1) The document is a 7th grade geography lesson about the environment that includes pictorial activities and answers. 2) It defines the environment as the surroundings or conditions in which living things live, including biotic (living) and abiotic (non-living) components. 3) The natural environment has four main components - lithosphere, hydrosphere, atmosphere, and biosphere - which include land, water, air, and living things that interact in ecosystems.

1. CLASS -7TH
GEOGRAPHY
LESSON -1
WITH PICTORIAL ACTIVITIES and answers
https://youtu.be/VOMJdlEUPD0

2. The term environment has been
derived from a French word
“Environia” means to surround.
According to E. J. Ross “Environment
is an external force which influences
us.”
https://youtu.be/VOMJdlEUPD0 you may kindly watch it on
YouTube also

3. For examples, table, chair, school, car,
animals, parks, newspaper, mountains,
rivers, trees, clothes, books and so on.
Environment means the surroundings or
conditions in
which person, animal, or plant lives.
ALL THE THINGS SURROUNDING US IS KNOWN AS
ENVIRONMENT

5. ENVIRONMENT
BIOTIC- THAT IS LIVING
COMPONENTS
example- animal, human
beings
ABIOTIC – THAT IS NON-
LIVING COMPONENTS
example - soil , minerals ,
car
Natural Environment can be divided into following
components

6. COMPONENTS OF ENVIRONMENT

7. COMPONENTS OF INVIRONMENT
It has three components:-
[1] NATURAL ENVIRONMENT:-
Land, water, air, plants and animals comprise the natural
environment. we are familiar with the meaning of
lithosphere, hydrosphere, atmosphere and biosphere.
DID YOU KNOW? The World Environment Day is
celebrated on 5th of
June, every year.

8. Lithosphere [1] 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.
[2] 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.
[3] Lithosphere is the domain that provides us forests,
grasslands for grazing, land for agriculture and human
settlements. It is also a source of mineral wealth.

10. HYDROSPHERE - 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.

11. 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
vapor. The changes in the atmosphere produce
changes in the weather and climate.

12. TRU ST ME IN THE EXAM

14. BIOSPHERE- 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

15. In other words, an ecosystem is a chain of interaction
between organisms and their environment.
The term “Ecosystem” was first coined by A.G.Tansley, an
English botanist, in 1935
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.

16. HUMAN ENVIRONMENT
Human beings interact with the environment and modify
it according to their need. Early humans adapted
themselves to the natural surroundings. With time needs
grew THEY learn new ways to use . They learn to grow
crops, lead a settled life. surplus food was produced,
barter system emerged. Industrial revolution enabled
large scale production. Transportation
, Information communication easier and speedy across the
world. Barter System: It is a trade in which goods are exchanged without the use of
money.

18. https://youtu.be/VOMJdlEUPD0

19. [1] CAN YOU NAME THIS IMAGE…………… ? ANSWER- - - - - - - -

20. [2] Name the layers of the atmosphere, serially in the ascending order?

21. [3] CAN You name these dustbins to save the environment? First one
is done.

22. No.4

23. [ No. 5] -IDENTIFY THE ECOSYSTEM WITH THE HELP OF
GIVEN HINTS
[ MOUNTAINS, DESERTS, FORESTS, PONDS]
[1] Fish, water, lotus flower-----------------------------------
[2] Sand, Camel, Cactus ---------------------------------------
[3] Dense trees, wild animals, soil -----------------------------
[4] Coniferous trees, sheep, snow ----------------------------

24. No. 6- Write some examples of
Biotic :-PLANTS, ANIMALS ---------------,
---------------,-----------------------.
Abiotic :- Land ,--------------,-------------------,--
-----------------.

25. No.7 – Fill the box with the examples of your
surrounding:-
CAR, FAN --------, ---------, -
--------, ---------,
----------, -----------, -----------, ------
-----.
RIVER, MOUNTAIN ,
----------,------------,-------
-------.

26. [NO.8] IDENTIFY THE FOLOWING WATER BODIES
NAME-------------------- NAME --------------------
NAME ------------------- NAME ------------------

27. EXERCISES
Q(iv). Give four examples of human made environment ?
Answer. Bridges, Parks, Road, Buildings, etc are example of human-made environment.
Q(v). Question. What is lithosphere?
Answer. Lithosphere is the hard top layer of the earth.
Q(vi). Whish are the two major components of biotic environment?
Answer. Plants and animals are two major components of biotic environment.
Q(vii) Question What is biosphere?
Answer.. Biosphere it is the narrow zone of the earth where land, water and air support life by interacting with
each other is called biosphere.
Question 2. Tick the correct answer.
Q(i) Which is not a natural environment.
(a) Desert. (b) Aquarium. (c) Forest.
Answer. (b) Aquarium.
Q(ii) Which is not a component of human environment.
(a) Land. (b) Religion. (c) Community.
Answer.(a) Land.
Q(iii) Which is a human made environment.
(a)Mountain. (b) Sea. (c) Road.
Answer. (c) Road.

28. EXERCISES
Q(iv) Which is a threat to environment.
(a) Growing plant.
(b) Growing population.
(c) Growing crops.
Answer. (b) Growing population.
Question 3. Match the following.
1 Biosphere. (a) blanket of air which surrounds the earth.
2 Atmosphere. (b) domain of water.
3 Hydrosphere. (c) our surrounds.
4 Environment. (d) narrow zone where land, water and air interact.
Answer. Matched pair with correct answer :
1 Biosphere. (d) narrow zone where land, water and air interact.
2 Atmosphere. (a) blanket of air which surrounds the earth..
3 Hydrosphere. (b) domain of water.
4 Environment. (c) our surrounds.

29. Question 4. Give reasons:
(i) Man modifies his environment?
Answer. Man modifies his environment to meet his various needs. For example,
he clears forests for obtaining land for agriculture and for making shelter.
He extracts minerals from the earth for making various things. He makes dams for
producing electricity. These ae a few of the ways in which man modifies his
environment.
(ii) Plants and animals depend on each other.
Answer. Animals, whether carnivores or herbivores, ultimately depend on plants
for their food. Also,plants provide fresh oxygen to animals to breath 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 animals provide nutrients or plants to help them grow.

30. Q3. Write the significance of atmosphere.
Ans. It protects us from the harmful rays and scorching heat of the sun.
Q4. What do you mean by barter system?
Ans. It is a trade in which goods are exchanged without the use of money.
Q5. What is hydrosphere?
Ans. The domain of water is referred to as hydrosphere.
Q6. What hydrosphere comprises of?
Ans. It comprises various sources of water and different types of water
bodies like rivers, lakes, seas, oceans, etc.

31. EXERCISES
Q7. Which are the two major components of biotic environment?
Ans. Plants and animals are the two major components of biotic
environment.
Q8. Name the basic component of natural environment?
Ans. Air, water, land and living beings are the basic component of
natural environment.
Q9. Why is hydrosphere important?
Ans. The hydrosphere is important because it comprises water, which
sustains a variety of life forms.
Q10. Give four examples of human made environment.
Ans. Examples of human made environment are parks, buildings,
bridges, roads, industries, monuments etc.

32. Q11. What do you mean by natural environment?
Ans. Natural environment comprises of land, water, air, plants and
animals. Thus, natural environment refers to both biotic and abiotic
conditions existing on the earth.
Q12. Why is lithosphere important?
Ans. Lithosphere is important because it provides us forests,
grasslands for grazing, land for agriculture and human settlements. It
is also a source of mineral wealth.
Q13. What is environment?
Ans. The place, people, things and nature that surround any living
organism is called environment. It is a combination of natural and
human made phenomena.

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