Question

CNG
Pollutants liberated
8. Project Work (AS)
Choose five families of your neighbourhood, collect the information about the measu
that they adopt to conserve energy resources in transport and cooking.
Name of Number of

the Head of members in family
the family
No of vehicles
Amount spent for
Amount spen
using
Fuel in one month Cooking pu
Make a report on your observation
.​

Answer 1

Answer:

COAL AND PETROLEUM

Articles/ Activities(A)

Articles/ Materials used

30-40 years ago (B)

Articles/ Materials used Today (C)

Chapter

Deekshita is struggling to take down a pickle jar and the jar which at the top most section of a shelf.

Grandfather: Be careful, it may fall down and break.

Deekshita: No, I am taking down a plastic jar. It won’t break.

Deekshita realizes that Grandfather was thinking of the clay jars that were used in olden days. Now a days

plastic jars are used and they are unbreakable.

What else has changed, she wondered? Help Deekshita to find out.

Activity-1

Identifying articles and materials used for various purposes

Have a look at table 1. Column (A) gives the names of some activities and items. Ask your grandparents or

other older people about the names of the materials which is used for the items given in column (A), and write

them in column B. Then in column C, write the names of materials being used at present. Few examples are given

to guide you.

Table-1

Articles/ Activities (A) Articles/ Materials used

Articles/ Materials used

30-40 years ago (B)

Today (C)

Containers for storing pickle Clay jars

Packing food for a journey

Plastic tiffin boxes

Water pipes in the house

Hair combs

Vessels for cooking food Copper vessels Steel

vessels

Fuels used to cook food

Fuel used in a train engine Coal

Luggage for carrying clothes Metal trunks

Water buckets,Pails

Water storages in houses

Plastic buckets

Construction material

Jewellery

Furniture (chairs, cots)

From activity 1, you have a long list of materials. Some of them like wood, metals (iron, silver, gold etc) were

used ten years, fifty years and even hundred years ago. Do your grandparents remember using plastic when they