Kerala Plus One Geography Question Paper March 2020 with Answers

Teachers recommend solving Kerala Syllabus Plus One Geography Previous Year Question Papers and Answers Pdf March 2020 to improve time management during exams.

Kerala Plus One September Previous Year Question Paper March 2020

Time : 2 Hours
Total Scores : 60

Section – A

Answer any 5 questions from 1 to 6. Each carries 1 score. (5 × 1 = 5)

Question 1.
The locations where the tectonic plates move away from each other.
a) Spreading sites
b) Subduction zones
c) Mid oceanic ridges
d) Ocean deeps
Answer:
a) Spreading sites

Question 2.
The tendency of a mineral to allow light to pass through it.
a) Powder
b) Hardness
c) Transparency
D) Details
Answer:
c) Transparency

Question 3.
The temperature at which water starts evaporating
a) Latent heat of condensation
b) Latent heat of vapourisation
c) Absolute humidity
d) Relative humidity
Answer:
a) Latent heat of condensation

Question 4.
The strait that separates India from Sri Lanka,
a) Malacca Strait
b) Sunda Strait
c) Gibraltar Strait
d) Palk Strait a
Answer:
d) Palk Strait

Question 5.
The most common type of earthquakes.
a) Volcanic earthquakes
b) Tectonic earthquakes
c) Collapse earthquakes
d) Explosion earthquakes
Answer:
b) Tectonic earthquakes

Question 6.
The tides formed when the sun, the moon and the earth comes in straght line.
a) Springtide
b) Neap tide
c) Surge
d) Diurnal tide
Answer:
a) Springtide

Section – B

Answer any 6 questions from 7 to 14. Each carries 2 scores. (6 × 2 = 12)

Question 7.
Distinguish between focus and epicentre.
Answer:
Focus: Actual point of origin of the eqrthquake

Epicentre : The Point on the surface of the earth closest to the focus of the earthquake

Question 8.
What is normal lapse rate b In which atmospheric layer does it exist?
Answer:
Temperature decreases with height -1 degree/165m.
Troposphere/First layer/lower most layer (Any 2)

Question 9.
Identify the type of rainfall depicted in the following diagram and write about its formation.

Answer:

1. Moister laden winds rises along the slopes of mountains.
2. It condenses on ascent, cloud formation occurs
3. Eg: Monsoon rainfall

Question 10.
Prepare a note on lithification.
Answer:

1. The sediments transported by exogenic agencies (wind, sea wave, water, glacier etc) get deposited in due course
2. These deposits turn into rock through comaction.’
3. These process is termed as lithification.

Question 11.
Give a brief account of the atmospheric layer just above the stratosphere.
Answer:

1. Mesophere – It extends up to a height of 80km.
2. Temperature again starts decreasing with increasing height.
3. Temperature reaches minus 100 degree Celsius at the height of 80 km.
4. Upper limit of Mesosphere is known as Mesopause (Any 2 points)

Question 12.
The approach in Geography in which the phenomena of a region are studied in a holistic manner. Mention any two branches of Geography as per this approach.
Answer:
Systematic Geography

1. Branches: physical Geography
2. Human Geography
3.  Bio Geography (Any Two)

Question 13.
Suggest measures for the mitigation of landslides in Kerala.
Answer:

1. Terrace farming
2. Construction of bunds
3. Afforestation

Question 14.
Mention the concept of ‘food chain’
Answer:
Food Chain : The sequence of eating and being eaten and the resultant transfer of energy from one level to another level is known as the food chain.

Section – C

Question 15.
Identify the most widespread natural vegetation type in India and explain its characteristics.
Answer:

1. Tropical Deciduous Forest
2. Also known as Monsoon Forest
3. Spread over regions with annual rainfall 70-200cm.
4. Further divided into Moist Deciduous and Dry Deciduous.

Question 16.
Prepare a brief note on any two factors controlling soil formation.
Answer:
To identify any of the two factors

1. Parent material
2. Topography
3. Climate
4. Biological Activity
5. Time
6. To prepare notes dn each

Question 17.
Point out the portions below the earth’s crust and list any two of their characteristics.
Answer:

1. To identify the layers as Mantle and Core
2. To list the characteristic of each (Two Points)

Question 18.
Identify and prepare an explanatory note on any two supporting evidences of the Continental drift hypothesis.
Answer:
To list any of the supporting evidences of

1. Matching of continents.
2. Rocks of same age across the oceans.
3. Tillite
4. Placer deposits
5. Distribution of fossils identify (any 2 points)

Question 19.
What are Sun-Spots b How does it influence the weather over the earth?
Answer:

1. Sun spots are dark and cooler patches of the sun .which increases and decreases in a cyclic manner.
2. To explain the influence of sunspots on the weather over the earth…
3. When the number of sun spots increase cooler and wetter weather and greater storminess occur.
4. Decrease in sunspot number is associated warm and drier condition.

Question 20.
List the three stages in the evolution of earth’s atmosphere.
Answer:
Loss of primordial atmosphere (due to solar flares).

