NCERT Solutions for Class 7 Social Science Geography Chapter 1

NCERT Solutions for Class 7 Social Science Geography Chapter 1 Environment in English Medium अध्याय 1: पर्यावरण in Hindi Medium free to View online or download in PDF format for academic session 2020-21 based on latest NCERT Books.

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NCERT Solutions for Class 7 Social Science Geography Chapter 1

Class: 7Social Science (Geography)
Contents:English and Hindi Medium Solutions
Chapter 1:Environment




Class 7 Geography Chapter 1 Question Answers

CBSE NCERT Solutions for Class 7 Social Science Geography Chapter 1 Environment in English and Hindi Medium is given here updated for session 2020-2021. Download these solutions for offline use or use as it is, without downloading online.

Important Notes on 7th Geography Chapter 1

The place, people, things and nature that surround any living organism is called environment. It is a combination of natural and human made phenomena. While the natural environment refers to both biotic and abiotic conditions existing on the earth, human environment reveals the activities, creations and interactions among human beings.
The domain of water is referred to as hydrosphere. It comprises various sources of water and different types of water bodies like rivers, lakes, seas, oceans, etc. It is essential for all living organisms.
Lithosphere is the solid crust or the hard top layer of the earth. It is made up of rocks and minerals and covered by a thin layer of soil. It is an irregular surface with various landforms such as mountains, plateaus, plains, valleys, etc.
Landforms are found over the continents and also on the ocean floors.
The atmosphere is the thin layer of air that surrounds the earth. The gravitational force of the earth holds the atmosphere around it. It protects us from the harmful rays and scorching heat of the sun. It consists of a number of gases, dust and water vapour. The changes in the atmosphere produce changes in the weather and climate.
Plant and animal kingdom together make biosphere or the living world. It is a narrow zone of the earth where land, water and air interact with each other to support life.
All plants, animals and human beings depend on their immediate surroundings. Often they are also interdependent on each other. This relation between the living organisms, as well as the relation between the organisms and their surroundings form an ecosystem. There could be an ecosystem of large rain forest, grassland, desert, mountains, lake, river, ocean and even a small pond.



Class 7 Social Science – Geography Chapter 1 – Important Questions

What is an ecosystem?
Ecosystem is the system formed by the interaction of all living things with one another and with the physical and chemical factors of the environment in which they live linked by transfer of energy and material.
What do you mean by natural environment?
By natural environment we mean the surroundings created by the nature. It comprises of the objects such as – mountains, plateaus, plains, valleys, forests, land, air, river, ocean, water and all living and non-living things etc.
Which are the major components of the environment?
Major components of the environment include –
Natural Components like, Land (Lithosphere), Water (Hydrosphere), Air (Atmosphere), Living things (Organism).
Human made Components like, buildings, parks, bridge, road, industries etc.
Humans like, individuals, family, community, religion, politics, education etc.
Give four examples of human made environment.
Examples of human made environment are like,
buildings,
parks,
bridge,
road,
industries etc.
What is lithosphere?
Lithosphere is the hard top layer of the earth or crust consisting of rocks and minerals extending both over the continents and ocean basins.
Which are the two major components of biotic environment?
The two basic components of biotic environment are Plants and Animals.
What is biosphere?
Biosphere: Plants and animals found in the narrow strip at the junction of lithosphere, atmosphere and hydrosphere together make biosphere.
Why has man modify his environment?
It is true that man modifies his environment. It is because –
He uses water.
Deforestation by which he clears land for agriculture, industries and habitation.
He tills land for agriculture.
He uses air.
Numerous activities made to make the life comfortable.
How do plants and animals depend on each other?
The interdependence of plants and animals can be illustrated by the following points:
Plants provide food to animals.
Forests provide shelter to wild life.
Wildlife adds beauty to forests.
Animal dung provides manure for the growth of plants.
The decay of dead animals provides nutrition to soil which in turn helps in the growth of plants and trees.
NCERT Solutions for Class 7 Social Science Geography Chapter 1 Environment.
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