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UNIT 4 - AOS 1 (What is a sustainable mix of energy sources?) - Coggle…
UNIT 4 - AOS 1 (What is a sustainable mix of energy sources?)
Energy:
As the capacity to perform work because when energy is transferred from an object or system it can perform useful work.
KINETIC ENERGY:
Energy associated with an object's speed and potential energy is associated with an object's position.
POTENTIAL ENERGY:
Refers to 'stored' energy that can be released to perform work.
MECHANICAL ENERGY:
The movement of objects and the conversion of potential energy into other forms of energy involving movement.
Heat and temperature:
Heat or thermal energy plays an important role in nearly all energy transformations.
Temperature is a measure is the average kinetic energy of the molecules within a material.
Chemical energy:
Is a form of potential energy that is due to the relative positions of the atoms and ther elcetrons in the molecuel that make up a substance.
Energy resources:
Are naturally occuring fuels or energy sources that can be covented into forms of energy useful to society.
Fuels:
Are substances that contain chemical enrgy that is released when oxidised; usually by combustion.
Energy transformation:
Implications of the laws of thermodynamics:
Power:
Is a term related to energy. It is the amount of energy available or used over a given time.
THE UNIT FOR POWER:
watt (W) and power can be calculated from the following:
Power (watt) = Energy (joules) / Time (seconds)
Non-renewable energy sources:
Refers to those that can last indefinitely without any reduction in their supply - they are either essentially inexhausible.
Producing electricity:
Both renewable and non-renewable sources of energy can be harnessed to produce electricity.
ELECTRICITY: is produced when fuel or other sources of energy are used to drive generators or turbines.
Fossil fuels:
Include coal, petroleum and natural gas. Fossil fuels formed from dead and decaying organcisms trapped below layers of sediments or rocks.
Coal:
Coal is the most plentiful of the fossil fuels, making up about 94% of Austalia's fossil fuels energy reserves and providing 62% of our total energy production.
Petroleum:
Natural gas:
Coal seam gas:
Uranium (nuclear fission)
Nuclear fission:
Limits to non-renewable fuels:
Fossil Fuel Depletion:
Peak Oil: