51ºÚÁÏ

This PowerPoint lesson introduces students to the topic of energy demands, with a focus on renewable and non-renewable energy resources, how electricity is generated in power stations, and the role of biofuels in sustainable energy. Designed specifically for AQA GCSE Combined Science Physics, this resource uses clear explanations, structured tasks, and real-world examples to help students understand where our energy comes from and how it is used.

Energy demands refer to the total amount of energy required to power homes, businesses, and transport. This lesson explains the difference between renewable resources, such as wind and solar, which can be replenished naturally, and non-renewable resources, such as coal and gas, which will eventually run out. Students explore how global and national energy needs are met and consider the consequences of relying heavily on fossil fuels.

The lesson includes an overview of how electricity is generated in both fossil fuel power stations and nuclear power stations, detailing each stage of the process from fuel combustion or nuclear fission to turbine rotation and energy transfer via the National Grid. Sequencing tasks are provided to support understanding of these complex systems.

Also covered are biofuels and biomass, including examples such as bioethanol, biodiesel, and biogas. The lesson discusses how these fuels are produced, how they are used in real life, and the extent to which they can be considered carbon neutral. Students are encouraged to identify the advantages and disadvantages of different energy sources, considering reliability, environmental impact, and sustainability.

This fully editable PowerPoint (.pptx) includes starter activities, sorting tasks, and exam-style questions with answers. Last updated in April 2025, it is aligned with the AQA Combined Science Physics specification and is ideal for classroom teaching, revision, or home learning. Download now to support your students’ understanding of how we meet the world’s energy needs.