CHAPTER 6 MS 160
ELECTRICITY AND MAGNETISM
1.Electric current must be generated to produce current
2.We want very BIG power/energy to generate this
Suatu kuasa/tenaga yang BESAR untuk menjanakan lektrik
3.The POWER SOURCE to generate electric are two types:-
a.Renewable Energy Sources-
-energy can be replaced continually and never deplete/ boleh bertukar ganti berterusan dan tak
habis
[sumber Tenaga yg boleh diperbaharui]
Example
-hydro energy-kuasa air menjanakan elektrik
-wave energy-kuasa ombak
Tidal energy- tenaga pasang surut air laut
Wind energy-
Solar energy
Biomass energy- bahan terbuang dari benda hidup seperti hampas kelapa/tebu/najis hasilkan gas
Geothermal energy – air panas dalam bumi/hotspring
b.NON_-renewable Energy/
-Tenaga Yg TAK boleh diperbaharui/diganti / habis begitu sahaja
iEnergy that CANNOT be replace and WILL deplete
Example:-
-Nuclear energy
-Coal
-Natural gas- gas yg dijumpai Bersama petroleum dlm bumi
-Petroleum--- petrol,diesel, biasanya
Rajah 6.2 ms 163 menunjukkan contoh stesen janakuasa yg guna sumber tenaga di atas.
BAGAIMANA PROSES ELEKTRIK DIJANAKAN
APA YG DIBUAT OLEH SUMBER TENAGA ITU DI STESEN JANAKUASA
[INSYA ALLAH MAI SEKOLAH LEPAS CUTI RAYA, SAYA HABAG ]
TENGOK DULU MS 167
JENIS JANAKUASA :MEKANISME PROSES YG BERLAKU SERTA PERUBAHAN TENAGA
1.Thermal Power station
-thermal ialah HABA PANAS yg mendidihkan air
-sumber yg mendidihkan air/hasilkan api ialah DIESEL, natural gas, petrol…
Mechanism:
Burning of fuel(bahan api) spt diesel/petrol/coal--- water boils and produce steam/wap air panas
- turbin rotates—produce electrical energy
Energy Change:
Chemical Energy/semua bahan dari benda hidup-fossil/biomass/coal ialah CHEMICAL ENERGY
Heat energy/panas -Kinetik/Gerakan berpusing/rotates turbin arus mengalir/eelectrical
energy
2.SOLAR POWER STATION:
Mechanism:
Sunrays solar panel convert light energy to electrical current
Energy Change: solar energy electrical energy
[takde Gerakan pusingan turbin/kipas]
3.hydroelectric POWER STATION MS 168
MECHANISM:
HIGH dam store water/takungan air yg byk membentuk tekanan tinggi water from high level flows
to low level/ada terowong air yg mengalirkan air dgn laju turbins is rotated/berpusing
generates electricity
Energy Change:
Gravitational Potential Energy/high kinetic energy/flows/rotates-ada Gerakan je dipanggil
kineticelectrical energy
4.WIND POWER STATION
Mechanism:
High speed of wind -moves/rotates blade - produce lectric
Change of Energy:
Kinetic energy/bergerak-move/roatate electrical energy
5.NUCLEAR POWER STATION: ms 169
Nuclear reaction/tajuk radioactive-sinaran radioactive hasil haba yg tinggiboils water peroduce
steam rotates turbin/blade/fan produce lectrical energy
Energy Change:
Nuclear Energy Heat Energy/panas Kinetic Energy/ada Gerakan pusing/ electrical energy
6.BIOMASS POWER STATION
Mechanism:
Biomass produce methane gas/ bahan buangan spt hampas kelapa sawit hasil gas api dari gas
panaskan airair yg didih produce steam steam yg amat panas pusingkan turbin/ rotates
turbin/blade produce electrical energy
Energy Change:
Chemical Energy/dari benda hidup dipanggil chemical Heta energy - kinetic Energy electrical
Energy