1. Degassig – water vapour, Nitrogen, carbon dioxide, methane etc.
2. Photosynthesis found cut in hard rocks)

Question 21.
‘Black soil is unique in many respects’ – Justify. (Hints: thickness, characteristics)
Answer:

1. Very deep (thin soil layer).
2. Generally clayey and impermeable
3. Can retain moisture for long
4. Self ploughing effect exists etc. (Any 3)

Section – D

Answer any 4 questions from 22 to 27. Each carries 4 scores. (4 × 4 = 16)

Question 22.
Write short notes on :
a) incised meander
b) alluvianfan
Answer:

1. Incised meanders: Erosional landforms
2. Formed in the upper coure where there isactive upliftment.
3. (incised or entrenched meanders are those which are very deep and wide meanders can also be found cut in hard rocks)
4. Alluvial fan: Depositional landform in the form of a fan.
5. Forn when streams flowing from higher levels break into foot stopes with low gradient.
6. Formed on the foot hill of mountains.

Question 23.
List the various factors affecting ocean salinity.
Answer:

1. Evaporaton
2. Precipitation
3. Freshwater:
4. Inflowfrom River
5. Freezing&thawingofice
6. Wind
7. Ocean currents etc

Question 24.
Classify ocean currents based on temperature and explain each.
Answer:
Ocean currents can also be classified based on temperature: as cold current and warm currents:

1. cold currents bring cold water in to warm water areas. These currents are usually found on the west coast of the continents in the low and middle latitudes and on the eash coast in the higher latitudes in the Northern Hemisphere;
2. warm currents bring warm water to cold water areas and are usually observed in the east coast of continents in the low and middle latitudes. In the northern hemisphere they are found on the west coasts of continents in high latitudes.

Question 25.
Mention terrestrial radiation. Discuss any two processes of heat transfer in the atmosphere
Answer:
1. Conduction:
The earth after being heated by insolation transmits the heat to the almospheric layers near to the earth in long wave form. The air in contact with the land gets heated slowly and the upper layers in contact with the lower layers also get heated. This process is called conduction. Condction takes place when two bodies of unequal temperature are in contact with one another, there is a flow of energy from the warmer to cooler body.

2. Convection
The air in contact with theearth rises vertically on heating in the form of currents and further transmits the heat of the atm osphere. This process of vertical heating of the atmosphere is known as convection.

3. Terrestrial Radiation
The insolation received by the earth is in short waves forms and heats up its surface. The earth after being heated itself becomes a radiating body and it radiates energy to teatmosphere in long wave form. This energy heats up the atmosphere from below. This process is known as terrestrial radiation.

Question 26.
Prepare a note on the Indus drainage system
Hints:
• Origin
• Length
• Tributaries
Answer:
It is one of the largest liver basins of the world, covering an area of 1165,000sq.k (in India, it is 32,289km and total length of 2880km (In India, 1,114km. the Indus also known as Sindhu. It originate, from a glacier near Bokhiarchu in the Tibetan region at an altitude of 4,164m in the Kailash mountain range. The main tributaries of Sindhu river are Satlaji the Beas, the Ravi, the Chinab and the Ihelun.

Question 27.
Identify the physiographic diviion sandwhiched between the northern mountains and the penisular plateau. Explan its salient features.
Answer:
TheNortern Plains The northern plainsare formed by the alluvial deposits broutht by the rivers – the Indus, the Ganga and the Brahmaputra. These plains extend approximately 3,200km from the east to the west. The average width of these plains varies between 150-300km. From the north to the south, these pan be further divided into the Khadarand the Bhangar.

Section – E

Answer any 1 question from 28 and 29. carries 6 score. Answer any six. (1 × 6 = 6)

Question 28.
Describe the general circulation of the atmosphere with the help of a diagram. Hints: Pressure belts Planetary winds
Answer:
General circulation of the atmosphere
The pattern of planetary winds largely depends on:

1. Latitudinal variation of atmospheric heating;
2. emergence of pressure belts;
3. the migration of belts following apparent path of the sun;
4. the distribution of continents and oceans;
5. the rotation of earth.

The pattern of the movement of he planetary winds is called the general circulation of the atmosphere. The general circulation of the atmosphere also sets in motion the ocean water circulation which influences the earth’s climate. A schematic description of the general circulation.

The air at the Inter Tropical Convergence Zone (ITCZ) rises because of convection caused by high insolation and a low pressure is created. The winds from the tropics converge at this low pressure zone.

Local Winds
Differences in the heating and cooling of earth surfaces and the cycles those develop daily or annually can create several common, local or regional winds.

Land and Sea Breezes
The Land and sea absorb and transfer heat differently. During the say the land heats up faster and becomes warmer than the sea. Therefore, over the land the air rises giving risetoa low pressure area, whereas the sea ¡s relatively cool and the pressure over sea is relatively high. Thus, pressure gradient form sea to land is created and the wind blows from the sea to the land as the sea breeze. In the right the reversal of condition takes palce. The land loses heat faster and is cooler than the sea. The pressure gradient is from the land to the sea and hence land breeze results.

In mountainous regions, during the day the slopes get heated up and ¡r moves upslope and to fill the resulting gap the air from the valley blows up the valley. This wind is known as the valley breeze. During the night the sipes get cooled and the dense air descends into the valley as the mountain wind.

Fronts
When two different air masses meet, the boundary zone between them is called a front. The process of formation of the fronts is known as frontogenesis.

Question 29.
Explain the various factors related to location and relief that determine the climate of India.
Answer:
The factors related to location and relief are:

1. The Latitude
2. The Himalayan mountains
3. Distribution of land and water
4. Altitude
5. Relief