Thermal physics 0.0 / 5 ? Applied ScienceThermal physics BTEC NationalEdexcel Created by: Saarah17Created on: 27-10-22 21:10 Absolute temperature Coldest possible temperature No internal energy Particles are stationary 1 of 31 Thermodynamic temperature Measure of the average total internal energy of an object 2 of 31 Absolute zero Lowest possible temperature 3 of 31 Work Energy transferred 4 of 31 System Mechanism used 5 of 31 Surroundings Atmosphere around the mechanism 6 of 31 Heat Quantity of thermal energy transferred during the process 7 of 31 Temperature The intensity of heat in a substance or object 8 of 31 Thermal equilibrium Two objects bin contract at the same temperature No heat energy is transferred 9 of 31 Thermometer An instrument used for measuring temperature 10 of 31 Heat engines Machine or system that converts heat into work 11 of 31 Energy efficiency Use of less energy to do a task 12 of 31 Thermal efficiency Heat used by a heat engine 13 of 31 Equation of state PV = RT 14 of 31 Latent heat Energy released or absorbed 15 of 31 Vapour Substance in the gas phase 16 of 31 Vaporisation Convert a substance from a liquid or solid phase into the gas phase 17 of 31 Condensation Process where water vapour becomes liquid 18 of 31 Saturated vapour Vapour at the temperature of the boiling point Is in equilibrium with its condensed state 19 of 31 Fusion Process of the joining of 2 or more things together to form a single product 20 of 31 Phase - 21 of 31 Triple point Condition of temperature and pressure which the gas, liquid and solid phases of a substance can be in equilibrium 22 of 31 Critical point Set of conditions under which the liquid and vapour become identical 23 of 31 Natural process Radiated energy is retained without reflecting or passing through a medium 24 of 31 Entropy Measure of a system’s thermal energy per unit temperature that’s unavailable for doing work 25 of 31 Reversible process Entropy for system is 0. No change in entropy Reversing heat transfer and work done 26 of 31 Isothermal Temperature doesn’t change 27 of 31 Adiabatic No heat transfer 28 of 31 Heat capacity Heat absorbed by a material to the temperature change 29 of 31 Maximum theoretical efficiency Carnot efficiency -> maximum efficiency you can get when the heat engine is operating between two temperatures 30 of 31 Equation of pressure P = F/A F = P x A (pressure, force, area) 31 of 31
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