Physics 1 - 1.7 0.0 / 5 ? PhysicsEnergyGCSEAQA Created by: ex-JohnsonfamilyCreated on: 19-04-15 14:11 The greater the temperature difference between an object and its surroundings... ...the greater the rate at which energy is transferred. 1 of 6 What does the rate at which energy is transferred depend on? 1. The materials the object is in contact with. 2. The object's shape. 3. The object's surface area. 2 of 6 Why do we maximise the rate of energy transfer? To keep things cool. 3 of 6 How do we maximise the rate of energy transfer? We use things that: Are good conductors, are painted dull black, or have the air flow around them maximised. 4 of 6 Why do we minimise the rate of energy transfer? To keep things warm. 5 of 6 How do we minimise the rate of energy transfer? We use things that: Are good insulators, are white and shiny, or prevent convection currents by trapping air in small pockets. 6 of 6
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