Table of Contents:
Chapter 1: Environment
1.
What is an ecosystem?
2.
What do you mean by natural environment?
3.
Which are the major components of the environment?
4.
Give four examples of human-made environments.
5.
What is lithosphere?
6.
Which are the two major components of the biotic environment?
7.
What is a biosphere?
8.
Give reasons, Man modifies his environment.
9.
Give reasons, Plants and animals depend on each other.
Chapter 2: Inside Our Earth
1.
What are the three layers of the earth?
2.
What is a rock?
3.
Name three types of rocks.
4.
How are extrusive and intrusive rocks formed?
5.
What do you mean by a rock cycle?
6.
What are the uses of rocks?
7.
What are metamorphic rocks?
8.
Give reasons, we cannot go to the center of the earth.
9.
Give reasons, why sedimentary rocks are formed from sediments.
10.
Give reasons, limestone is changed into marble.
Chapter 3: Our Changing Earth
1.
Find out the names of a few rivers of the world that form a delta.
2.
Why do the plates move?
3.
What are exogenic and endogenic forces?
4.
What is erosion?
5.
How are floodplains formed?
6.
What are sand dunes?
7.
How are beaches formed?
8.
What are oxbow lakes?
9.
Give reasons, some rocks have the shape of a mushroom.
10.
Give reasons, Flood plains are very fertile.
11.
Give reasons, Sea caves are turned into stacks.
12.
Give reasons, Buildings collapse due to earthquakes.
Chapter 4: Air
1.
What is the atmosphere?
2.
Which two gases make up the bulk of the atmosphere?
3.
Which gas creates a greenhouse effect in the atmosphere?
4.
What is the weather?
5.
Name three types of rainfall?
6.
What is air pressure?
7.
Give reasons, why do wet clothes take a longer time to dry on a humid day?
8.
Give reasons, why do amount of insolation decreases from the equator towards the poles?
Chapter 5: Water
1. Why is water important to us?
2. Suggest some ways in which water can be conserved ( a) in your home (b) in your school.
3.
What is precipitation?
4.
What is the water cycle?
5.
What are the factors affecting the height of the waves?
6.
Which factors affect the movement of ocean water?
7.
What are tides and how are they caused?
8.
What are ocean currents?
9.
Give reasons why Ocean water is salty?
10.
Give reasons why the quality of water is deteriorating.
Chapter 6: Natural Vegetation and Wildlife
1.
Which are the two factors on which the growth of vegetation mostly depends?
2.
Which are the three broad categories of natural vegetation?
3.
Name the two hardwood trees commonly found in tropical evergreen forests.
4.
In which part of the world is tropical deciduous forests found?
5.
In which climatic conditions are citrus fruits cultivated?
6.
Mention the uses of coniferous forests.
7.
In which part of the world is seasonal grassland found?
8.
Give reasons, why the animals in the polar region have thick fur and thick skin.
9.
Give reasons, why tropical deciduous trees shed their leaves in the dry season.
10.
Give reasons, why the type and thickness of vegetation changes from place to place.
Chapter 7: Human Environment–Settlement, Transport, and Communication
1.
What are the four means of transport?
2.
What do you understand by the term ‘settlement’?
3.
What are the activities practiced by the rural people?
4.
Mention any two merits of railways.
5.
What do you understand by communication?
6. What is mass media?
7.
Give reasons, why today’s world is shrinking.
Chapter 8: Human-Environment Interactions The Tropical and the Subtropical Region
1.
Name the continent in which the Amazon Basin is located.
2.
What are the crops grown by the people of the Amazon Basin?
3.
Name the birds that you are likely to find in the rainforests of the Amazon.
4.
What are the major cities located on the River Ganga?
5.
Where are the one-horned rhinoceros found?
6.
Give reasons, why the rainforests are depleting?
7.
Give reasons, why paddy is grown in the Ganga-Brahmaputra plains?
8.
On an outline map of the Indian Sub-continent, draw the rivers Ganga and Brahmaputra from the source to the mouth. Also, show the important tributaries of both rivers.
9.
On the political map of South America, draw the equator. Mark the countries through which the equator passes.
Chapter 9: Life in the Deserts
1.
What are the two types of deserts found in the world?
2.
In which continent is the Sahara desert located?
3.
What are the climatic conditions of the Ladakh desert?
4.
What mainly attracts tourists to Ladakh?
5.
What type of clothes do the people of the Sahara desert wear?
6.
Name the trees that grow in Ladakh.
7.
Give reasons, why there is scanty vegetation in the deserts?
8.
Give reasons, why people of the Sahara desert wear heavy robes?
9.
On the outline map of Africa, mark the Sahara desert and any four countries around it.
10.
On the outline map of India, mark the Karakoram Range, Zanskar Range, Ladakh, and Zoji La pass.
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