Haryana State Board HBSE 7th Class Social Science Solutions Geography Chapter 1 Environment Textbook Exercise Questions and Answers.
Haryana Board 7th Class Social Science Solutions Geography Chapter 1 Environment
HBSE 7th Class Geography Environment Textbook Questions and Answers
Environment Questions and Answers HBSE 7th Class Question 1.
Answer the following questions:
(i) What is an ecosystem?
Answer:
An ecosystem is a system which is formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment in which they live. These are all linked by transfer of energy and material.
(ii) What do you mean by natural environment?
Answer:
Land, water, air, plants and animals comprise the natural environment.
(iii) What are the major components of the environment?
Answer:
The major components of the environment are:
- Natural Enyironhient
- Human Environment
- Humhn-made Environment.
Natural Environment : Natural environment refers to both the biotic and abiotic conditions which us existing on the earth.
Biotic refers to the living elements, e.g., plants and animals.
Abiotic refers to the non-living elements, e.g., rocks, air and water.
Human Environment : It reveals the activities, creations and interactions among human beings e.g., buildings, parks etc.
Human-made Environment: Human-made environment refers to the buildings, parks, bridges, rocks, industries which are made by humans.
(iv) Give four examples of human- made environment.
Answer:
Four examples of human-made environments are : Buildings, Parks, Bridges, Rocks.
(v) What is lithosphere?
Answer:
Lithosphere is the solid crust or hard top layer of the earth. It is made up of rocks and minerals and covered with a thin layer of soil.
(vi) What are the two major components of biotic environment?
Answer:
Plants and animals are the two major components of biotic enviornment.
(vii) What is biosphere?
Answer:
Plants and animals kingdom together make the biosphere. It is a narrow zone of the earth where the land, water and air interact with each other to support life.
Class 7th Geography Chapter 1 HBSE Question 2.
Tick the correct answers:
(i) Which is not d natural ecosystem?
(a) Desert
(b) Aquarium
(c) Forest
Answer:
(b) Aquarium
(ii) Which is not a component of human environment?
(a) Land
(b) Religion
(c) Community
Answer:
(a) Land
(iii) What is a human made environment?
(a) Mountain
(b) Sea
(c) Road
Answer:
(c) Road
(iv) Which is threat to environment?
(a) Growing plant
(b) Growing population
(c) Growing crops.
Answer:
(b) Growing population
Geography Chapter 1 Class 7 HBSE Question 3.
Match the following :
| (i) Biosphere | (a) blanket of air which surrounds the earth |
| (ii) Atmosphere | (b) domain of water |
| (iii) Hydrosphere | (c) our surroundings |
| (iv) Environment | (d) narrow zone where land, water and air interact |
Answer:
(i) (d)
(ii) (a)
(iii) (b)
(iv) (c)
Question 4.
Give Reasons:
(i) Man modifies his environment.
Answer:
Man modifies his environment to meet various needs. For example, he clears forests for obtaining land, for agriculture and for making shelter. He even extracts minerals from the earth for making various things. He construct dams for producing electricity. These are some of the ways in which man modifies his environment.
(ii) Plants and animals depend on each other.
Answer:
Animals whether they are carnivores or herbivores, ultimately depend on plants for their food. Also, plants provide fresh oxygen to animals to breathe in. These keep the environment clean and provide shelter to a number of animals. On the other hand, animals provide carbon dioxide which plants use for making their food. Dead and decaying matter of animals provide nutrients to plants to help them grow.
Intext Questions
Question 1.
Look at your surroundings. Make a list of uses that the land in your neighbourhood is being put to.
Answer:
- Roads
- Industries
- Diary Farming
- Bakery
- Schools
- Banks
- Residential Buildings
Question 2.
Where does the water you use in your homes and school come from? Make a list of different uses of water in our daily life. Have you seen anyone wasting water? How?
Answer:
The water that are provided in our houses and schools. It is for comes from Delhi Jal Board.
- Drinking
- Food preparation
- Bathing
- Cleaning house
- Washing clothes
- Industrial use
- Sanitation.
