These We and Our World Class 4 DAV Solutions and DAV Class 4 SST Chapter 5 Question Answer – Bricks and Bridges are thoughtfully prepared by experienced teachers.
DAV Class 4 SST Chapter 5 Question Answer – Bricks and Bridges
DAV Class 4 SST Ch 5 Question Answer – Bricks and Bridges
Something To Know
A. Tick (✓) the correct option:
Question 1.
Lokhan lives in the state of –
(a) Andhra Pradesh
(b) Arunachal Pradesh
(c) Uttar Pradesh
Answer:
(b) Arunachal Pradesh
Question 2.
The material which helps in making a building strong-
(a) Straw
(b) Mud
(c) Cement
Answer:
(c) Cement
Question 3.
Bridges help in the easy movement of-
(a) Vehicles
(b) Valley
(c) River
Answer:
(a) Vehicles
Question 4.
The house that uses strong material-
(a) Tree house
(b) Stilt house
(c) Apartment
Answer:
(c) Apartment
B. Fill in the blanks:
Help Box-
kiln, strong, rope, construction, bamboo
1. Lokhan went to a site where his father works.
2. Bricks are made at a
3. Ayaan has never crossed a bridge.
4. The earlier Suspension Bridges were made of wood and
5. The development in science and technology has enabled us to construct bridges.
Answer:
1. construction
2. kiln
3. bamboo
4. rope
5. strong
C. Name the type of bridges as per the given clues:
Across (→):
1. Earlier, it was made up of wood and rope.
2. It uses short cables attached to pillars.
Down (↓):
3. It uses truss formations below and above the bridge.
4. It is built across a river.
Answer:
D. Answer the following questions:
Question 1.
List the types of materials used in making a temporary house and a permanent house.
Answer:
A temporary house is built with mud, thatch, straw, bamboo and wood. A permanent house is built with bricks, stones, cement, iron rods, glass, wood, etc.
Question 2.
Write two benefits of modern building materials.
Answer:
- Modern building materials make the building strong and safe.
- They cannot be damaged by strong winds.
Question 3.
What is a bridge? How is it useful?
Answer:
- A bridge is a structure that is built over a road, railway/railroad, river, etc. so that people or vehicles can cross from one side to the other.
- It is useful as it helps in the easy movement of people, goods and vehicles.
Question 4.
Briefly explain any two types of bridges.
Answer:
Bridges are of many types. Two of them are-
- Suspension bridge: It can cover a long distance. It is made of steel.
- Cantilever bridge: They support the load through diagonal bracing. It oftern uses truss or tie up formations both below and above the bridge.
Question 5.
Highlight the differences between the lives of Lokhan and Ayaan.
Answer:
Life of Lokhan:
- Lokhan is a village boy.
- It is easy for Lokhan to cross a bamboo bridge.
- Lokhan is not familiar with bridges other than the bamboo bridge.
- Lokhan is the son of a worker at a construction site.
Life of Ayaan:
- Ayaan is a city boy.
- Ayaan has never crossed a bamboo bridge.
- Ayaan has seen many types of bridges.
- Ayaan is the son of the manager of that construction site.
Value-Based Question
A Mall is being constructed in Mumbai. People are working day and night to complete the project. Viren, an electrician was standing on an iron ladder with bare feet. While working, he got an electric shock.
Question 1.
What precautions Viren could have taken before starting his work?
Answer:
Before starting his work Viren could have put on his slippers.
Question 2.
What should you do in such an emergency?
Answer:
I would immediately provide him with a pair of slippers.
Question 3.
What is the importance of awareness and responsibility in the performance of our duties?
Answer:
An aware and responsible citizen is able to perform his/her duties with greater capabilities without risking his/her life.
Map Skill
On a political map of India, mark the states where the following bridges are located:
1. Lakshman Jhula
2. Howrah Bridge
3. Golden Bridge
4. Bandra Sea Link Bridge
Answer:
Something To Do
Question 1.
