# Shared Flashcard Set

## Details

Thermal Physics
A Level OCR Physics A Unit 4- The Newtonian World
15
Physics
Not Applicable
11/29/2012

Term
 Define    Specific Heat Capacity
Definition
 The energy required per unit mass of a substance to change its state without any change in temperature (Jkg-1)
Term
 Define evaporation
Definition
 The process by which a liquid becomes a gas, at a temperature below its boiling point
Term
 Define Internal Energy
Definition
 The sum of the random distribution of the kinetic and potential energies of the atoms or molecules in a system
Term
 Define Latent Heat of Fusion
Definition
 The energy absorbed by a substance to change its state from solid to liquid without any change in temperature
Term
 Define Latent Heat of Vapourisation
Definition
 The energy absorbed by a substance to change its state from liquid to gas without any change in temperature
Term
 Define Specific Latent Heat
Definition
 The energy required per kilogram of the substance to change its state without any change in temperature (Jkg-1)
Term
 Define Thermal Energy
Definition
 Energy transferred from one object to another because of a temperature difference; another term for heat energy
Term
 Define Thermal Equilibrium
Definition
 A condition when two or more objects in contact have the same temperature so that there is no net flow of energy between them
Term
 Define Thermodynamic Scale
Definition
 A temperature scale where temperature is measured in kelvin (K)
Term
 What does the Kinetic Model allow us to explain?
Definition
 Allows us to explain behaviour and macroscopic properties in terms of the behaviour of molecules
Term
 How will temperature affect the internal energy of an object?
Definition
 It will increase it
Term
 At which temperature do all substances have minimum internal energy?
Definition
 Absolute Zero
Term
 What is the word equation for Specific Heat Capacity?
Definition
 (Energy Supplied)/ (mass x temperature)
Term
 Describe and draw any apparatus of an experiment that would allow one to find the Specific Heat Capacity of a substance
Definition
 (See diagram in books)
Term
 What is Brownian Motion?
Definition
 Discovered by Robert Brown, this is a theory that supports the Kinetic Theory and can be observed using smoke particles under a microscope
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