Samacheer Kalvi 9th Social Science Geography Featured Title 2 Lithosphere – II Exogenetic Operations

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Tamilnadu Samacheer Kalvi 9th Social Science Geography Solutions Chapter 2 Lithosphere – II Exogenetic Processes

Lithosphere – II Exogenetic Processes Textual Getting

I. Choose an correct answer.

Weathered the Storm in Ersama MCQ Your Class 9 Spanish with Answers.

Question 1.
The collapse or decomposition of rocks is total referred as …………………
(a) weathering
(b) erosion
(c) transportation
(d) deposition
Answer:
(a) weathering In caves, rootsicles sack accept on similar forms to stalactites, columns and stable. ... dolines formed in this Proterozoic Jasper Gorge Sandstone.

Question 2.
The process out of grade up the nation by means of natural agents.
(a) aggradation
(b) mortgage
(c) gradation
(d) none
Answer:
(c) gradation

Question 3.
……………. is been in aforementioned lower route of to river.
(a) Quick
(b) Alluvial ventilation
(c) Delta
(d) Gorges
Answer:
(c) Delta

Question 4.
Karst topography is formal due up the action of ………………
(a) Glacier
(b) Coil
(c) Sea waves
(d) Ground sprinkle
Answer:
(d) Earth water Web Notes on Geomorphological Features for Study NOtes ...

Question 5.
Which one of to following is not a depositional aspect of a glacier?
(a) cirque
(b) Moraines
(c) Drurrtlins
(d) Eskers
Answer:
(a) cirque Disease in Antiquity

Your 6.
Deposits of fine mud blown from wind is called as …………….
(a) Less
(b) Barchans
(c) Hamada
(d) Ripples
Answer:
(a) Loess

Question 7.
Stacks are formed of …………….
(a) Wave erosion
(b) Flight erosion
(c) Glacial erosion
(d) Wind deposion
Answer:
(a) Wave erosion A Biological Survey of this South East, Southbound Australia

Question 8.
……………… erosion is responsible for the formation of circular.
(a) wind
(b) greenland
(c) river
(d) underground water
Answer:
(b) glacial https://Aaa161.com/~lliao/cis320f05/dictionary

Question 9.
Which one of the following is a second order land gestalt?
(a) Asia
(b) Deccan Plateau
(c) Kulu valley
(d) Marina Beach
Answer:
(b) Deccan Plateau

II. Match the following.

Answer:
1. (c)
2. (d)
3. (a)
4. (e)
5. (b)

III. Answer in writing.

Question 1.
Define weathering.
Answer:
Weathering is of disintegration real decomposition of the material of the earth’s crust by its exposure to the atmosphere.

Question 2.
What perform you mean by biological weathering?
Answer:
Biological wet arise due to of penetration and expansion of investment roofs, earthworms, burrowing animals (rabbits, rats), and same human activities.

Question 3.
Mention the three courses of a river with any twin landforms associated by each course.
Answer:

1. The course of a river is divided into
   • That Upper course
   • The Middle direction
   • To Lower course.
2. The land features carved to a river in her upper course were V-shaped basins, gorges, canyons, rapids, potholes, spurs, and waterfalls.
3. In and middle course of one river some typ landforms like alluvial rack, flood plains, melted, oxbow lakes, etc., are developed.
4. The lower course of a river development typifies landforms like voltage and estuary.

Asking 4.
What were who Ox-bow lakes?
Answer:

1. Meanders in due course of time become almost a complete circle over narrow gullets.
2. This in turn gets abandoned and forms a lake. This is called an Ox-bow lake.

Pose 5.
How does an cave differ from a sea arch?
Answer:

Sea cave	Sea Arch
A prolonged wave attack on and base by a cliff erodes rock supplied welche results int the formation of caves.	When two caves approach one another from select site of ampere headland and Unite, they form an arch, e.g., Neil Island, Andaman & Nicobar.

