DAV Class 4 SST Solution Chapter 5 Bricks and Bridges
DAV School Books Class 4 SST Solution Chapter 5 Bricks and Bridges all Question Answer. DAV Class 4 5th Chapter Bricks and Bridges full Chapter explanation by expert teacher.
DAV School Books Class 4 SST Solution Chapter 5 Bricks and Bridges:
(A) Tick (✓) the correct option.
(1) Lokhan lives in the state of ———–.
(a) Andhra Pradesh
(b) Arunachal Pradesh
(c) Uttar Pradesh
Answer: (b) Arunachal Pradesh.
(2) The material which helps in making a building strong ——-.
(a) Straw
(b) Mud
(c) Cement
Answer: (c) Cement.
(3) Bridges help in the easy movement of ——-.
(a) Vehicles
(b) Valley
(c) River
Answer: (a) Vehicles.
(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: (klin, strong, rope, construction bamboo)
(1) Lokhan went to a ———— site where his father works.
Answer: Construction.
(2) Bricks are made at a ———–.
Answer: kiln.
(3) Ayaan has never crossed a ——– bridge.
Answer: bamboo.
(4) The earlier Suspension Bridges were made of wood and ——-.
Answer: rope.
(5) The development in science and technology has enabled us to construct —— bridges.
Answer: strong.
(C) Name the type of bridges as per the given clause.
Across
(1) Earlier, it was made up of wood and rope.
Answer: SUSPENSION.
(2) It uses short cables attached to pillars.
Answer: CABLESTAYED.
Down ↓
(3) It uses truss formations below and above the bridge.
Answer: CANTILEVER.
(4) It is built across a river.
Answer: BRIDGE.
(D) Answer the following questions:
(1) List the types of materials used in making a temporary house and a permanent house.
Answer: (a) Temporary Houses like huts, tents, tree houses and log cabins are built with mud, thatch, straw, bamboo and wood. A tent is made up of canvas or nylon.
(b) Permanent Houses like bungalows, flats, villas, havelis are built with eps disb bricks, stones, cement, iron rods, glass, wood, etc.
(2) Write two benefits of modern building materials.
Answer: Following are the benefits of modern building materials.
- they made the building strong and safe.
- Due to modern building materials, buildings cannot get easily damaged.
(3) What is a bridge? How is it useful?
Answer: The development in science and technology has made it possible to construct strong bridges across water bodies, mountains, valleys, etc. They help in the easy movement of people, goods and vehicles.
(4) Briefly explain any two types of bridges.
Answer: The development in science and technology has made it possible to construct strong bridges across water bodies, mountains, valleys, etc. They help in the easy movement of people, goods and vehicles.
Following are the two types of bridges.
(1) Suspension Bridge: It can cover a long distance. The earlier suspension bridges are made of wood and rope. But now they are made of steel.
(2) Cantilever Bridge: They support the load through diagonal bracing. It often uses truss formation both below and above the bridge.
(5) Highlight the differences between the lives of Lokhan and Ayaan.
Answer: Lokhan was from a poor house, Ayan was from a rich house. Lokhan’s father was a worker, Ayan’s father was a manager.
Map skills
(1) On a political map of India, mark the states where the following bridges are located:
Lakshman Jhula
Answer: Uttrakhand.
Howrah Bridge
Answer: West Bengal.
Golden Bridge
Answer: Gujarat.
Bandra Sea Link Bridge
Answer: Maharashtra.
Something to do
(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) Architects
(d) Geologist
(e) Workers
(f) Police
(g) Electricians
(h) Rescue guards
(2) Identify the types of bridge
(3) Look at some pictures of tools. Name any four tools used by carpenter, painter, tailor, electrician, mason and plumber.
Carpenter | Painter | Tailor | Electrician | Mason | Plumber |
(1) | |||||
(2) | |||||
(3) | |||||
(4) |
Answer:-
(1) Carpenter:- Hammer, Drill machine, Scale, Screwdriver.
(2) Painter:- Paint brush, Painting colours, Rollers, Canvas.
(3) Tailor:- Scissors, Tape, Pin cushion, Chalk.
(4) Electrician:- Tape measure, Screwdriver, Hammer, Plier.
(5) Mason:- Brick Towel, Metal Float, Measuring Tape, Line Dori.
(6) Plumber:- Spanner, Saw, Pipe, Pipe wrench.
(4) Which type of bridges should we construct at the following place and why?
(A) At mountains
Type of bridge:- Suspension bridge
Reason:- Because these bridges can cover long distances.
(B) Across a river
Type of bridge:- Beam bridge.
Reason: Because the height of this bridge is high, water cannot harm them. They can also carry more weight.
(C) To ease road traffic
Type of bridge:- Flyover bridge.
Reason:- Because the construction of the flyover provided two more lanes and thus increased the capacity of the roadway.
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