narrower and shallow thus increasing therisks of floods.
3785.Which of the following statements regarding laterate soils of India are correct?
1. They are generally red in colour.
2. They are rich in nitrogen and potash.
3. They are well-developed in Rajasthan and UP.
4. Tapioca and cashew nuts grow well on these soils.
Select the correct answer using the codes given below.
1, 2 and 3
2, 3 and 4
1 and 4
2 and 3 only
3786.The latitudes that pass through Sikkim also pass through:
Rajasthan
Punjab
Himachal Pradesh
Jammu & Kashmir
3787.Consider the statements regarding geysers which are special type of hot springs.
1) Hot water and vapour spouts from geyser tube intermittently.
2) It represents the minor form of broader processes of vulcanicity.
3) It is found only in tropical regions.
Choose the incorrect statement/s from the following code.
2, 3 only.
1, 2 only.
2 only.
3 only.
Explanation:
A geyser is a spring characterized by intermittent discharge of water ejected turbulently andaccompanied by steam.Over one thousand known geysers exist worldwide. At least 1,283 geysers have eruptedin Yellowstone National Park, Wyoming, United States, Valley of geysers, Russia etc. Thus itis found also in the temperate regions.
3788.Consider the statements regarding insolation which is nothing but the radiant energy received from the Sun in the form of heat and light.
1) Insolation received on the surface of the Earth decreases from Equator to the Poles.
2) During Summer Solstice, maximum insolation received at the ground surface is between the 30 to 40 degree South latitudes.
3) Insolation received is comparatively higher in the outer limit of the atmosphere that is on the surface of the Earth.
Choose the correct statement/s from the following codes.
1, 2 only.
2, 3 only.
1, 3 only.
All the above.
Explanation:
Solar rays will have to travel longer distance to reach the polar region than the Equatorialregions thus large amount of energy is lost due to scattering, diffraction, reflection etc. thushigher insolation is experienced in the equatorial region.Similarly the insolation is higher in the outer limits of the atmosphere.In the second statement, the latitudes should have been North rather than South.
3789.When you Travel in Himalayas, you will see the following:
1. Deep gorges
2. U-turn river courses
3. Parallel mountain ranges
4. Steep gradients causing land-sliding
Which of the above can be said to be the evidences for Himalayas being young fold Mountains?
1 and 2 only
1, 2 and 4 only
3 and 4 only
All of the above
3790.Weathering is the basic and first step in soil formation.
Consider the statements regarding weathering.
1) The rate of weathering increases with increasing steepness of the slope.
2) Mechanical weathering is higher in humid regions than in drier regions.
3) Chemical weathering is higher in drier regions than in humid regions.
Choose the correct statement/s from the codes below.
1 only.
2, 3 only.
1, 3 only.
All the above.
Explanation:
Steepness increases the weathering rate. The weathered rocks are easily removed bygravity, flowing water, moving wind etc if the steepness is higher thus exposing new rocksfor weathering thereby increasing its rate. Mechanical weathering is higher in drier regionsas there exists higher diurnal temperature. Few minerals are water soluble like calciumcarbonate etc thus humid region favours the chemical weathering. Moreover water is themain agent of chemical weathering in the rocks.
3791.Cherrapunji and Mawsynram records very high annual rainfall. This is because
they receive rainfall from both bay of bengal branch and arabian sea branch
the monsoon winds are trapped withing a funnel shaped valley in this region
they receive both cyclonic and monsoon rainfall
None of the above
Explanation:
the monsoon winds are trapped withing a funnel shaped valley in this region. Both these places are south of the Khasi hills where the monsoon winds gets trapped withing a funnel shaped valley giving copious rainfall
3792.When cold front passes over an area then
1. temperature decreases.
2. relative humidity increases.
3. sky becomes clear.
Select the correct answer using the codes given below.
1 only
1 and 2 only
1 and 3 only
1, 2 and 3
Explanation:
Relative humidity (RH) decreases when cold front passes over an area.Cold fronts are associated with clear sky and weather while warm fronts have clouds and rainfall.
3793.What are the causes of low pressure in the equatorial region?
1. high temperature
2. air convergence
3. high humidity
Select the correct answer using the codes given below.
1 only
1 and 2 only
1 and 3 only
1, 2 and 3 only
Explanation:
Due to high temperature, a low pressure belt is created in the equatorial region. This gives rise to air convergence in the area. So, air convergence is the effect of low pressure and not its cause. High humidity has no role to play in generation of low pressure areas.
3794.With reference to acidic lava ,consider the following statements :
1. they are viscous and flow slowly
2. they form a flattened lava dome
Which of the statements given above is/are correct ?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
Acidic lava are viscous and hence flow slowly. They even solidify before flowing for any significant distance. This results in formation of steep sided cone. Flattened lava dome are formed by basic lava which are very fluid and hence travel great distance before getting solidify.
3795.Ragi, a millet is currently encouraged to include in the diet to supplement nutrients to counter the malnutrition that is haunting the country.
Consider the following statements Ragi.
1) Ragi is rich in iron, calcium, roughphage and is mainly grown in dry regions.
2) Among minor producers Sikkim, Arunachal Pradesh, Uttarakhand are included.
3) It is grown as a major crop in Bengaluru-Mysuru table land from where the country’s majority of Ragi production comes from.
Choose the correct statements from the code below.
1, 2 only.
2, 3 only.
1, 3 only.
All the above.
Explanation:
Among minor producers even Jharkhand, Jammu Kashmir are also involved apart from thestates mentioned in the 2nd statement.Ragi production and consumption is highest in Bengaluru-Mysuru table region.