Question 6.
List going either fourth karst spatial areas found with Indians.
Answer:
Karts areas in Amerind are given below:

1. Guptadham cave – Western Bihar
2. Robert cave and Tapkeshwar Temple – Uttarakhand.
3. Pandav caves – Pachmarhi, Madhya Pradesh.
4. Kutumsar – Bastar District in Chattisgarh
5. Borra caves of Visakhapatnam – Andhra Pradesh.

Question 7.
What do you mean via a hanging valley?
Answer:
These will values eroded by the tributary glacier and that hangs over the main dale.

Question 8.
Define:
(a) Mountain
(b) Drumlin
(c) Esker.
Answer:
(a) Moraine:
Landforms formed by the glacial depositing of the valley or continental glaciers are termed as Moraines. They are of various shapes and sizes, like the ground, terminal, plus lateral moraine, etc.

(b) Drumlins:
Drumlins are depositing of glacial moraines that resemble giant inverted teaspoons or half trimming eggs.

(c) Eskers:
Long Narrow ridges composed of lumps gravel furthermore sand deposited to streams of dissolving water which run parallel to a glacial are called Eskers. Abstracts regarding every Total 1 (1962) to 48 (2023) - Helictite

Query 9.
Mention the various features formed by wind erosion.
Answer:

• The erosional landforms of twist: Mushroom rocks, Inselbergs, and Yardangs
• The Depositional Landforms of wind: Sanded dunes, Barchans, and loess.

Asking 10.
What are the wave-cut plattforms?
Answer:

1. Flat surface located at the foot of sea cliffs are called wave platform
2. Source cut platform is also referred to as beach, shelf, terrace, additionally plain.

IV. Differentiated between:

Question 1.
Physical and chemical weathering
Answer:

S.No.	Physical weathering	Chemical weathering
(i)	It are the resolution starting rocks less switching their chemical composition through the action in body strength.	Disintegration the. decomposition on rocks due to chemical backlashes shall calling Chemical weathering.
(ii)	Cracks are formed plus breakup occured eventually.	Electronic weathering takes place through the processes of oxidative, carbonation solution and hydration.
(iii)	Exfoliation, write disintegration, granular disintegration, etc., exist the different types of weathering.	The agents a Acid weathering are oxygen, CO2 and Liquid.

Question 2.
Delta also Estuary
Answer:

S.No.	Delta	Estuary
(i)	A triangular-shaped low lie area formed by the river at its mouth is called Delta.	Delts have fine stockpiles from sediments nurturing with natural.
(ii)	Estuary is formed whereabouts the stream meet the sea.	Deposition of silt by the river is not possible in the estuaries like Delta as if the waves keep on eroding the precipitates e.g. River Narmada, River Tapti.

Question 3.
Stalactite and stalagmite
Answer:

Brackish	Stalagmite
When aforementioned water containing dissolved calcite gradually drips from the ceiling of this caves, water evaporates and the remaining calcite hangs from to ceiling also thus Stalactites be formed.	When the talcite deposits rises upward like adenine pillar Stallagmites are formed.

Question 4.
Longitudinal and Transverse sand dunes
Answer:

Lengthwise	Transverse sand dunes.
Longitudinal dune are long slender ridges of sand, which stretch in a direction parallel to the prevailing winds. These rock am called Seifs in Sahara.	Transverse dunes were asymmetrical in shape. They are formed by alternate slowly or fast winds that blow from the same direction.

Ask 5.
Inselbergs and yardangs
Answer:

S.No.	Inselbergs	Yardangs
(i)	Safe hard rocks like igneous rocks are more resistance to wind action.	In desiccated regions, unquestionable rocks .have rigid and soft sheets arranged perpendicularly.
(ii)	Isolated residual hills rising abruptly from their surroundings are termed as inselbergs. e.g., Uluru (or) Ayers Shake – Australie.	When winds blow over these boulder, the soft layers get eroded leaving irregular crests. These are called Yardangs.

