Key learning points

1. A non–renewable energy resource cannot be replenished as it is used.
2. Non-renewable energy resources include fossil fuels (coal, oil and gas) and nuclear fuels.
3. A renewable energy resource can be replenished as it is used.
4. Renewable energy resources include biofuels, wind, hydroelectricity, geothermal, tidal, solar and water waves.
5. Science can identify environmental issues, but political, social, ethical and economic considerations determine action.

Keywords

• Renewable energy resource - an energy resource that can be replenished as quickly as it is used or will not run out

• Non-renewable energy resource - an energy resource that cannot be replenished as quickly as it is used and will eventually run out

• Fossil fuels - energy sources formed over millions of years from the remains of dead organisms

• Sustainable energy - using energy resources so that, in the future, there will be enough for people's needs

Common misconception