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4.S.St.Chapter5.Bricks and Bridges

Class 4  subject S.St.
Chapter 5  Bricks and Bridges
A.Tick the correct option:
1.Lokhan lives in a state of--
(b) Arunachal Pradesh
2. The material which helps in making of building strong--
(c) Cement
3. Bridges help in the movement of--
 (a) Vehicles
4. The house that uses is strong material --
 (c) Apartment
B. Fill in the blanks:
1. Lokhan went to construction site where his father works.
2. Bricks are made at a kiln.
3 .Ayaan has never crossed bamboo bridge.
4. The earlier Suspension Bridges were made of wood and rope
5. The development in Science and Technology has enabled us
to construct strong bridges. 
C. Name the type of bridges as per the given clues: 
Ans.
1. Suspension
2 .Cable Stayed
3. Cantilever
4. Bridge
D.Answer the following questions:
Q1. List the types of materials used in making temporary house and permanent house.
Ans.The different types of material used in building houses.
 Temporary houses are built with mud, thatch, straw, bamboo and wood.
   Permanent houses are built with bricks, stones, cement, iron rods, glass, wood etc.
Q2.Write two benefits of modern building materials.
Ans.Modern building materials made the buildings strong and safe. 
Q3 What is a bridge ? How is it useful?
Ans.A Bridge is a structure to cross water bodies , mountains, valleys etc. It helps in the                             
movement of people, goods and vehicles. 
Q4. Briefly explain any two types of bridges.
Ans.Types of bridges:
 Suspension Bridge-- It can cover a long distance. The earlier suspension bridges were made
of wood and rope. But now they are made of steel.
Cable Stayed Bridge-- It uses short cables that are attached to pillars. 
Q5. Highlight the differences between the lives of Lokhan and Ayaan.
Ans. Lokhan lives in a village Dong across river Lohit in Arunachal Pradesh.His small hut ,which
is easily damaged by strong winds. He crosses the bamboo Bridge. But Ayaan lives on the other
side of river.His house is very strong. He has never crossed the bamboo bridge. 

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