Thermal Physics

Question 1

Temperature

Answer 1

Measure of the average KE possessed by particles of the system.

Question 2

Heat

Answer 2

Thermal energy that flows naturally from ta region of higher temperature to lower temperature

Question 3

Thermal equilibrium

Answer 3

Two objects in thermal contact with each other cease to have any net exchange of thermal energy

Question 4

Zeroth law of thermodynamics

Answer 4

If A and B are separately in thermal equilibrium with C, A and B are also in thermal equilibrium with each other

Question 5

Specific heat capacity

Answer 5

Quantity of heat per unit mass required to raise the temperature of a unit mass of substance by 1 unit of temperature

Question 6

Specific latent heat of fusion (or vaporization)

Answer 6

Quantity of energy per unit mass required to change unit mass of substance from solid to liquid phase (or liquid to gas) without any change in temperature.

Question 7

Internal energy

Answer 7

Sum of the microscopic random kinetic energies and microscopic potential energies of the molecules of the system.

Question 8

First law of thermodynamics

Answer 8

The increase in internal energy is the sum of the heat supplied to and work done on the system