Samacheer Kalvi 7th Social Science Geography Solutions Term 1 Chapter 2 LandForms

 

Tamilnadu Samacheer Kalvi 7th Social Science Geography Solutions Term 1 Chapter 2 LandForms

Samacheer Kalvi 7th Social Science LandForms Textual Evaluation

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7th Std   Term-1

I. Choose the correct answer:

Question 1.

is a deposition of river sediments along the foot-hills.

(a) Plunge pool

(b) Alluvial fan

(c) Floodplain

(d) Delta

Answer:

(b) Alluvial fan

Question 2.

Courtallam falls is located across the river.

(a) Cauvery

(b) Pennar

(c) Chittar

(d) Vaigai

Answer:

(c) Chittar

Question 3.

The landform created by glacial deposition is

(a) Cirque

(b) Arete

(c) Moraine

(d) Tam lake

Answer:

(c) Moraine

Question 4.

Large deposits of loess are found in

(a) USA

(b) India

(c) China

(d) Brazil

Answer:

(c) China

Question 5.

are not associated with wave erosion

(a) Cliff

(b) Sea arch

(c) Stack

(d) Beaches

Answer:

(d) Beaches

II. Fill in the Blanks

1.The process of breaking and crumbling of rocks is weathering

2.The place where the river joins a lake or a sea is known as river mouth

3.Inselbergs are found in the Kalahari  desert in South Africa.

4.A cirque is known as Kar in Germany.

5.The first longest beach in the world is Miami

III. Match the following

1. Breaking and crumbling

of rocks   - Weathering

2. Abandoned meander

loops    - Oxbow lake

3. Large body of moving

ice   - Glacier

4. Crescent shaped sand

dunes    - Barchans

5. Vembanad lake   - Lagoon

IV. Consider the following statement and (✓) Tick the appropriate answer.

Question 1.

Assertion (A) : The deltas are formed near the mouth of the river.

Reason (R) : The velocity of the river becomes slow when it approaches the sea.

(a) Both A and R are correct

(b) A is correct and R is wrong

(c) A is wrong and R is correct

(d) Both A and R are wrong

Answer: (a) Both A and R are correct

Question 2.

Assertion (A) : Sea arches in turn become Sea Stacks.

Reason (R) : Sea Stacks are the results of wave deposition.

(a) Both A and R are correct

(b) A is correct and R is wrong

(c) A is wrong and R is correct

(d) Both A and R are wrong

Answer:

(b) A is correct and R is wrong

V. Answer the following.

Question 1.

Define erosion.

Answer:

Erosion is the wearing away of the landscape by different agents like water, wind, ice and sea waves.

Question 2.

What is a plunge pool?

Answer:

Plunge pool is a hollow feature at the base of a waterfall which is formed by cavitation.

Question 3.

How are Ox – bow lakes formed?

Answer:

Due to continuous erosion and deposition along the sides of the meander, the ends of the meander loop comes closer and closer. In due course of time the meander loop cuts off from the river and forms a cutoff lake, also called an Ox-bow lake.

Question 4.

Name the major landforms formed by glacial erosion.

Answer:

Cirque, Aretes, U’ Shaped Valley

Question 5.

Give a note on Mushroom rocks.

Answer:

In deserts rocks in the shape of a mushroom, commonly called mushroom rocks.

Question 6.

What is a lagoon? Give an example.

Answer:

Lagoon is a shallow stretch of water partially or completely separated from the sea.

 E.g. Chilka lake in Odisha, Pulicat lake in Tamil Nadu and Andhra Pradesh and Vembanad lake in Kerala are the famous lagoons in India.

VI. Distinguish between

Question 1.

Tributary and Distributary

Answer:

Question 2.

‘V’ shaped valley and ‘U’ shaped valley

Answer:

Question 3.

Continental glacier and Mountain glacier

Answer:

VII. Give reason

Question 1.

The ends of the meander loops come closer and closer.

