Paper Two: Conservation of energy and resources

Question 1

Where does energy come from

Answer 1

• non-renewable sources e.g. oil, coal, natural gas
• alternative energy sources (renewables) e.g. wind, hydro, solar, wave, tidal

Question 2

Advantages of renewable energy

Answer 2

• sustainable, never runs out
• renewable energy facilities require less maintenance than traditional generators
• fuel derived from natural resources reduced operational costs
• little or no waste such as CO2 is produced
• social and economic benefits-employment

Question 3

Disadvantages of renewable energy

Answer 3

• can be difficult to generate the large quantities of electricity that are produced by traditional fossil fuel generators
• often relies on weather for source of power
• cannot be stored in large quantities for later use as impracticalities of having battery power plant back ups
• currently more expensive that traditional fossil fuel or nuclear energy-as large capital cost

Question 4

Renewable Energy Systems

Answer 4