Lesson -2 CONSERVATION OF NATURAL RESOURCES (In terms of Air, Water etc.)
‘Make efforts to protect
the resources of nature; this is the true religion of all humanity’.
Objectives 1. The future of human life lies in the
conservation of natural resources.
2. Man is not the owner
of nature but nature is the guardian of man.
3. Conservation of
natural resources is more beneficial to man than nature.
Human life is considered to be based
on five elements and these five elements are directly or indirectly related to
nature. Obviously, the existence and future of a human being created with
natural elements depends on the conservation of nature. The eternity of life
also runs parallel to the eternity of the natural aspects. Considering this
aspect, it is important to note that conservation of natural resources is, in fact,
more of conservation of human beings than the conservation of nature.
Therefore, in this era of population explosion, conservation of nature and its
resources becomes the first and foremost task of a human being.
Students should discuss with the help
of their teacher about the elements of human life and consider what the five
basic elements are. Besides this, thee students will be made to consider the
following situations and identify the correct response from the options/ answer
the questions given thereafter so0 that they can introspect to what extent they
interact with nature
Activity-1
1. If you see water
gushing out from a government tap by the side of the road in a crowded market,
out of the four responses given below, tick the response which, according to you,
is the most appropriate:
·
Ignore and move on as
our clothes and shoes may get wet.
·
Turn off the tap
immediately, even if our clothes get wet.
·
Not pay attention
because it is the duty of the government.
·
Turn it off only if
someone asks you to do so.
2. Firecrackers are
commonly used by the Punjabis on all kinds of festivals and happy occasions
like weddings, and this causes a lot of damage to the natural elements in the
form of pollution. To find out to what extent our students are alert, discuss
the following questions and note down the responses.
·
How many students in
your class have never burst crackers?
…………………………………………………………………………………………………………………………
·
How many students in
your class have set off firecrackers by imitating others or at the behest of
someone?
………………………………………………………………………………………………………………………..
·
How many students of
your class waste money on firecrackers enthusiastically?
…………………………………………………………………………………………………………………………
Nature has given us forests,
mountains, rivers, food, drinks and many more such useful things. Humans, for
their own comfort and convenience, have cut down forests, demolished the
mountains, diverted the natural course of rivers and streams, released carbon- dioxide
into the atmosphere with smoke and fires from industrial chimneys, released
toxic substances like chloro- fluorocarbons into the air, thus disturbing the
natural balance and depleted the ozor layer that protects the environment. Hence,
the Sun's ultraviolet rays have had a devastating effect on animals and humans.
Greenhouse gases have increased the average atmospheric temperature. This is
known as Global Warming.
Therefore, it estimated that in the
near future, the natural mountain snow will also melt. Underground water is
being used indiscriminately thus disturbing the earth's internal balance. The
chemical effluents from the factories have mixed with the water flowing on the
earth. Thus, the water resources are in a very bad condition. Besides air,
water and land pollution, noise pollution has become a major headache. It is
the responsibility of our society and the students to take care of the precious
gifts bestowed on us by nature.
In order to make the students
understand the thought process involved and the steps taken beyond just
worrying about this aspect, they will be made to participate in a
question-answer session under the guidance of the teacher. The whole class will
work on the following worksheet while listening carefully to the responses
Worksheet
Q.1. What efforts can
be made to improve the groundwater contamination? Students will have to write
their own ideas.
Ans……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.2. What measures
should be taken to prevent water contamination? What contribution can you make
and how?
Ans……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.3. What contribution
are you making to reduce air pollution and how?
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.4. Trees are being
cut down indiscriminately. How many and where have you planted trees so far and
what efforts have you made to take care of them? Share your ideas.
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Activity-2
1. During the morning
assembly, every student of eleventh class should be given two minutes to go to
each class and switch off the fans and lights and then return to the assembly.
The student who switches off the most number of fans and lights should be
acclaimed. Rather all the students ought to be applauded by the rest of the
students when they return after switching off the fans and lights.
2. Likewise, students
should be given opportunities to see to it that the running water taps are turned
off, the flowers and plants planted in the school are watered and the soil
around the plants are turned/plowed regularly etc., so that they become
accustomed to these sort of works.
SAVE
ELECTRICITY
Objectives 1. To make the students aware of non-renewable natural
resources.
2. Motivate the
students to save electricity by reducing power consumption.
3. Consider saving
household resources as a part of social savings.
