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
• Internal Energy Store
• Vibrational Energy Store

Calculating Energy Stores

• Calculating Kinetic Energy
• Calculating Gravitational 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

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
• Energy Efficiency
• Power Efficiency

Energy Resources

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

Forces

Forces and their Interactions

Representing Forces

• Vectors
• Forces as Vectors
• Free Body Diagram
• Scale Diagram
• Resolving Forces
• Resultant Force

Contact Forces

• Normal Contact Force
• Friction
• Drag
  • Air Resistance
  • Water Resistance
• Upthrust
• Driving Force
• Thrust
• Lift
• Tension

Non-contact Forces

• Magnetic Force
• Electrostatic Force
• Gravitational Force
  • Weight
  • Gravitational Field Strength

Interactions

• Balanced Forces
• Unbalanced Forces
  • Resultant Force
  • Newton's First Law
• Newton's Third Law
  • Force Pair
• Equilibrium Forces
  • Deformation
    • Elastic Deformation
    • Inelastic Deformation
    • Hooke's Law
    • Spring Constant
    • Work Done by Deformation

Work Done as force x distance, energy transfer

• Work Done
• Mechanical Energy Transfer

Pressure and pressure differences in fluids

• Pressure
  • Normal
• Fluid Pressure
• Atmospheric Pressure
• Upthrust

Moments, Levers and gears

• Moments
  • Centre of Mass
• Levers
• Gears