AQA GCSE Physics

Contents

4.1 Energy

4.1.1 Energy changes in a system, and the ways energy is stored before and after such changes

4.1.1.1 Energy stores and systems

Systems

• Open System
• Closed System
• Closed Isolated System

Energy Store

• Thermal Energy Store
• Elastic Potential Energy Store
• Chemical Potential Energy Store
• Kinetic Energy Store
• Magnetic Potential Energy Store
• Electrostatic Potential Energy Store
• Nuclear Potential Energy Store
• Gravitational Potential Energy Store
• Internal Energy Store
• Vibrational Energy Store

Energy Transfers

• Mechanical
  • Work Done by a Force
• Electrical Energy Transfer
  • Work Done by Electrical Current

4.1.1.2 Changes in energy

Calculating Energy Stores

• Calculating Kinetic Energy
• Calculating Gravitational Potential Energy
• Calculating Elastic Potential Energy

4.1.1.3 Energy changes in systems

• Calculating Thermal Energy
• Specific Heat Capacity

GCSE Physics Required Practical: Determining Specific Heat Capacity

4.1.1.4 Power

• Power
• Energy Transfers in Electrical Appliances

4.1.2 Conservation and dissipation of energy

4.1.2.1 Energy transfers in a system

• Conservation of Energy
  • Closed Isolated System
• Total Energy
• Useful Energy
• Wasted Energy
• Dissipated Energy

4.1.2.2 Efficiency

• Energy Efficiency
• Power Efficiency
• Lubrication
• Thermal Insulator

4.1.3 National and global energy resources

Energy Resources

• Non-renewable Energy Resource
  • Coal Power
  • Oil Power
  • Gas Power
  • Nuclear Power
• Renewable Energy Resource
  • Biofuel
  • Geothermal
  • Hydroelectric
  • Solar
  • Tidal
  • Wave
  • Wind

4.2 Electricity

4.2.1 Current, potential difference and resistance

4.1.1.1 Energy stores and systems