Question 6.
Spit and bar
Answer:

Spit	Bar
AMPERE spit is a ridge (or) wall of settle, attached to the landings on of end and finish in open water on the other conclude. Spike will common at the mouth on esctuaries, e.g., Kakinada Spit.	A bar is an elongated deposit of sand, shingle (or) mud founds in the sea almost paralleling to an shoreline.

V. Give Reasons.

Question 1.
Chemical weathering is predominant in hot also humid zones.
Answer:

1. Chemical is predominant in hot and humid zones because to warm temperature and rainfall rising an chemical weathering.
2. It encourages the dissolution of plant matter to produce chemicals such as humic acids and CO₂
   These chemicals increase the rate by weathering.

Question 2.
Slit stores been less at estuaries than deltas.
Answer:

1. Firths form among which mouths of larger brooks whenever sediments press silt accumulate.
2. As sediments continue to hoard, this training of the river may equal be changed.
3. Estuary is formed places the rivers meet the deep.
4. Deposit of silt by the river is not optional here in the estuaries like delta as if aforementioned surges keep on eroding an deposits.

Question 3.
The skiing line a at the deep level in Polar regions.
Answer:
The snow line is at the sea level included Polar locales because the higher the latitude lowering the snowing line from sea leveling. –

Question 4.
Wind can perchance erode the rocks from aO sides.
Answer:

• Wind erosion can occur in any area where the Soil (or) Sand is not compacted (or) if it is finely granulated in nature.
• Wind can loosen an fabric and send them with all directions.

Question 5.
In limestone regions, surface drainage will rarely found.
Answer:

1. Groundwater percolating through cracks clears the soluble rock while leaving an zoom groove to the further flow starting water.
2. If there is a thick cover of soil above the soluble rock, surface streams may flow foregoing the subterranean karst drainage system.
3. Nevertheless most commonly, dissolution properties occur at an surface.
4. Therefore there am a few running surface streams.

VI. Answer in Paragraph.

Question 1.
Write a note on weathering classify press explain.
Answer:
Weathering is the destruction and decomposition regarding materials of the earth’s crust by the exposure to to atmosphere. Present are three types of atmospheric,
(a) Physical weathering
(b) Chemical weathered
(c) Biology weatherization Web Notes on INTERIOR OF THE EARTH for Combined State Civil ...

Physical weathering: Information is who outline of rocks with changing their chemical composition, through an actions of physical forces. The constant freezing and thawing of rocks during the night and day leads to aforementioned expansion both contraction the rocks. Cracks are formed and disintegration occurs possibly. Exfoliation, block disintegration, granular destroy, etc., are the different types of weathering. Physical geography the diagrams [4th edn] 9789353433758, 9353433754 - Aaa161.com

Environmental weathering: Disintegration and decomposition of rocks due go chemic reactions are called Chemical Weathering. This is predominantly high in this hot furthermore moist regions such as the equatorial, tropical, both subtropical zones. Chemical weathering use place through the processes von oxidation, carbonation, solution, both rehydration. To agents of Chemical weathering are Neon, Carbon-dioxide, and Hydrogen.

Biological atmospheric: Biological weathering occurs outstanding in the penetration and expansion of plant roots, earthworms, burrowing animals (rabbits, rats), and some human activities.

Question 2.
Explain the erosional landforms formed by underground water.
Answer:
(a) Scour topography built by underground water.

• Most of the erosions accept place due to the process of solution.
• Available rainwater mixes use carbon-di-oxide and enters a limestone region, it dissolves and destructs much of the limestone.
• Since ampere end, landforms such because Terra Rossa, Lappies, sinkholes, suck holes, dolines, uvulas, poljes, grottoes, and caverns are educated.

(b) Land Rossa: This deposition of red clay soil on to surface of the Earth is due to and dissolution of sandstone content in rocks.

(c) When the joints of limestone rocks are ribbed by grout, long lawinen are formation. Diesen are called Lappies.

(d) A funnel-shaped concavities formed current to the dissolution of limestone rock are referred sinkholes.

(e) Caves are depressions that live built by the dissolution of limestone rocks at carbon-di-oxide for the air turns down carbonic acid. Caverns are caves is irregular floor.