Answer:

Due to continuous erosion and deposition of rivers along the sides of the meander, the ends of the meander loop comes closer and closer.

Question 2.

Flood plains are very fertile.

Answer:

At times the river overflows its banks. This leads to the flooding of the neighbouring areas. As the river floods, it deposits layers of fine soil and other material called sediments along its banks. This leads to the formation of a flat fertile floodplain.

Question 3.

Sea caves are turn into stacks.

Answer:

As the cavities of sea caves become bigger, only the roof of the caves remain to form sea Arches. When erosion further breaks the roof, only walls are left, thus forming stacks.

VIII. Answer in a paragraph

Question 1.

Explain different landforms produced by river erosion. Answer:

The running water in the river erodes the landscape, which creates a steep-sided valley like the letter ‘V’ known as ‘V’ shaped valley.

Falling of river water over a vertical step in the river bed is called waterfall. It is formed when the soft rocks are removed by erosion. E.g. Coutrallam falls across the river Chittar in Tamil Nadu.

Plunge pool is a hollow feature at the base of a waterfall which is formed by cavitation. Alluvial fan is a deposition of sediment occurs at which the river enters a plain or the foot-hills.

As the river enters the plain it twists and turns forming large bends known as Meanders.

Eg. Meanders along the River Vellar near Sethiyathope in Cuddalore District, Tamil Nadu.

Due to continuous erosion and deposition along the sides of the meander, the ends of the meander loop comes closer and closer. In due course of time the meander loop cuts off from the river and forms a cutoff lake, also called an Ox-bow lake.

Question 2.

Describe the landforms associated with wind.

Answer:

Winds erode the lower section of the rock more than the upper part.

An isolated residual hill, standing like a pillar with rounded tops are called Inselbergs.

E.g. Inselberg in the Kalahari Desert of South Africa.

When the wind blows, it lifts and transports sand from one place to another. When it stops blowing the sand falls and gets deposited in low hill – like structures. These are called sand dunes. The crescent shaped sand dunes are called Barchans.

When the grains of sand are very fine and light, the wind can carry it over very long distances. When such sand is deposited in large areas, it is called Loess. Large deposits of loess are found in China.

Question 3.

How are aretes formed?

Answer:

Glaciers erode the landscape by levelling soil and stones to expose the solid rock below.

Cirque is a glacially eroded rock basin, with a steep side wall and steep head wall, surrounding an armchair-shaped depression.

As the ice melts, they get filled up the cirque with water and become beautiful lakes in the mountains called as Tam Lake. When two adjacent cirques erode towards each other, the previously rounded landscape is transformed into a narrow rocky, steep – sided ridge called Aretes.

Activity

Question 1.

Fill in the corresponding columns with reference to the landform features given below

Answer:

Barchan, ‘V’ Shaped valley, Cliff, Arete, Inselberg, Moraine, Alluvial fan, Lagoon

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Tamilnadu Samacheer Kalvi 7th Social Science Civics Solutions Term 1 Chapter 2 Political Parties Text Book Evaluation

Tamilnadu Samacheer Kalvi 7th Social Science Civics Solutions Term 1 Chapter 2 Political Parties

Samacheer Kalvi 7th Social Science Political Parties Textual Evaluation

 

தமிழ் கல்வி

7th Std   Term-1

I. Choose the correct answer:

Question 1.

What is meant by Bi-party system?

a) Two parties run the government

b) Two members run a party.

c) Two major political parties contest election.

d) None of these.

Answer:

 c) Two major political parties contest election.

Question 2.

Which system of government does India have?

a) Single-party system

b) Bi-party system

c) Multi-party system

d) None of these

Answer:

c) Multi-party system

Question 3.

Recognition of a political party is accorded by……………..

a) The Election commission

b) The president

c) The supreme court

d) A committee

Answer:

a) The Election commission

Question 4.