Saving electricity is, in fact, a way
of conserving many non-renewable resources of nature (such as coal). Thus,
saving electricity is similar to saving natural resources like coal and water. This
message is conveyed to the students in the following poem which can be read and
understood under the guidance of the teacher. After this, the students will
also have to work on the given worksheet.
Activity 1: Poem
Buildings decorated with lights,
The meter running speedily,
Don't use electricity unnecessarily.
If the meter runs fast,
The burden on the pocket will
increase,
And then your nose, you will turn up.
Those who live in slums,
Live life without electricity
Always enduring darkness.
Use electricity as much as you need,
Imitate no one please,
You blessed ones.
Use LED light bulbs.
Save electricity
And save money.
-Harmesh Kaur Jodhey (Poetess)
Worksheet
Q.1. Which light bulbs
should be installed so as to save electricity?
Ans………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
Q.2. What will happen
if we use much electricity?
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.3. Why is the
electric bill higher nowadays?
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.4. Is it advisable to
turn on all the lights at night in order to beautify your building?
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.5. What are the
disadvantages of overuse of electricity?
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Activity-2
Certain activities related to saving
electricity and other natural resources should be assigned to the students
during the half-day break or any such time when the students can perform the
activities under the guidance of the teacher. Other methods of saving natural resources
will also be discussed in the period of this subject but prior to this, some
activities related to this methods need to be carried out.
Say Yes or No:
1. Will you turn off
the lights before leaving your class?
2. Will you leave your
computer running?
3. There are no
students in the class next to yours but the fans are on. Will you switch off
the fans of that class?
4. The school water
tank has overflowed and water is flowing out. Will you rush to switch off the motor?
Activity-3
Under the guidance of the teacher, the students will light a 100 watt ordinary bulb, a 16 watt LED bulb and a 12 watt solar lamp in the class and then compare and discuss the points given in the table below in terms of power saving.
|
Sr.
No. |
Ordinary
Bulb |
LED
Bulb |
Solar
Lamp |
|
1 |
100
watt |
16
watt |
12
watt |
|
2 |
High
power comsumption |
Low
power comsumption |
No
power consumption, uses solar energy |
|
3 |
Emits
less light |
Emits
more light |
Emits
more light |
|
4 |
More
expenditure |
Less
expenditure |
Less
expenditure |
Worksheet
Q.1. What kind of
lights would you use to save electricity?
Ans……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.2. Will you prefer
light bulbs that emit more light with low power consumption?
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.3. State vividly the
difference between a 100 watt ordinary bulb and a 16 watt LED bulb.
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.4. What appliances
can run on solar power?
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Q.5. Solar-powered
products help to save electricity as well as coal. Do you agree with this Statement?
Ans.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
Under the guidance of the teacher, all the students of
the class will discuss about conservation of electricity and other natural
resources in the school and in their own homes as mentioned below:
Teacher: Students, our school is going to conduct Annual Day celebrations. Should
we decorate our school with strings of light bulbs or use some other artistic
way to present ourselves? Also some of you students will state what all you do
and what all you think of doing to save electricity in your homes.
Student 1: Sir, we should all gather in the same room to watch television.
Student 2: We should iron the dresses of all the family members at the same time so
that more power is not consumed by ironing at different times of the day.
Student 3: We should install solar energy plants on the roofs of our houses.
Student 4: We should install AC with inverter
Student 5: Solar lights should be installed in the streets.
Teacher: Well done, kids! You all are very wise. Many of you might be associated
with agriculture. You can save a lot of electricity if you plant crops that consume
less water.
Worksheet
A. Put a tick (√) against correct statements and a cross (X) against incorrect
statements:
1. We will decorate our
whole school with strings of lights.
2. Installation of
solar power plants can save electricity.
3. Lights, fans and
plugs should be switched off during the stage programmes.
4 Turn off the power
switch after turning off the computer.
5. Heater in winter and
A.C. in summer should not be used.
6. Waste water from
taps should be drained into the kitchen garden and lawns in order to save water
and electricity.
7.
Match properly:
|
1.
With LED bulbs…….. |
(a)
there is no burden on the pocket. |
|
2.
Everyone in the family should sit together and watch…… |
(b)
should be drained into the lawn. |
|
3.
With power saving.... |
(c)
electricity is conserved. |
|
4.
Waste water from taps….. |
(d)
television. |
