chapter 6 - Renewable and Non - renewable enrgy

What is renewable energy?

Energy from sources that will not run out and can be naturally replenished.

What is non - renewable energy?

Energy from sources that are finite and will eventually run out

Give 3 examples of renewable energy sources

Solar power

Wind power

Hydroelectric power

Give 3 examples of non - renewable energy sources

Coal

Oil

Natural gas

What are the main advantages of renewable energy/

Sustainable

Low or zero carbon emissions

Reduces dependence on imported fuels

Less environmental damage long - term

What are the disadvantages of renewable energy?

• High initial cost

• Can be unreliable (weather-dependent)

• Requires space (e.g. wind farms, solar fields)

• Some impact on ecosystems (e.g. hydroelectric dams)

What are the advantages of non-renewable energy?

• High energy output

• Reliable and consistent supply

• Infrastructure already exists

• Often cheaper in the short term

What are the disadvantages of non-renewable energy?

• Will eventually run out

• Major source of greenhouse gases

• Causes air and water pollution

• Often extracted in environmentally harmful ways

Which energy sources release the most CO₂?

Coal + Oil

Which renewable energy is most widely used globally?

Hydroelectric power - especially in countries with large rivers and mountainous areas

Why are some countries slow to switch to renewables?

• High cost of new infrastructure

• Reliance on fossil fuel industries

• Energy needs are too high for intermittent renewables