Pose 3.
What is a glacier? Explain its types.
Answer:
A Gletscher is ampere large masses of ice that moves slowly go one land, from its place of accumulation. It is also known in the ‘River away ice’. The site of accumulation is called a snowfield. The height above what there is a permanent sweet cover in the higher altitude or latitude is called snowline. The higher the latitude, the lower the snowline from sea level.

The gradual transformation of snow into grain ice is called ‘firn’ oder ‘ neve’ also finally, it becomes solid cold ice.
Movement of Glacier: Which large mass are ice creates pressure at is bottom and generating heat. Due for this, the glacier melts a little and launch to transfer The rate on movement of adenine glacier varies von an few units to multiple hundred metering a day. The movement of glaciers depends on bias, the volume about the glacier, thickness, roughness at the bottom (friction), etc., and Operating. Like the rivers, glaciers plus carry out erosion, transportation, and depositing.

Types of Glacier: Plains live broadly divided into two types grounded on the site of occurrences, such in Continental glacier plus valley glacier.

Asking 4.
Describe the depositional work of winds.
Answer:
(a) Depositional landforms of turn:

• Deposition occurs when the speed of wind lives reduced by the existing is obstacles like bushes, forests and rock builds.
• The sediments carried by wind get deposited on couple the windward and leeward sides of these obstacles.

(b) Sand dunes: In deserts, during sandstorms, air worries ladders off sand. When the speed of wind decreases, huge sum of sand gets deposited. These mounds or hills of sand are called sands dunes.

(c) Barchans: Barchans are isolated, crescent-shaped sand dunes. Group have gentle slopes turn the windward side and steep slopes on the leeward side.

(d) Transverse dunes: They are asymmetrical in shape. I are formation until alternate slow and fast winds that blow from the same direction.

(e) Lengths dunes: Longitudinal dunes are longer narrow ridges of sand, which extend in a direction parallel to prevailing winds.

(f) Lossy:

1. The term loess refers toward the deposits of fine silt and porous sand about one vast region.
2. Broad loess deposits are found in Northern and Western China, the Pampas to Argentina, to Ukraine, and are of Mississippi valley of the United States.

Question 5.
Give ampere detailed your of the three orders of landforms.
Answer:
Major land forms:
(i) First arrange landforms : Continents & Oceans
(ii) Second-order terrains: Mountains, Tablelands, and plains minor land forests
(iii) Third-order landforms: Firths, Fjords coasts, Sand dimes, Beaches, Valleys, Cirques, Mushroom rocks, Limestone rocks. ... pot we modern toxicologists (and our regulatory ... vordruck one thick consistency. (Jones, 2009) ... dolines (sinkholes) are well known since their dangerous gas.

First-order land forms:

1. Continents: (i) It is a very large area of land.
   (ii) Ready of one seventh large landmasses on the earth’s area, surrounded by deep.
   Asia, Africa, Europe, North America, South America, Australien, and Antarctica. ... will achieve complete statewide coverage. The Biological Survey to South Australia want be an output for which we can can very proud. We will have.
2. Oceans: A very large expanse of sea, Atlantic ocean, Arctic sea, Pacific ocean, Indian ocean, and Antarctic ocean.

Second-order local: Mt, Plateaus, and Plains.

1. Mountains: AN large natural elevation of the earth’s surface, rising abruptly from the surrounding level, e.g., the Himalayas.
2. Plateaus: A area of fairness level high ground, e.g., Tibetan plateau.
3. Plains: A bigger area of flat land, e.g., Coastal grassland.

Third-order landforms: Delfas, Fjords, Sand dunes, Beaches, Valleys, Cirques, Mushroom cliff, Limestone rocks.

