Date
ENERGY ResoURCES Page
77
ENERGY It is a word derived from the greek word "Ehergia
which means capacity or ability to do NDrk
Why do we need energy
work and it is f
AnsAs energy is a
cabaciky for doing Also o 2
the basic require.ments for humans. So human Saciety using ehergy
in various forms for Carrying out all its acHHvities.
Human beings uses energy _practi cally tor every-thinq Like
do work, to move gobds from one place to ahother, t o run
machines and many more thingS
The body/bodies which dre in motion possess KINETICENERGY
The body bodies which are in rest poscess POTENTIAL ENERY.
VARIOUS FoRMs OF ENER4Y
Mechanical energy v)Tdal eherg9y
n)Thetmal energy v Wind energy
Atomic energ9y w)Solar energy', etc
AltheSe enerqles are inter-Convertt ble ie. Can be con verted into
otber form of energy
Mechanical enerqy t is a enerqy a Substance _o System has
because of i t s motion For ex machines uses mechaDical enerqy
o do w0tk
2) hermal energy It ts the energy a Substance or System has_related
to its temperature, i.e:, the ener9y of moving or vibrating molecules
Forex We use he solar raditioo t8 Cook food._
, alassMate
Date
Page
in the bonds 6 h
3)Chemicol energy
Compounds atoms abd
I t is the Chergy
molecules)
Stored
echemical
Chcmical cnergy is a Chemical reaction, oe
released in
of heat. For e x -we use the chemical_ehergy
in fuels
the fom ive
Noed Coal by burning themn
MOVLngeletrons tn
* Electrical energy- It is the energy cast2ed by
t h emoSt Common ahod usefw
e l e c t r i c Conductor I t is one ef
aD
toms e energy Ex.-Lightening
Other form o f ehergy are alst
Converted eherqy.
Ty_elecfriCal
Stored inuels Qike
or ex Power plants Convert chemicoal energy
Coal into electicity -through Various changes ib itstotm
S)Nuclear energy- It is the energy that istrabbed inside each atom.
his energy can be produced either by the fuston (Combininq atoms)
fission shliting e atems)process_
The ission process is the widely used method
Dranium is the key rouw material.
ENER&y RESOURCES
Energy_either exist in He earth or Comes trom the outer spact
Jhe enegy exist in the earth is called CAPITAL ENERGY
Jhe capital ehergy 3ources dre tossil fuels , nuclear tucs
heat traps etc
Jhe energy Cones trom the outer space is Called CELESTIA
ORINCorME ENERGY
he celestial energy Lesources are
electoma9netic;
totional and P91ticle energyfrom stars Planets and
qCvitat moon.t
ms
, alAsSMAte
Date
Page.
7RENEWABLE ENERGY RESOURCE/ NoN- CoNVENTIONAL ENERY RES:
ahe reneuoable Source e enerqy is defined as the energy tesources
Lwhh are continuously produced in'nature and are essentialy
inexbauStible_at leastin the Hme frame of buman Societies.
ex ) Solar energy Seltd waskes
n) Wind energy Vi) Fuel cells
n) Tidal energy vn) Peat
v)Ocean themal energy u) edtbermal energy etc:
eotherma energy,peat and fuel wood must be used ata rate
less than their natural rate kenewable or they tnust be periodic
-ally be allouwed time to buil up again.
NoN-RENEWABLE ENER&Y RESOURCE/ CcoNVENTIOnNAL ENERyny RES.
he non- renewable energy resources are defined as the ehergy
roiurce whicb bave beer accumidated oveyrthe ages and not
quicklyreplenishable when they are exhausted
e - 1)Fososu Fuels )Nuclear Fuels Heat ttraps
ADVANTAES OF RENEWABLE SOURCE Of ENER&Y -
The renewwable Source of energy are non- exhaushible
" he reneuwable energy tesausces are Pollution free and help th
maintaining the ecologica balahce except biomass energy resouce
h e s e Sources are abudantky Preely available in nature..