Political parties are generally formed on the basis of.

a) Religious principles

b) Common interest

c) Economic principles

d) Caste

Answer:

b) Common interest

Question 5.

Single-party system is found in

a) India

b)U.S.A

c) France

d) China

Answer:

d) China

II. Fill in the blacks:

1.Political parties form the back bone of democracy.

2.Every party in our country has to register with  Election Commission of India

3. Political parties serve as intermediaries between the citizen  and policy makers

4. A registered but unrecognised political party cannot contest election on its own symbol.

5. The leader of the opposition party enjoys the rank of Cabinet minister

III. Match the following:

1. Democracy  c) rule of the people

2. Election commission  d) free and fair election

3. Majority party  b) forms the government

4. Opposition party  a) criticize the government policies

IV. Consider the following statements: Tick (✓)  appropriate answer:

Question 1.

Which of the following statement is/are correct?

a) Every party in the country has to register with the election commission.

b) The commission treats all the parties equally.

c) Election commission allots a separate symbol for recognized parties.

d) All the above.

Answer:

d) All the above.

Question 2.

Assertion (A) : Majority party plays a decisive role in making laws for the country.

Reason (R) : The number of candidates elected is more than the others in the election. ;;

a) R is the correct explanation of A.

b) R is not the correct explanation of A.

c) R is wrong A is correct.

d) A and R are wrong.

Answer:

a) R is the correct explanation of A.

V. Answer in one or two sentences:

Question 1.

What are the basic components of a political party?

Answer:

The basic components of the party are the leader, the active members and the followers.

Question 2.

Name the three major types of party systems.

Answer:

There are three major types of the party system:

Single party system,

Bi – party System,

Multiparty system.

Question 3.

Name the countries which follow the Bi – party system.

Answer:

Bi- party system can be seen in UK and USA.

Question 4.

Write a note on Coalition Government.

Answer:

Without a majority, some parties join together to form the government, known as Coalition Government.

VI. Answer the following:

Question 1.

Write any four functions of a political party?

Answer:

The political parties provide loyal opposition to accountability and stability.

They put forward different policies and programmes for the welfare of the people.

They connect the society and the state.

They form and run the government and develop public policy.

When is a political party recognized as a National Party? Answer:

Criteria for A political party to be recognised as a National Party

The party that secures should atleast 6% of the valid votes in the Lok Sabha election or assembly elections in four states.

They must win 4 seats in Lok sabha from any State/States

It has to win 2% of seats in Lok sabha from atleast 3 different states in the latest general election.

VII. HOTs: Question 1.

Are political parties are necessary for a democratic country?

Answer:

Yes political parties are necessary for a democratic country because

They are the backbone of democracy.

They are essential elements to form the government.

Citizens can elect their representatives.

Citizens also vote for the party of their choice and thus influence Government formation.

Question 2.

Give any three names of National party, Regional party, and Registered but unrecognized party.

Answer:

National Party: Indian National Congress, Bharatiya Janata Party, Communist party of India.

Regional Party: All India Anna Dravida Munnetra Kazhagam, Dravida Munnetra Kazhagam, Desiya Murpokku Dravidar Kazhagam, Pattali Makkal Katchi

Registered but unrecognized party: Labour party of India, Bhartiya Panchayat party, Indian Indira Congress.

VIII. Activity   Question 1.

Write an election manifesto (if you were a party leader).  

Answer:

Take measures to give a corruption-free Government.

The agriculture sector would be given prior importance.

Students will be taught technical skills at school which would enhance their scope for employment.

Free and quality medical care would be made available to all needy people.

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CBSE NCERT Solutions Class 4 Evs Chapter 3- A Day with Nandu

Access Ncert Solution For Class 5 EVS Chapter 3

Page No: 21

Find out

1. Nandu is only three months old, but he weighs 200 kilograms. What is your weight?

Answer:

My weight is 20 kg.