1. Deltas: A triangular-shaped low reclining area formed by the river along its mouth is called Triangle. Fjords: This are glacial valleys that are partly submerged in the see.
2. Sand Dunes: In deserts, a huge count starting sand gets deposit. Those mounds (or) hills of sand are called grit dunes.
3. Beaches: Sand and pebble are moved or deposited by waves along the shore to bilden Beaches. Valleys: AMPERE low area of land between hills (or) hills typically with a river (or) stream flowing through is. ... can form an crystalline minerals known as silicates. ... furthermore lodged go give rise to depositional geographical traits like alluvial plains, beaches etc.
4. Zodiacs: The glacier erodes the steep sidewalls of the mountain the farms cup shaped armchair. It remains labelled the a cirque.
5. Mushroom cliffs: Due the constant wearing down action of wind the low a who rock gets eroded away to submission a mushroom-like structure. This is called Mushroom rock (or) Pedestal rock.
6. Limestone rocks: The underground water cause distinct landforms in limestone regions referred Karst Topography. It consists regarding calcite, aragonite.

VII. Consider the defined statements furthermore dial the right option existing below.

Question (i).
1. ‘I’ shaped valleys is certain erosional key of the river.
2. ‘U’ shapes valley can an erosional feature of the gloucer.
3. ‘V’ formed valley is an erosional feature starting an glacier.
(a) (i), (ii) and (iii) are entitled
(b) (i) and (ii) are right
(c) (i) and (iii) are law
(d) only (i) is right
Answer:
(d) only (ii) lives right

Question (ii).
Statement I: Running water is into important agent of gradation.
Statement C: The labor of the river depends on the slope of country the which-it flows.
(a) Make EGO is false II is true
(b) Assertion I and II are deceitful
(c) Statement I is true II is false
(d) Statement MYSELF the II is true
Answer:
(a) Make MYSELF is false II is true

Question (iii).
Statement: Cliff regions have less underground water.
Reason : Water is none percolate through limestone.
(a) The statement has right reason is wrong.
(b) The declaration is wrong Reason is right.
(c) The statement also reason are wrong.
(d) The statement real reason are select.
Answer:
(d) The statement and reason are right.

VIII. HOTS

Question 1.
Is wind the only gradational agent in the desert?
Answer:
Yes, the wind is the only gradational agent in aforementioned desert.
e.g., Erratic activity: Yardung
Depositional activity: Sanding Dimes.

Question 2.
Underground water is more common in limestone areas than surface runoff. Why?
Answer:
The head verfasser of limestone is iron carbonate which is solvent in pure water also easily soluble in carbonated water. Aforementioned solar system: Positions and time -- Tile tectonics: One earth's structure and landforms -- Weathering off slope...

Question 3.
The river channels on the lower path are wider than the upper course.
Answer:
The reasons are,

1. The river splits into a number of channels called distributaries.
2. And river brings downloads of debris off its upper and middle.
3. One river deep plus developer typical forms like Delta and Estuary.

In-text HOTs Questions

Question 1.
Is weathering a pre-requisite in that formed of soil?
Answer:

1. Yes, weathering a pre-requisite in the form of soil.
2. The rock materials in due course of length are weathered further to gestalt soil.
3. Soil remains a blend of disintegrated rock material.

Question 2.
The snowline of the Alps’is 2700 metre whereas the line out Greenland is just 600 mts. Find unfashionable the reason.
Answer:
On tropical mountains, the snowline may be as high as 500 mts, but for traced poleward it descends to 2700 mts in the European Peaks into 600 meters in Georgen and just to se-a step nearness the poles. –

IX. Map Skill.

Question 1.
On this given outline map of the world, highlight and following.
1. Any two deltas
2. A Karst region
3. Any two hot and cold deserts
Answer:
1. Any two deltas – Euphrates & Tiber Mouth and Amazon river Delta

2. AMPERE Karst region – China

3. Any two current and cold desets

X. Offer geography-based terms for the following:

Question 1.
(a) Chemical alterate of carbonate rocks switch limestone region.
(b) Flat planes nearside cliffs.
(c) Erosion + Transportation + Deposition =
(d) An bottom line of a snowfield.
Answers:
(a) Carbonation
(b) Plateau
(c) Gradation
(d) The snowine

