Physics Key Stage 4

Contents

Energy

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

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

Calculating Energy Stores

• Calculating Kinetic Energy
• Calculating Gravitational Potential Energy
• Calculating Elastic Potential Energy|Calculating Elastic Potential Energy
• Calculating Thermal Energy

Energy Transfers

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

Real World Energy Transfers

• Accelerating Car
• Falling
• Electrical Circuits
• Springs
• Power Stations
• A Boiling Kettle

Power Ratings of Electrical Appliances

• Power
• Energy Transfers in Electrical Appliances

Conservation, dissipation and national and global energy sources

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

Improving Energy Transfers

• Lubrication
• Thermal Insulator - thickness and thermal conductivity
• Energy Efficiency
• Power Efficiency

====Energy Resources==== The future trends in energy resources

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