Chapter 12 vocab

Question 1

Energy transferred between two objects In contact with one another and always flows from the hotter object to the cooler object

Answer 1

Heat

Question 2

The state in which the rate of energy flow between two objects is equal and the objects are at the same temp

Answer 2

Thermal equilibrium

Question 3

A type of thermal energy transfer that occurs from the motion of fluid in liquid or gas that is caused by difference in temperature

Answer 3

Convection

Question 4

The thermal transfer of energy by electromagnetic waves through the vacuum space

Answer 4

Radiation

Question 5

The amount of energy that must be added to the material to raise the temperature of a unit mass by one temperature unit.

Answer 5

Specific heat

Question 6

The amount of heat required to change 1 kg of substance from a solid state to a liquid state at it’s melting point

Answer 6

Heat of fusion

Question 7

The amount of heat required to change 1kg of a substance from a liquid state to a gaseous state at it’s boiling point

Answer 7

Hear of vaporization

Question 8

States that the chance in thermal energy of an object is equal to the heat that is added to the object minus the work done by the object

Answer 8

First law of thermodynamics

Question 9

A device that continuously converts thermal energy to mechanical energy; requires a high temperature thermal energy source, a low temperature receptacle and away to convert the thermal energy into work

Answer 9

Heat engine

Question 10

A measure the disorder in a system

Answer 10

Entropy

Question 11

States that natural processes go in a direction that maintains or increases the total entropy of the universe

Answer 11

Second law of thermodynamics

Question 12

The process by which kinetic energy is transferred when particles collide

Answer 12

Conduction