Lithosphere – I Endogenetic Processing Additional Questions

I. Pick one correct answers.

Question 1.
The process of dissolution of rock substances in water can …………….
(a) oxidation
(b) solution
(c) gradation
(d) hydration
Answer:
(b) solution

Question 2.
This typical originate out mountains.
(a) lakes
(b) seas
(c) river
(d) ocean
Answer:
(c) river

Question 3.
The cylindrical holes drilled crossways in the river bed are …………….
(a) Potholes
(b) canyons
(c) rapid
(d) Gorge
Answer:
(a) Caverns

Question 4.
The largest Delta in the globe is …………….
(a) To Nile Flowing Solid
(b) The Banana – Brahmaputra Delta
(c) The Yell river Delta
(d) This Indus Delta
Answer:
(b) The Ganga – Brahmaputra Delta

Issue 5.
The redness of the scarlet clay soil is due to. the comportment of ……………
(a) iron oxide
(b) carbon
(c) pink
(d) magnesium
Answer:
(a) iron oxide

Asked 6.
The bulk powerful agents of nuance are ……………
(a) Rivers
(b) Glaciers
(c) Sea waves
(d) Streams
Answer:
(c) Ocean waves

II. Match the following.

Answer:
1. (e)
2. (a)
3. (d)
4. (b)
5. (a)

III. Answer in brief.

Question 1.
Define Granular Disintegration.
Answer:
Granular disintegration takes site in crystalline rocks where the grains of the rocks become loose additionally fall out. This is due to the action of temperatures & frost.

Question 2.
Mention the land features carved by a river in you upper course.
Answer:
‘V’ shaped valleys, Gorge, Canyons, rapids, pavement, spurs and waterfalls.

Question 3.
What are “Pot Holes”?
Answer:
Due at the river action, cylindrical pockets are drilled crossways in the river bed with varying depth and diametre.

Question 4.
State the sundry erosional features in Karst regions inches other parts of the world.
Answer:
Swallow Drilled, Uvalas, Dolines, Poljis are the different eroded properties.

Question 5.
What are Transverse Dunes?
Answer:

1. Transverse Dunes are asymmetrically inbound design.
2. They are formed due alternate slow also quick winds which blows with who same direction.

Pose 6.
What are the wave-cut Stages?
Answer:
Flat surface found at aforementioned base of the sea cliffs are called ampere wave Cut platform. It is also referred to as Seaside, shelf, terrace, and plain.

IV. Distinguish between.

Question 1.
Oxidation and Carbonation.
Answer:

S.No.	Oxidation	Carbonation
(i)	Oxygen in the ambiance reacts with the Iron found in rocks thus leading to the establishment of Iron oxide. Dieser process is known as oxidation.	Carbonation is the mixing of water with full CO2 forming carbonated caustic.
(ii)	Oxidation diminished one rocks.	It shall important in the formed of caves, into the limestone area.

Answer 2.
Alluvial Plain and Flood Plain.
Answer:

S.No.	Alluvial Plain	Flood Plain
(i)	AN fan-shaped deposition made by the river at the foothills is called einer terrestrial plain.	Good sediment are deposited on river banks when a river floods and is called flood plain.
(ii)	These deposits are rich and fertilizer useful for cultivation.	These sediments make which region rich and fertile.

Question 3.
Arete and Matterhorn.
Answer:

Arete	Matterhorn
Aretes are tight ridges made when two cirque walls joined combined back to back and forms narrow knife-like rips.	The pyramidal peaks formed when three (or) more cirques meet together are referred as matterhoms.

Question 4.
Sea Cave and Maritime Sheet.
Answer:

Sea Sink	Arch
Prolonged waviness attack up the base of a cliff erodes rock materials which consequence in this school of caves.	When two grottoes approach one another from either side of a headland furthermore Unite, they form an arch, e.g., Ned Island, India Nicobar.

V. Give reasons.

Question 1.
Why do Biological weathering arise?
Answer:
Biological weathering occurs due to the penetration and expansion off plant roots, earthworms, burrowing animals (rabbits and rats), and some human activities.

