Coal & petroleum - Biology Management of Natural resources, Science, Class 10 Video Lecture

let us look at the next important
resource that is cooler than petroleum
we have however discussed about coal and
petroleum in quite detail in our last
lesson why we were talking about fossil
fuels we will again quickly see the ways
of managing overland petroleum so let us
quickly look at the fossil fuels coal
and petroleum so coal and petroleum are
fossil fuels while at the core and
fossil fields I don't think I need to
explain all these things again because I
have already discussed in detail about
all the stuff still a quick review for
you because they are formed by remains
of dead plants and animals and how how
is coal or petroleum formed and talked
about that that process however we have
talked talked about it before these are
important sources of energy because when
you burn coal you get huge amount of
energy and that energy is useful for
many different purposes like generation
of electricity or networking purposes
they are used for domestic purposes they
are also used in thermal power plant so
how are the fossil fuels formed they
were formed during the Carboniferous
period
what was the Carboniferous period it was
a period long long back some 360 million
years of course you can imagine how old
it is so it is somewhere around the
period where when the dinosaurs exist
and things like that so it was quite
Carboniferous period because of the
presence of carbon in that period so
cool it is nothing but the main
constituent of coal is carbon and it is
since carbon is the main constituent
that is why when we burn coal a lot of
energy is emitted so what happened in
during the Carboniferous period the
trees and clams which died they sank to
the bottom of the oceans okay then in
due course of time they formed a layer
of spongy material called peat so the
dead remains of trees and clams which
went to the bottom this formed a spongy
material called peat this Beach got
covered with sand and clay with passage
of time the passage of a more and more
sand and more and more clay got
deposited over the pea
as a result the beat got squeezed and
released water now after releasing water
the squeezed peat gradually formed ol
oil or natural gas now do you think that
this process was very simple and quick
it was not like that it took several
hundreds and thousands of year to form
coal oil or natural gas right so this
was basically how fossil fuels are
formed and that is why they are known as
fossil fuels because they were formed by
the remains of dead plants and animals
now what are the disadvantages with
fossil fuels we already know the
advantages right they play any huge
amount of energy and that energy is used
oil is used for many different purposes
but what are the disadvantages involved
the first one is air pollution the
amount of smoke which is released on
burning coal is too much it pollutes the
air it pollutes the atmosphere acid rain
what is acid rain because of the the
products which are emitted on burning
the fossil fuels when you burn fossil
fuels things like carbon oxides oxides
of carbon oxides of nitrogen and sulfur
are produced and these things are acidic
oxides and what they do when these
things are emitted in the atmosphere
during rainfall they combine with the
rain and the rain is known as acid rain
this acid rain is extremely harmful not
only to the life forms but it also has
many other disadvantages like it
tarnishes the marbles which tarnish its
buildings so acid rain is something
which is hazardous and is it causes
different types of diseases in Latin in
different life forms the greenhouse
effect
what does greenhouse effect I have
spoken about greenhouse effect in detail
in our previous lesson greenhouse effect
is something like the greenhouse gases
like carbon dioxide methane so what are
these greenhouse gases these are the
gases which traps the energy from the
sunlight within the atmosphere and as a
result the more and more greenhouse
gases
have the more and more heat will be
trapped in the atmosphere and the more
hotter the atmosphere will become now
burning these fossil fuels produces
these greenhouse gases like carbon
dioxide and methane so it increases the
amount of greenhouse gases in that most
air and as a result it causes global
warming and it warms the atmosphere
right so these are some of the major
disadvantages with fossil fuels and we
see the major disadvantage is that if it
point it harms the atmosphere in one or
the other way either by air pollution or
by acid rain or by greenhouse effect
whatever it is it is actually harming
the atmosphere right so the usage of
course influence has alarming
environmental consequences so what is
the conclusion the conclusion is that
coal and petroleum should be used
judiciously so that they are left for
our future generation because that man
cages are obviously there by burning
coal and petroleum you get so much of
energy that is harnessed for electricity
generation and oil and we need
electricity in huge amounts right so we
should make use of coolant petroleum but
we should not use oil and petroleum to a
very large extent so that the advantage
which we are getting will get
compensated by the disadvantage that
means on one side we will generate
electricity on the other side we will
call you that most fear to such extent
that existence of life-forms will become
difficult so when life will no I mean if
life only doesn't exist there exist on
the planet then what will you do by
generating electricity right make sense
so we should use coal and petroleum
