Energy - GCSE Physics (Single Science) - BBC Bitesize

Overview

• Energy topic covers:
  • Energy stores
  • Energy transfers
  • Energy resources
  • Environmental impact of energy use

Key Concepts

Changes in Energy Stores

• Energy is located in different stores and can be transferred, dissipated, or stored.
• Energy cannot be created or destroyed.

Work, Power, and Efficiency

• Energy enables work to be done.
• Power: Rate of energy transfer.
• Efficiency: Proportion of energy usefully transferred.

Energy and Heating

• Energy transmission methods:
  • Conduction
  • Convection
  • Radiation
• Conductivity comparison is based on the time taken for energy transmission through materials.

Energy Demands

• Energy transfer occurs through people, animals, and devices.
• Most energy is supplied by electricity.
• Energy sources:
  • Renewable
  • Non-renewable

Exam Preparation

• Understanding exam questions boosts performance:
  • Multiple choice
  • Descriptive and explanation questions
  • Mathematical skills
  • Extended writing

Additional Resources

• Physics: Exam-style questions
• Physics revision resources
• Bitesize revision podcasts
• Jobs that use Physics

External Links

• Isaac Physics
• Quizlet
• Revisio
• Tassomai
• Science Museum