Notes 1 & 2

Question 1

States of motion

Answer 1

-Vibration
-Translation
-Rotation

Question 2

Types of thermal energy transfer

Answer 2

-Convection
-Conduction
-Radiation

Question 3

Convection and example

Answer 3

Heat transferred by the motion of fluids of different densities

Ex:Boiling water

Question 4

Conduction and example

Answer 4

Heat created by the collision of particles within a substance

Ex: cast iron frying pan

Question 5

Radiation and example

Answer 5

Transfer of thermal energy through space in the form of electromagnetic waves

Ex:sun

Question 6

Temperature

Answer 6

Degree of warmth or cold measured in a quantative term

Celsius or Kelvin

Question 7

Thermal equilibrium

Answer 7

State between 2 or more bodies where temperature doesn’t change

Ex: energy flow from your hand to door knob is equal to energy flow form door knob to hand

Question 8

Celsius to kelvin

Answer 8

Add 273.15

Question 9

Kelvin to Celsius

Answer 9

Subtract 273.15

Question 10

Specific heat

Answer 10

Amount of energy that must be added to raise the temperature of a unit mass by one temperature unit (J/Kgk)

Question 11

Heat

Answer 11

Energy that flows as a result of temperature difference
(Q)

Question 12

Thermodynamics

Answer 12

Study of property’s of thermal energy and its changes

Question 13

Heat of fusion

Answer 13

Amount of energy needed to melt one kilogram of a substance

Question 14

Heat of vapour

Answer 14

Amount of thermal energy needed to vaporize one kilogram of a substancd

Question 15

First law of thermodynamics

Answer 15

(Energy cannot be created or destroyed)

Total increase in thermal energy of a system is the sum of the total work done on it and the heat added to it

Question 16

Second law of thermodynamic

Answer 16

(Increase in randomness of the universe)

Natural processes go in a direction that increases the total entropy of the universe

Question 17

Entropy

Answer 17

Amount of randomness in a system