RBSE Class 7 Social Science Important Questions Geography Chapter 1 Environment

Rajasthan Board RBSE Class 7 Social Science Important Questions Geography Chapter 1 Environment Important Questions and Answers. 

RBSE Class 7 Social Science Important Questions Geography Chapter 1 Environment

Multiple Choice Questions

Question 1. 
Which object is created by nature?
(a) Cars 
(b) Mountains
(c) Roads 
(d) Houses
Answer: 
(b) Mountains

Question 2. 
Which are the components of environ-ment?
(a) Natural 
(b) Human made
(c) Humans 
(d) All of them
Answer: 
(d) All of them

 

Question 3. 
Solid crust or the hard top layer of the earth is called as:
(a) Atmosphere 
(b) Lithosphere
(c) Biosphere 
(d) Hydrosphere
Answer: 
(b) Lithosphere

Question 4. 
Water domain is referred to as:
(a) River 
(b Hydrosphere 
(c) Well
(d) Oceans 
Answer: 
(b Hydrosphere 

Question 5.
A system formed by the interaction of all living organisms with each other is called as:
(a) Barter system
(b) Ecosystem
(c) Environment
(d) Human system 
Answer: 
(b) Ecosystem

Fill in the blanks 

Question 1. 
Environment is our basic ............... support system. 
Answer:
life,

Question 2. 
Environment provides us, the ............... we breath, the ............... we drink.
Answer:
air, water

Question 3. 
Environments is derived from a french word  ...............
Answer:
environer/ environner,

Question 4. 
Domains of the natural environment are............... ............... ............... and ............... 
Answer:
atmosphere, lithosphere, biosphere, hydrosphere,

Question 5. 
All............... ............... and ............... depend on their immediate surroundings. 
Answer:
 plants, animals, human beings.

True/False

Question 1. 
Landforms are found only over continents.
Answer:
False

Question 2. 
Trade in which goods are exchanged without the use of money is called barter system.
Answer:
True

Question 3.
Gravitational force of the earth holds the atmosphere around it.
Answer:
True

Question 4. 
No life can exist in biosphere.
Answer:
False

Question 5. 
Abiotic environment consists of living organism.
Answer:
False

Match the following

Column A	Column B
1. Environment	(a) Plants
2. Biotic	(b) Air, Water
3. Abiotic	(c) Gravitational Force
4. Atmosphere	(d) Depend on immediate surroundings
5. Natural Environment	(e) Soil, Temperature
6. Ecosystem	(f) Fungi, Bacteria

Answer: 

Column A	Column B
1. Environment	(b) Air, Water
2. Biotic	(f) Fungi, Bacteria
3. Abiotic	(e) Soil, Temperature
4. Atmosphere	(c) Gravitational Force
5. Natural Environment	(a) Plants
6. Ecosystem	(d) Depend on immediate surroundings

Very Short Answer Type Questions

Question 1. 
When is environment day celebrated?
Answer: 
5th June. 
 
Question 2. 
Which revolution made communication easier and speedy across the world?
Answer: 
Information technology revolution.

Question 3. 
What are the names of natural environment conditions that exist on the earth?
Answer: 
Biotic and abiotic.

Question 4. 
Name the component which holds the atmosphere on the earth?
Answer: 
Gravitational force holds the atmosphere on the earth.

Question 5. 
Name the three major components of our environment which are together termed as biosphere.
Answer: 

1. Lithosphere, 
2. Atmosphere,
3. Hydrosphere.

Question 6.
Name the four domains of the earth.
Answer: 
The four domains of the earth are: Atmosphere, Lithosphere, Biosphere and Hydrosphere.

Question 7. 
Write the significance of atmosphere.
Answer: 
It protects us from the harmful rays and scorching heat of the sun.

Short Answer Type Questions

Question 1. 
What is environment? How is environment important to us? Also define Human environment.
Answer: 
Environment refers to the surroundings in which we live. Environment is important to us because it provides us the air we breathe, the water we drink, the food we eat and the land where we live. Human environment is concerned with people who live in different, environments, their activities and the environmental features which they have created.

Question 2. 
What changes occur in interaction between humans and their surroundings? 
Answer: 
There are many direct and indirect effects of human actions on ecosystem. The link between human, action and the environment is complex and varied, but can be grouped into two main types of activities like:

1. Use of natural resources such as land, food, water, soils, minerals, plants and animals.
2. Production of wastes from a range of activities including agriculture, industry and mining, as well as wastes from our own bodies pollute the environment.
3. Many times the interaction is positive also. Like human beings give out C02, which is used by plants and trees to make their food during the process of photosynthesis.

Question 3. 
How can we protect our environment? Why should we protect our environment?
Answer: 
We can protect our environment by not misusing the nature’s gift. For example, by growing more plants and trees, limit our use of electricity and water, etc. Also by keeping our surroundings clean and not polluting our natural resources. We should protect our environment to make the world a better place to live for ourselves, animals and for future generations.

Long Answer Type Questions

Question 1. 
Write a detailed note about the natural domains of the environment.
Answer: 
The environment is everything around us wherever we are: at home, at work, or outdoors. It includes, among other things, the air we breathe, the water we drink and use, and the food we eat. The area near the surface of the earth can be divided into four interconnected spheres: lithosphere, hydrosphere, biosphere, and atmosphere.
(A) Lithosphere:
The solid portion of the earth is called lithosphere. It is composed of rocks of the earth’s crust. There is a thin layer of sdil on the top. The soil contains mineral and nutrients which sustain various organisms.' Land forms are. part of lithosphere.

(B) Hydrosphere: 
The hydrosphere is composed of water. Water is available in all three states on the earth. About two-thirds of the earth’s surface is covered with water.

(C) Atmosphere: 
The thick envelope of air surrounding earth is called atmosphere. The atmosphere is about 1600 km thick and is composed of various gases.

(D) Biosphere: 
The narrow zone of contact between the lithosphere, hydrosphere and atmosphere is called biosphere. Life exists in this zone. A variety Jof organisms exists on earth. All