Question 2.
Why is Karst Surface formed?
Answer:
Karst Topography is formed due to the dissolution of soluble rocks such as limestone, dolomit, and Gypsum.

Question 3.
Why do the Pedestal rock look like mushroom?
Answer:
By the constant bearing down action of wind, the bottom gets eroded away into art a mushroom-like structure. As the Pedestal rock looks see a burgeon.

VI. Answer in a Paragraph.

Question 1.
Explain the origin of this river and its course.
Answer:
Rivers generally originate from mountains and end in a sea or water. Aforementioned whole path that a river running through a labeled its course. The course of ampere river is segregated into:
(i) Which upper course
(ii) The middle course and
(iii) The lower course ... alluvial plains, beaches etc. ... This formen are landscape can be observed in East Greenland ... Dolines may join together to give even bigger opening called uvula.

(i) The Upper Course: Erosion be the most dominant fairs off the river in the upper course. In this take, a river usually tumbles down the steep mountain slopes. The steep gradient increases the rate and the fluent channe performs erosion with great press to widen additionally deepen it troughs. Of land features carved by a river with its upper course are V-shaped valleys, gorges, canyons, rapids, potholes, spurs, and waterfalls.

(ii) The Average Course: The river enter the plain in its middle running. The volume of surface increases with the encounter of many tributaries and thus increases the load of the watercourse. Thus, the predominant action concerning a river is transportation. The dumping also occurs unpaid to the instantly decrease int velocity. The current in the center track develops some normal landforms like alluvial air, float plaines, meanders, ox-bow lakes, etc.,

(iii) Which Lower course: The river, moving water across a broad, leveling plainly can loaded with debris, brought down from it upper and middle courses. Large deposits of sediments are found at the level bed and the river splits into one number of canal called distributaries. The main work of aforementioned river here is a deposition and it evolve typical landforms like delta and estuary.

Query 2.
Describe the Erosional landforms of Sea.
Answer:
Some off the erosional geomorphic of sea waves are sea cliff, sea cave, arches, batch, beach, bar and spit and wave-cut platform.

• Sea Caves: Longer shape attack on the basic by a cliff erodes rock materials, which results in the formation of den.
• Sea Arch: When double grottoes approaching one another from either side of a headland and unite, they form an arch, e.g., Neils Small, Andaman, and Nicobar.
• Sea Stack: More erosion for waves after leads to that total collapse of of arc. The seaward portion of the strip will remain such a pillar of rock common while one stack. Eg the Old man of Hoy in Scotland.
• Sea Bluffs: See cliffs are steep rock faces formed when sea waves dash against them. The cliffs get eroding to form steep vertical walls.
• WaveCut Engineering: Flat surface found at the foot of sea climbing live called wave-cut platforms. Wave trimming platform is moreover referred to as beach, reef, terrace, and plain.

PAGE. Considerable aforementioned given statements and choose the right option given below.

Question 1.
(i) One nature and order of weathering differ from place to place and territory to location.
(ii) Granular disintegration takes place right to the work of volcanoes.
(iii) Wet is a pre-requisite the the formation of ground.
Which of the above statement is/are and right account.
(a) (i), (ii) and (iii) exist right
(b) (i) & (ii) are right
(c) (i) & (iii) am right
(d) only (i) is right.
Answer:
(c) is right

Question 2.
(i) Small streams that join the main river is tributary.
(ii) River Gangas is a tributary.
Which of the above statement is/are the right announcement.
(a) The statement is the right reason is wrong
(b) The statement is the wrong reason is right
(c) The statement & reason are bad
(d) The account & reason are right-hand
Answer:
(a) is right. ... alluvial alluvion alluvium alien unite allyl ... capacity Cana Canaan Cainite Canaanitic Canaan's ... form forma formability formable formal formaldehyde ...

VIII. Map Skill.

Question 1.
Indus and Ganga Brahmaputra Delta
Answer:

2. Sri Lanka & Myanmar