Assam Jatiya Bidyalay Class 7 English Chapter 9 Let’s Save Our Earth

Assam Jatiya Bidyalay Class 7 English Chapter 9 Let’s Save Our Earth, Assam Jatiya Vidyalaya | অসম জাতীয় বিদ্যালয় ইংৰাজী Class 7 Question Answer to each chapter is provided in the list of SEBA so that you can easily browse through different chapters and select needs one. Class 7 English Question Answer can be of great value to excel in the examination.

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Assam Jatiya Bidyalay Class 7 English Chapter 9 Let’s Save Our Earth Notes covers all the exercise questions in Assam Jatiya Bidyalay SEBA Textbooks. The provided here ensures a smooth and easy understanding of all the concepts. Understand the concepts behind every chapter and score well in the board exams.

Let’s Save Our Earth/পৃথিৱীক ৰক্ষা কৰোঁ আহা

Chapter -9


অসম জাতীয় বিদ্যালয়

1. Answer the following questions সম্পূৰ্ণ বাক্যৰে উত্তৰ দিয়া ―

(a) What were the people doing? মানুহবোৰে কি কৰিছিল? 

Ans: The people were taking out a procession, chanting slogans and displaying placards in their hands. 

(b) When do the people observe the World Environment Day? 

মানুহবোৰে বিশ্ব পাৰিপাৰ্শ্বিক দিৱস কেতিয়া পালন কৰে? 

Ans: The people observes the World Environment Day on the 5th of June.

(c) Who first identified global warming? গোলকীয় উষ্ণতা প্রথমে কোনে চিনাক্ত কৰিছিল? 

Ans: A Swedish Chemist Savante Arrhenius identified global Warming in 1896 for the first time.

(d) What is fossil fuel? 

জীৱাশ্ম ইন্ধন কি? 

Ans: Fuel such as coal or oil, that was formed over millions of years from the remains of animals or plants is called fossil fuel.

2. Answer the following questions.

তলৰ প্ৰশ্নসমূহৰ উত্তৰ দিয়া―

(a) What do you mean by green house gases? 

Green house gases বুলিলে কি বুজা।

Ans: Carbon dioxide, Carbon monoxide, nitrous oxide, Sulphur dioxide, methane etc, are together called greenhouse gases (GHG). These gases come out from various industries and mix up with the atmosphere. 

(b) Why are the green house gases important? 

Greenhouse gases বোৰ কিয় দৰকাৰী? 

Ans: The greenhouse gases are important for the atmosphere because they keep the world fit for living. These gases traps heat within the atmosphere.

(c) What is Green house effect? 

Green house effect কি? 

Ans: The increasing Green house gases covers the earth like a blanket not allowing the heat within the atmosphere to go beyond the atmosphere thus increasing the temperature of the earth. This situation is of Called Green house effect.

(d) What is called global warming?

গোলকীয় উষ্ণতা কি?

Ans: The whole process of rise of temperature of the earth as a result of green house effect is called global warming. This affects our lives in various ways causing change in our climate.

3. Write about some effects of global warming? 

উষ্ণতাৰ কিছুমান প্ৰভাৱৰ বিষয়ে লিখা।

Ans: The earth becomes warm due to global warming causing change in the climate. For this the ice caps and glaciers are melting every moment causing rise in the sea-level, flooding islands and low lying areas. Due to high temperature various diseases also occur.

4. Write true or false: শুদ্ধ বা অশুদ্ধ

a) Green house gases keep the world fit for living. – True.

b) The rise of temperature in earth causes change in climate. – True.

c) Trees for life is the name of a book. – False. 

d) Trees can protect earth from global warming. – True.

Grammar and Usage ব্যাকৰণ আৰু ব্যৱহাৰ

5. We have seven basic sentence patterns in English

ইংৰাজীত সাতটা মূল বাক্যৰ গঠন প্ৰণালী আছে।

i) SV : He plays

ii)SVO  : He plays chess

iii) SVC : He is a player

iv) SVOA : He won a prize in the competition

v) SVA : He is in the stadium

vi) SVOC : His victory made me proud

vii) SVOO :They gave him a trophy.