Delhi Metro Rail Corporation is working on extending the metro rail network across the city of Delhi. List the people involved in making a metro bridge.
(a) Engineer
(b) Mason
(c) ……………….
(d) ……………..
(e) ……………..
(f) ……………….
(g) ……………….
(h) ……………….
Answer:
(c) Architect
(d) Glazier
(e) Wielder
(f) Labour
(g) Electrician
(h) Contractor
Question 2.
Identify the types of bridges:
(a) B_A_bridge
(b) A_H_ bridge
Answer:
(a) BEAM bridge
(b) ARCH bridge
Question 3.
Look at some pictures of tools. Name any four tools used by a carpenter, painter, tailor, electrician, mason and 
| Carpenter | Painter | Tailor | Electrician | Mason | Plumber |
| 1. | |||||
| 2. | |||||
| 3. | |||||
| 4. |
Answer:
| Carpenter | Painter | Tailor | Electrician | Mason | Plumber |
| 1. Hammer | Brush | Sewing machine | Screw-driver | Gauge | Thread |
| 2. Axe | Trowel | Scissors | Screw | Trowel | Hammer |
| 3. Auger | Ladder | Tape | Chisel | Hammer | Clamp |
| 4. Anvil | Needle | Drill |
Question 4.
Which type of bridges should be constructed at the following places and why?
| Type of bridge | Reason | |
| (a) Between mountains | – | – |
| (b) Across a river | – | – |
| (c) To ease road traffic | – | – |
Answer:
| Type of bridge | Reason | |
| (a) Between mountains | Suspension bridge | They can cover a long distance. |
| (b) Across a river | Cantilever bridge | They support the load through diagonal bracing. |
| (c) To ease road traffic | Flyovers | They ease the movement of traffic. |
DAV Class 4 Social Studies Chapter 5 Question Answer – Bricks and Bridges
I. Multiple Choice Questions (MCQs)
Tick (✓) the correct option:
Question 1.
Lokhan crossed a
(a) suspension bridge
(b) bamboo bridge
(c) cantilever bridge
Answer:
(b) bamboo bridge
Question 2.
Lokhan wanted to know the making process of
(a) bricks
(b) tiles
(c) cement
Answer:
(a) bricks
Question 3.
Firing makes the bricks
(a) colourful
(b) strong
(c) weak
Answer:
(b) strong
Question 4.
Ayaan showed Lokhan the pictures of
(a) flats
(b) tents
(c) bridges
Answer:
(c) bridges
Question 5.
Howrah bridge is built on the river
(a) Ganga
(b) Yamuna
(c) Hoogli
Answer:
(c) Hoogli
II. Fill in the Blanks
1. Clay is mixed with water to make a …………….
2. The village in which Lokhan lives receives rainfall ………………
3. A tent is made up of or nylon …………….
4. Suspension bridge nowadays are made of …………….
5. The cable stayed bridge uses short that are attached to pillars …………….
Answer:
1. dough
2. heavy
3. canvas
4. steel
5. cables
III. True/False
1. Godavari Arch Bridge is located in Kolkata, West Bengal.
2. Lokhan wanted to become an engineer and design some wonderful bridges.
3. The process of moulding gives bricks a definite shape.
4. Ayaan didn’t know about suspension bridge.
5. Hut is an example of temporary house.
Answer:
1. False
2. True
3. True
4. False
5. True
IV. Match the Following Column ‘A’ Column ‘B’
| 1. Howrah Bridge | (i) Truss bridge |
| 2. Bandra Sea | (ii) Suspension bridge Link Bridge |
| 3. Rajahmundry | (iii) Cantilever bridge Railway Bridge |
| 4. Golden Bridge | (iv) Beam bridge |
| 5. Lakshman Jhula | (v) Cable stayed bridge |
| 6. Gandhi Setu | (vi) Movable bridge |
Answer:
