# Thermal physics

?
• Created by: Saarah17
• Created 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
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

## Other cards in this set

### Card 2

#### Front

Measure of the average total internal energy of an object

#### Back

Thermodynamic temperature

### Card 3

#### Front

Lowest possible temperature

### Card 4

#### Front

Energy transferred

Mechanism used