I AM ACTUALLY GOING TO FAIL CHEMISTRY

I have not studied properly for chemistry.
So now, it is time to see how much I know about anything.

Renewable resource: a source of energy which is consumed at a faster rate than it is produced by society. There is generally a limited supply.
Non-renewable resource: a source of energy which is produced by society at a faster rate that at which it is consumed. There is a large amount of this resource to be used.

secondary fuels - unnatural sources of energy produced by primary sources - eg: electricity

Nuclear fission: a nuclear reaction in which a large nucleus is split into smaller nuclei so the large amount of energy  of nuclear force released can be collected; eg: splitting U-236 atom (uranium) into Boron and Cadmium.  If nucleus is large, forces of repulsion and nuclear force = therefore unstable atom. Small change of mass before + after.

Nuclear fusion: a nuclear reaction in which two smaller nuclei are joined together, releasing energy in the process, which can be used.

Advantages of nuclear reactions: a large amount of energy is produced in each reaction, so it is an efficient resource.
Disadvantages of nuclear reaction: nuclear exposure is known to cause bodily harm (can be carcinogenic)

Hydro-electricity - potential --> kinetic --> mechanical ---> electrical
Using water pressure to generate electricity - damming water first
Advantages: water is a renewable resource, relatively cheap to run
Disadvantages: environmental impacts of damming

Coal - 3 types - peat, brown, black
digging coal deposits out from underground, for use at coal power fire stations to generate electricity.
chemical --> thermal --> kinetic --> mechanical ---> electrical
^                       ^                 ^               ^                      ^
coal              heating coal     steam         turbine            generator
advantages - good supply in victoria, cheap
disadvantages - production releases emissions of Co2 and SO2, infinte resource

Solar energy
Glass covers + Dark coloured Panels of copper/ aluminium which attract sun's energy, with water underneath. Heat energy is absorbed by water in pipes and carried to photovoltaic cells.
photovoltaic cells - electrons transfered from n-type layer to p-type layer to creative negative p + positive n --> makes an electrical field!
p - boron
n- phosphorus
solar thermic generation - steam turbine produces steam with sunlight to run generator
sun's rays focused on coal-steel pipes in vaccuum insulated tubes
synthetic oil flows through gas pipes that abosrbs heat and sends it to gas exchanger at 400deg steam
Advantages -
Disadvantages - doesn't work in winter, no way to store sun's heat energy, expensive

Geothermal
Drilling deep into ground to reach molten rock layer. Molten rocks generate heat energy, and water is poured onto rocks to make steam, which is pumped up through pipes. Kinetic energy of steam is used to generate a turbine, from which comes electrical energy.
Advantages - Efficient source of energy, No pollution of atmosphere
Disadvantages - expensive to drill into ground

Wave power


Tidal power
Using tide power to make electricity + moving energy of tide to turn turbine.
advantages: cost-effective, no greenhouse emission\
disadvantages: can only be used twice a day
variable output of energy - depends on strength of tide


Wind power
Uses mechanical energy of turbines being turned by wind to generate electricity
Advantages: good power source for remote areas
most efficient in winter, when there is greatest wind
Disadvantage: varying amount of energy produced, expensive to install wind turbines

i dont care anymore. hopefully i pass.