2. Can you find out – the weight of how many children like you will add up to Nandu’s weight?

Answer:

It’s found that the weight of Nandu equals the sum of 10 children of my weight.

Fun and Games

1. If you were Nandu, and you lived in a herd, what kind of things would you do?

Answer:

If I were Nandu living in a herd I would play, dance, eat and dance an entire day. Later, the night I would sleep with my mother.

2. In the elephant herd, the oldest female elephant decides everything. Who takes decisions in your family?

Answer:

Both my parents together take most of the decisions in my family.

3. Nandu did things that he liked to do. If you could spend a whole day with your friends, what all would you do?

Answer:

I would like to play games, sing, dance, tell and listen to funny stories, eat and have lots of fun if I could spend a whole day with my friends.

4. Find out and write, which other animals live in herds

Answer:

Other animals that live in herds are deer, cows, horses, zebra, sheep, penguins, rhinos etc..

5. Do you also live in a group? Do you like to live together like that? Why would you like or not like to live in a group?

Answer:

Yes, in school and home I live in a group of my friends and family respectively.

Why I would like	Why I would not like
– We can talk to people as they are around us. – We can share our feelings instantly. – Cost of living can be reduced by sharing things. – We feel safer and secure when in a group. – We can help and get help to do different tasks.	– It can lead to quarrels and fights over small things – There is less or no privacy. – Food and space is required for each person in the group. – We have to adjust ourselves according to others. – Difference of opinions can lead to separation of the group.

6. How do elephants feel when they kept in chains? Discuss and share your feelings.

Answer:

When elephants are kept in chains they feel retrained and helpless to do anything. This will make the elephant feel sad and unhappy. Due to this elephant may react aggressively or they lie down around felling depressed for their lack of movement. I strongly feel that just like any other living being elephants too desire freedom and they should not be chained.

7. Have you ever taken a ride on an elephant? How did it feel?

Answer:

Yes, I have taken a ride on an elephant and it felt thrilling and exciting.

8. Which animals have you sat on? Write their names.

Answer:

I have sat on horse, elephant, camel and buffalo.

9. You must have seen many animals around you – in books, in movies. Some may be alone, some in groups. Find out more about any one of these animals and write about it.

Answer:

I majorly see dogs around me. They are four foot animals who sleep during the day for 4 – 5 hours. They eat meat, rice, milk, bread etc… As they are active during the night they give security from thieves and also keeps an eye on our homes. If anything abnormal happens they’d attack or start barking loudly. Female dogs give birth to babies which are called puppies.

Think and Write

1. Why do you think the egret is sitting on the buffalo?

Answer:

The main reason why an egret sits on a buffalo is to eat flies, grasshoppers and other pests on the buffalo. By this way, the egret gets its food as well as the buffalo gets rid of germs and dirt. Hence, it’s a mutual benefit for both.

2. Have you seen any animal riding on another animal? Write its name.

• The animal which is riding.

• The animal which gives the ride.

Answer:

Yes, I have seen an oxpecker sitting on a zebra.

Hence, the animal which is riding is the oxpecker and the one which gives a ride is zebra.

3. Which animals do we use for riding?

Answer:

Animals using for riding are horse, camel, donkey, camel and yak.

4. Which animals do we use for carrying loads?
Answer:

For carrying loads buffalo, elephant, horse, donkey, yak and camel are used.

What do They Say?

Discuss

1. You have read what these animals say. Why do you think that some of them are sad?

Answer:

Some the animals are sad as they are separated from their natural habitats. They are captured and put in circuses to entertain people where they are brutally treated to obey their master’s order. Hence, these animals are feeling sad because they have lost their freedom to live or survive.

2. How do you think they are different – the monkeys that dance to entertain people and the monkeys that are free?

Answer:

Yes, they both are different. The monkeys that are free are happier in comparison to those that dance to entertain people. Capturing animals and using them for our own benefits is against their wish. It makes them feel unhappy and depressed to the fact that they are being instructed by a human.