3796.Corals reefs are generally absent on the western coasts of continents. This is because
western coast of continents witnesses subsidence of air
western coast of continents have cold currents
western coast of continents have dry winds blowing over them
none of the above
Explanation:
western coast of continents have cold currents. Coral reefs do not flourish where there are cold currents because of the upwelling of the cold water from depths that cools the warm surface water.
3797.Which one of the following pairs is not correctly matched?
Dam/Lake River
Govind Sagar : Sutlej
Kolleru Lake : Krishna
Ukai Reservoir : Tapi
Wular Lake : Jhelum
3798.Black soils are known for its fertility with little or no evidence of exhaustion. This is because
1. Black soils with equal proportion of clay, gravel and coarse sand has high moisture retention capacity.
2. Cracks developed during dry season allow oxygenation of the soils.
3. Black soil has low level of kankar thus supports wide variety of crops.
Choose the incorrect reason from the codes below
2 Only.
2, 3 only.
1, 3 only.
All the above.
Explanation:
Black soil is mainly composed of clay, thus it has high moisture retention capacity. Black soilsare in fact rich in kankar nodules which add to the fertility of the soil.
3799.The major hot deserts of the world are located on the western coasts of continents between latitudes 15 and 30 degree North and South. Which among the following are examples of such deserts ?
1. Patagonian desert
2. Gobi desert
3. Atacama desert
4. Great Australian desert
Select the correct answer using the codes given below.
1 and 2 only
1 and 3 only
3 and 4 only
1,3 and 4 only
Explanation:
Gobi desert is a continental desert which must be known to you. Patagonian desert is on eastern part of South America. Rest two – Atacama desert and Great Australian desert are the typical example of west coast desert between latitudes 15 and 30 degree North and South.Other examples are Sahara, Namib, Kalahari, Sonoran, Thar etc.
3800.A state in India has the following characteristics?
1. Its northern part is arid and semi-arid.
2. Its central part produces cotton.
3. Cultivation of cash crops is predominant over food crops.
Which of the following states has all of the above characteristics?
Andhra Pradesh
Gujarat
Karnataka
Tamil Nadu
3801.The peninsular plateau is a major physiographic division of India. Which of the following is/are a part of the peninsular plateau ?
1. Kutch peninsula
2. Aravali range
3. Meghalaya plateau
Select the correct answer using the codes given below.
1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3
Explanation:
Please revise the physiographic divisions of India from NCERT or Khullar along with a map. Kutch peninsula is a part of the coastal plains. Aravali hills and Meghalaya plateau ( eastward extension of the chotanagpur plateau ) are part of the peninsular plateau.
3803.Suppose 100 units of radiation is coming from the sun. 35 units gets reflected back to space. 14 units is absorbed by atmosphere. 51 units reaches the earth’s surface. What is the amount of insolation in the above scenario ?
49 units
51 units
65 units
86 units
Explanation:
The purpose of this question was to make you relearn that – only that part of the sun’s radiation which reaches the earth’s surfaceis called insolation. While it may look easy to remember it now, students often gets confused in these basic concepts when they read more advanced things.
3804.Many areas in Rajasthan and adjoining states have arid and desert soils. Which of the following are correct about such soils ?
1. they have high phosphate content
2. they have high nitrogen content
3. they are poor in organic matter
Select the correct answer using the codes given below.
1 and 2 only
1 and 3 only
3 only
2 and 3 only
Explanation:
Yes desert soils have high phosphate content. They have phosphate content as high as in alluvial soils. Nitrogen and organic matter, as expected are low.
3805.The productivity in the Indian agriculture has stagnated since 1990’s although the usage of fertilizers has considerably increased since then.
What is/are the possible reason/s increase in the productivity cannot come through increase in the usage of fertilizers.
Unscientific usage of fertilizers.
Agriculture productivity in India has reached a zenith position and any further
Increasing monsoon vagaries because of Climate Change.
Both 1 and 3.
Explanation:
Unscientific usage is the main reason ie unbalanced dosage of nitrogen, phosphorous,potassium. In the ideal condition it should be 4:2:1. But in India it is completely unbalanced .Based on region the ratio of N:P:K varies in a big way eg: all India it is 8.2:3.2:1, for Punjab itis 61.9:19.3:1, for Haryana it is 61.4:18.7:1. This can have negative impact like decreasingthe soil fertility and thus reducing the yield. Monsoon vagaries definitely has increased withtime.
3806.Consider the following statements about doldrums :
1. they are a high pressure region
2. they are a zone of wind divergence
Which of the statements given above is/are correct ?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
Doldrums are the region between 5 degree north and south of the equator. They are low pressure zones because of heating and trade winds from both hemisphere converges here. Doldrums, also called equatorial calms, equatorial regions of light ocean currents and winds within the intertropical convergence zone (ITCZ), a belt of converging winds and rising air encircling Earth near the Equator.The northeast and southeast trade winds meet there; this meeting causes air uplift and often produces clusters of convective thunderstorms.
3807.Which of the following conditions is/are conducive for the formation of tropical cyclones?
1. large and continuous supply of warm and moist air.
2. large value of coriolis force.
3. inflow of air at upper level of atmosphere.
Select the correct answer using the codes given below.
1 and 2 only
1 only
1 and 3 only
1, 2 and 3
Explanation:
Large and continuous supply of warm and moist air is the most important condition for formation of tropical cyclone.Where coriolis force is zero (like equator), tropical cyclones do not develop. An upper level outflow of air (and not inflow) helps in formation of tropical cyclone.
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