S = Subject

V = Verb

C = Complement

A = Adjunct or Adverbial

O = Object

6. Read the following sentence and identify the patterns in which they are written.

বাক্যৰ পদ্ধতিবোৰ চিনাক্ত কৰা—

a) He is an environmentalist

→ S V C        SVC

b) They keep the world fit.

→ S V O C     SVOC 

c) A Speaker delivers a speech in the morning

→ S V O A      SVOA

d) People use fuels

→ S V O          SVO

e) The teacher asked him a question

→ S V O O       SVOO

f) The girl dances

→ S V              SV

g) The players are in the field

→ S V A         SVA

7. Make a sentence in the pattern of each of the following:

উক্ত পদ্ধতিৰে বাক্য ৰচনা কৰা।


→ Raju saw a lion in the zoo.

ii) SVOO

→ I gave him a story book. 

iii) SVC

→ Mr. Khan is an actor 

iv) SVA

→ They came in the car. 

8. Use the right alternative and rewrite the sentences.

শুদ্ধ বাক্য ব্যৱহাৰ কৰি পুনৰ লিখা―

a) The (principal/ principle) aim of our NGO is to help the flood victims. 

→ The principal aim of our NGO is to help the flood victims.

b) The flood (affected/ effected) more than seven villages. 

→ The flood affected more than seven villages.

c) The (climate/weather) of Darjeeling is good for health. 

→ The weather of Darjeeling is good for health.

d) The girl is (feat / fit) for the post. 

→ The girl is fit for the post.

9. Fill in the blanks-

a) He has enrolled his name as a member of the organisation.

b) The price of gold is rising now a days. 

c) The use of solar energy in household works should be encouraged.

d) People should give importance on more plantation. 

10. Make sentences with aware, occur, unite, atmosphere, preserve বাক্য ৰচনা কৰা।

a) Aware – All of us should be aware of global warming. 

b) Occur – Various diseases occur due to earth’s high temperature. 

c) Unite – The whole world must unite to fight global warming. 

d) Atmosphere – We should plant trees to protect our atmosphere

e) Preserve-Trees help to protect and preserve nature. 

11. Write at least five sentences of each

কমেও পাঁচশাৰী বাক্য লিখা―

a) Green house gases

Gases like carbon monoxide, nitrous oxide, sulphur dioxide, methane etc. tuned out by industries and vehicles are together called green house gases (GHG). These gases keep the world fit for living. But due to air pollution and urbanisation these gases have increased in the atmosphere and formed a thick blanket like layer. This reflects the heat back to the earth thus increasing the temperature.

b) Global warming 

Global warming is the whole process by which the green house gases increases the temperature of the earth. Global warming has alarmingly changed the climates. Due to it, the melting of polar ice caps has increased the sea level thus flooding coastal areas and many islands including cities. Industrialisation and deforestation should be checked to stop global warming.

c) Environment

Environment is the natural surrounding world of us. It is the whole atmosphere covering land, water and air. A green, clean and pollution free environment is best for living. Trees protect and preserve nature in various ways. All should be alert and aware of the environmental issues and write to fight global warming.

12. Tell your friends about the influence of trees on environment.

Ans: Trees are the source of life. Trees produce oxygen in the atmosphere necessary for living beings. Trees make the environment nature rich. It keeps environment green and clean. It protects and preserve nature. Trees help in the survival and existence of various fauna and flora. Trees check pollution by inhaling Carbon dioxide and other poisonous gases. Without trees life is impossible. Global warming can be checked by tree plantations.

13. শেষত Basic sentence patterns ৰ বিষয়ে শিকো আহা English ত সাতটা Basic Sentence pattern আছে। ইয়াৰ দ্বাৰাই আমি বাক্য সমূহ ভিন্ন ধৰণে গঠন কৰিবলৈ শিকো। উদাহৰণেৰে সৈতে এই সমূহ হ’ল—

i) SV  → Raju sings.

ii) SVO  → Raju sings song.

iii) SVC  → Raju is a singer.

iv) SVOA  → Raju sang a song in the school.

v) SVA  → Raju is in home.

vi) SVOC  → Raju plays tabla also nicely.

vii) SVOO  → Teacher saw his prizes.

এনেদৰে তোমালোকে নিজেই বাক্য বনাবলৈ চেষ্টা কৰা।

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