Yes, most of the people waste water. For example, they leave the tap open while soaping hands or brushing their teeth. They even leave tap opened when they are busy Somewhere.
ACTIVITY:
Imagine an ideal environment where you would love to live. Draw the picture of your ideal environment.
Answer:
An ideal environment where I would love to live, would comprise of
- Green plants and trees
- Pollution-free environment
- Clean roads
- Water availability
Students are expected to draw on their own.
HBSE 7th Class Geography Environment Important Questions and Answers
Very Short Answer Type Questions
Question 1.
What is an environment?
Answer:
All things (place, people, nature, etc.) that surround us together constitute our environment.
Question 2.
Why is our environment changing?
Answer:
Our environment is changing due to the global warming. This was caused due to pollution caused by the waste dumps, vehicles etc.
Question 3.
What are the two types of environment?
Answer:
The two types of enviomment are:
- Natural environment
- Human made environment.
Question 4.
What is meant by natural enviornment?
Answer:
All those things which are existing naturally around us are together called natural environment.
Short Answer Type Questions
Question 1.
Which two types of conditions make our natural environment? Give examples.
Answer:
The two types of conditions that constitute our natural environment are :
- Biotic conditions : All living organisms i.e. plants and animals.
- Abiotic conditions : All naturally existing non-living things e.g. water, air, soil, minerals, etc.
Question 2.
What do you mean by human environment?
Answer:
Human environment refers to all those activities, creatibns and interactions among human beings.
Question 3.
What are the components of environment?
Answer:
Following are the components of environment:
- Natural environment,
- Human-made environment,
- Activities and interactions of human beings.
Question 4.
Give examples of natural components of environment.
Answer:
Land (lithosphere), air (atmosphere), water (hydrosphere) and living things (biosphere) are examples of the natural components of environment.
Question 5.
Give examples of man-made components of environment.
Answer:
Buildings, parks, bridges, roads, industries, monuments, etc. are examples of man-made components of environment.
Long Answer Type Questions
Question 1.
Why should we protect our environment?
Answer:
We should protect our environment because:
- Environment is our basic life support system. It provides the air we breath, water to drink, the food to eat and the land to live.
- It provides us natural resources like wood, fuel and minerals.
- Many parts of environment have already been badly damaged by overuse resources like forests, pastures and farms.
- Most of the human activities affect the environment in one way or the other.
- If we continue to do so the damage will be irrepairable and the consequences will be very serious.
Question 2.
What are the different domains of the environment?
Answer:
The different domains of environment are:
- Lithosphere
- Atmosphere
- Hydrosphere
- Biosphere
(а) Lithosphere : The lithosphere is composed of rocks. The major components of rocks are minerals. Lithosphere even provides the foundation of terrestrial life where water and air are held close to the surface.
(b) Atmosphere : The earth has an oxygen consists of rich blanket of air around it. The atmosphere is a mixture of various gases such as oxygen, nitrogen, carbon dioxide, argon, neon etc. Atmosphere also continues to sustain life different forms.
(c) Hydrosphere : Oceans were the first cradle of life on earth. It refers to various water bodies such as rivers, lakes, seas, oceans etc. that exist on the earth.
(d) Biosphere : Biosphere or the living world is composed of plant and animal kingdom. It is a narrow zone of the earth where land, water and air interact with each other to support life.
Environment Class 7 HBSE Notes
- Environment: Environment is our basic life support system. The place, people, thing and nature that surround any living organism is called environment.
- Biotic : It refers to the world of living organisms, such as plants and animals.
- Abiotic : It refers to the world of non-living elements such as land.
- Lithosphere : Lithosphere is the solid crust or the hard top layers of the earth.
- Hydrosphere : It refers to the water bodies like rivers, lakes, seas, oceans etc. on the earth.
- Atmosphere : It is the thin layer of air that surrounds the earth.
- Ecosystem : It is a system formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment in which they live. These are all linked by transfer of energy and material.
- Barter System : A trade in which goods are exchanged without the use of money.