judiciously so that the atmosphere is
not completely destroyed at the same
time so that this goal in petroleum are
left for our future generation also to
use because again coal and petroleum
czar also in limited amount right every
day you are not getting huge tons and
tons of coal and petroleum so you have
limited stock but you have unlimited
needs so
should make use of it judiciously so
that it is left for our future
generation and also you do not believe
that was fair and this is the thing so
let us learn bye bye now we have almost
covered the management of the most
important natural resources now when I
talk of judicious use of it resources or
judicial use of natural resources
sometimes I mean small small things
which we can do in our day-to-day like I
mean how can we contribute to management
of natural resources
we can contribute in so many different
ways for example we can prefer stairs
over lifts suppose if we have to go to
now in case you have to go to the 18th
floor of a building in that case it is
difficult to use stairs so in that case
you you are most welcome to use lifts
but let us suppose if you want to go to
the first floor second floor many of the
times people become too lazy to walk
even one or two floors and they use
lifts
so anyway use lifts you are actually the
lift is nothing but an electronic
apparatus so you are actually you can
use electrical energy and wasting that
energy correct so he can prefer stairs
over lift we can prefer tube lights over
bulbs because bulbs consume more power
so again you are wasting more
electricity there so instead of you
because all we need is light so we get
light from tube light as well
City Light is something which will need
which will consume less power so we can
prefer tube lights over bulbs pay for
cycling over bus bus will consume so
much of fuel but if you cycle the first
thing is you remain hildie cycling is
good for health
you remain fit and fine and at the same
time you save that amount of fuel prefer
bus over car now let us suppose I mean
cycling doesn't solve the purpose every
time now let us suppose if you have to
travel some 30 kilometers
you cannot cycle for 30 40 or 50
kilometers right that becomes strainers
so in that case you can again prefer bus
over card because bus will utilize some
amount of fuel but at the same time it
will carry some 50 passengers but card
will utilize almost the same amount of
and it will carry just one passenger
right so it is always preferred to use
bus over card
same energy while commuting to your
school or your office you you can all
this pressure carpooling let us suppose
there are six of you staying in the same
locality and you are all going to the
same school instead of the fact that all
of who you go by your own car it is
better than you just all of you the six
of you go in the same car so at least
you save the fuel of the remaining five
cars so these are some of the ways these
are some of the small efforts which when
taken together by everyone helps us to
save a lot of energy I mean by maybe
bicycling a one kilometer and saving a
very small amount of fuel but if that
practice is followed by every person
altogether we are saving a lot of energy
right so these are some of the small
small things which we can implement in
our day to day life so that we can also
contribute or we can also give our part
or we can perform our best to conserve
our natural resources sustainable
management is the gist of this entire
lesson so what we should always
concentrate on is sustainable management
that means managing natural resources in
such a way that they can be sustained
for the future generation so that they
do not get depleted or they do not get
extinct so we have to manage the natural
resources in that way so what is such
sustainable management management of
natural resources in such a way that
basic need or dependency from these
resources is met it is something like I
mean managing the resource doesn't mean
that you do not use that resource you
use that resource to meet the basic
needs for example it is of course you
need water for your survival so you make
use of water you utilize water for
drinking purpose for cooking for washing
clothes you you make use of it but you
do not waste water do not overuse it so
use it for the basic needs our future
generation can also make use of it you
should also have a
as soon as we stop wasting things then
what will happen the things will remain
there so the stock will remain there for
our future generation to use it use of
these resources do not cause too much
harm to the environment if they make too
much use of these resources for example
if we burn too much of coal we should
burn coal only do that extent what we
need right but if you start burning too
much of coal we are causing more and
more harm to the environment
unnecessarily
first of all we are getting rid of the
resources the limit of coal is also
increasing at the same time we are
causing more harm to the environment so
they should make use of natural
resources in such a way that our basic
needs are met it is left for our future
generation and the environment is not
harmed to a large extent so this is
known as sustainable management and all
of us should join hands and help in
managing natural resources in a
sustainable way so that's all in this
lesson so see you all in the next lesson
thank you please visit examview calm to
watch free educational videos try 3
online tests get the best quality study
materials study from the best tutors and
mentors and much more thank you once
again