Key term for Edexcel GCSE Physics, used in Energy Stores and Transfers.
A relationship where increasing one variable causes a completely consistent, matching increase in another variable (e.g., doubling one doubles the other).
Directly proportional appears in Edexcel GCSE Physics revision content for Conservation of energy, especially Energy Stores and Transfers and Kinetic Energy.
Conservation of energy
Energy Stores and Transfers • Kinetic Energy
Motion and forces
Newton's Laws, Weight and Mass • Weight and Gravitational Field Strength
Forces and matter
Pressure in Fluids • Liquid Pressure Equation
Forces and matter
Pressure in Fluids • Pressure Relation
Forces and matter
Springs and Elasticity • Linear vs Non-linear Extension
Particle model
Gas Laws and Pressure • Absolute Zero
Electricity and circuits
Component Characteristics • V-I Characteristics
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