ch14

Question 1

movement of thermal energy

Answer 1

transferred from regions of higher temperatures to regions of lower temperature

Question 2

thermal equilibrium

Answer 2

when different regions in thermal contact are at the same temperature //// temperature of the spheres is the same no (net) transfer of energy between the spheres

Question 3

properties of objects that varies with temperature

Answer 3

1- density of a liquid
2- volume of a gas at constant pressure
3- resistance of a metal
4- e.m.f of thermocouple

Question 4

specific heat capacity

Answer 4

the quantity of thermal energy per unit mass required to raise the temperature of the substance by one degree

Question 5

equation of specific heat capacity

Answer 5

^Q=cm^0

Question 6

latent heat of fusion

Answer 6

the quantity of thermal energy required to convert unit mass of solid to liquid without any change in temperature

Question 7

equation of latent heat of fusion or vaporisation

Answer 7

^Q=mL

Question 8

latent heat of vaporisation

Answer 8

the quantity of thermal energy needed to convert unit mass of liquid to vapor without any change in temperature