EVENTS CONVENT HIGH SCHOOL
11/08/2021
CLASS-7 SESSION2021-22(SLOT-1)
Social
science(geography)
Chapter-1
environment
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Question 1.Answer the following questions briefly.
Ans.All plants, animals
and human beings depend on their immediate surroundings. They are also
interdependent on each other. This relation between the living organisms as
well as the relation between the organism and their surroundings form an
ecosystem.
2.What do you mean by the natural environment?
Ans.The natural
environment consists of land, water, air, plants and animals. Thus, the natural
environment refers to both biotic (plants and animals) and abiotic (land)
conditions that exist on the earth.
3.Which are the major components of the environment?
Ans.The major
components of the environment are—natural (land, air, water, living things),
human-made (buildings, parks, bridges, roads, industries, monuments, etc.), and
humans (individual, family, community, religion, educational, economic, etc).
4.Give four examples of a human-made environment.
Ans.Four examples of
human-made environments—buildings, parks, bridges, and roads.
5.What is the lithosphere?
Ans.The 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.
6.Which are the two major components of the biotic environment?
AnsPlants and animals
are the two major components of a biotic environment,
7.What is the biosphere?
Ans.The biosphere is a
narrow zone of the earth where land, water, and air interact with each other to
support life. Thus, plant and animal kingdom together make biosphere, ie., the
living world.
Question 2.Tick the correct answer.
1.Which is not a natural
ecosystem?
(a) Desert
(b) Aquarium(√)
(c) Forest.
2.Which is not a component
of the human environment?
(a) Land(√)
(b) Religion
(c) Community.
3.Which is a human-made
environment?
(a) Mountain
(b) Sea
(c) Road. (√)
4.Which is a threat to the
environment?
(a) Growing plant
(b) Growing population(√)
(c) Growing crops.
Question 3. Match the following:
1.
Biosphere (a) the narrow zone where land, water, and air
interact
2.
Atmosphere (b)
blanket of air which surrounds the earth
3.
Hydrosphere (c)
domain of water gravitational
4.
Environment (d)
our surroundings
Question 4.Give reasons:Man modifies his
environment
Plants and animals depend on each other.
1.Man modifies his environment in the following ways:
He cuts forests and clears
land for agriculture, industries, and habitation.
He tills land for
agriculture.
He uses the land to build
buildings, roads, and railways.
He uses water.
He uses air for his
survival.
He sets up industries,
factories, etc.
He does numerous other
activities for his life, making it comfortable.
2.Plants and animals depend on each other in the following ways:
Plants provide food to
animals.
They, in the form of
forests, provide shelter to wildlife.
Wildlife adds beauty to
the forests.
Animals provide manure to
plants for growth.
Animals also provide
beauty to forests.
Dead animals also provide
humus content.
