Class-4 ENGLISH Chapter-10 KEEP YOUR ENVIRONMENT CLEAN

 EVENTS CONVENT HIGH SCHOOL

19/01/2021                        CLASS-4                                  SLOT-2

ENGLISH

CHAPTER -10 KEEP YOUR ENVIRONMENT CLEAN

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New Words

1.     Required

2.    Contamination

3.    Pollution

4.    Industrial

5.    Attractive

6.    Garbage

7.    Sewage

8.    Factories

9.    Poisonous

10.  Diseases

11.   Irrigated

12.  Fertilizers

13.  Dangers

14.  Microwave

15.  Recycling

16.  Separately

17.  Quantity

18.  Encouraging

19.  Monoxide

20. Increasing

 

A.  Answer the questions:-

Que-1 What is Waste?  

Ans-1 A substance with no further use is called waste.

Que-2 What are the main causes of pollution?

Ans-2 The industrial revolution, growth of cities, packing materials and use of motor vehicles are the main causes of pollution.

Que-3 What is the harm caused by pollucted water?

Ans-3 Factorise drain out industrial liquid waste in the river water.  IT contains many harmful chemicals which cannot be removed from it. Faeces of animals and humans give rise to many germs in water. It is unfit for drinking.

Que-4 What are the types of waste?

Ans-4 There are two types of waste : Biodigradable and Non biodegradable

1.Biodegradable- Things made from plants and animlas decay naturally . they are called biodegradable.

2.Non-biodegradable- Many waste things like tin,glass,plastic can not be recycled naturally. These are called non-biodegradable.

 

Que-5 what is the effect of pollution on us?

Ans-5 The effect of pollution: Pollution may cause such diseases as cancer and asthama. Pollution lead acid rain or harm the living things.

Draw a Diagram of Pollution

B. Fill in the blanks with above 'clean' words :

（a)Brush your coat- it's covered in dust.

（b) Take the books off the shelf and Dust them.

（c)The waiter Wipe tables immediately.

（d)Scrub the floor with water and soap.

  C.Complete the following sentence with me/us/you/him/her/it/them:

（a) We want to see them but they don't want to see us

（b) Where are my keys!Icouldn't find me.

（c) Where is Julia ?Iwant to talk to her

（d) He wants the key. Can you give it  to her.

（e) I'm going out. You can come with me