| 1. Howrah Bridge | (iii) Cantilever bridge Railway Bridge |
| 2. Bandra Sea | (v) Cable stayed bridge |
| 3. Rajahmundry | (i) Truss bridge |
| 4. Golden Bridge | (vi) Movable bridge |
| 5. Lakshman Jhula | (ii) Suspension bridge Link Bridge |
| 6. Gandhi Setu | (iv) Beam bridge |
V. Name the Following
1. The bridge that supports the load through diagonal bracing.
2. The bridges that were previously made of wood and rope.
3. The step through which clay is mixed with water to make a dough.
4. That makes the bricks strong.
Answer:
1. Cantilever
2. Suspension
3. Tempering
4. Firing
VI. Jumbled Words
1. Icay ………………………
2. mbbooa ………………………
3. unblgawo ………………………
4. mecent ………………………
5. ptemorray ………………………
6. floervys ………………………
7. tcanleervi ………………………
8. dgbrie ………………………
Answer:
1. clay
2. bamboo
3. bungalow
4. cement
5. temporary
6. flyovers
7. cantilever
8. bridge
VII. Cross the Odd One
1. flats; village; tent; havelies
2. glass; hut; cement; stones
3. river; valley; stream; pond
4. brick; mud; thatch; straw
Answer:
1. tent
2. hut
3. valley
4. brick
VIII. Short Answer Type Questions
Question 1.
Where does Lokhan live? Write three points about the place.
Answer:
Lokhan lives in a village Dong across River Lohit in Arunachal Pradesh. Three points about this place-
- It is a hilly area with a very small population.
- The village receives heavy rainfall.
- There is a river in this village. People have made a bamboo bridge on it to cross.
Question 2.
Name different types of bridges.
Answer:
The different types of bridges are:
1. Suspension Bridge
2. Cantilever Bridge
3. Cable Stayed Bridge
Apart from these some other types of bridges are:
(a) Truss Bridge
(b) Movable Bridge
(c) Arch Bridge
IX. Long Answer Type Questions
Question 1.
Describe the house in which Lokhan lives.
Answer:
- The house in which Lokhan lives is a hut.
- It is made up of mud, bamboo, straw and dry leaves.
- It is not very strong and gets easily damaged by strong winds.
- It gets flooded every time it rains and his parents have to repair it regularly.
Question 2.
Describe the main steps that are involved in brick making.
Answer:
Brick making process involves the following steps –
- Clay is mixed and stored in the open to make it soft and remove unwanted oxides. It is called mining.
- Clay is then mixed with water to make a dough. It is called tempering.
- A lump of mixture is taken, rolled in sand and put into a metal mould. This process is called moulding.
- The mould is emptied onto the drying area. After every two days, the bricks are turned over for uniform drying. Then they are ready for baking. This process is called drying.
- The last step is firing. The bricks are arranged in a kiln for baking. It makes the bricks strong.
DAV Class 4 SST Chapter 5 Notes – Bricks and Bridges
- Different types of materials are used in building houses. Temporary houses like huts are built with mud, thatch, straw, bamboo and wood. Permanent houses like flat are built with bricks, stones, cement, iron rods, etc.
- Brick-making involves several steps-mining, tempering, moulding, drying and firing.
- Bricks are made in kiln. They are also made by machines.
- Huts can be easily damaged by strong winds. But buildings are strong enough to be perished by such winds.
- Different types of bridges are found in India-Suspension Bridge, Cantilever Bridge and Cable Stayed Bridge.
- The Earlier suspension bridges were made of wood and rope. But now they are made of steel.
- Cantilever bridges support the load through diagonal bracing. Cable stayed bridges use short cables that are attached to pillars.
- Kiln: The place where bricks are baked.
- Suspension bridge: A bridge that hangs from steel cables that are supported by towers at each end.
- Cantilever bridge: A bridge made of a long piece of metal or wood that sticks out from a wall to support its end.
- Flvover: It is the bridge built over roads to ease the movement of traffic.