Vocab #6

Question 1

Thermodynamics

Answer 1

The study of heat and its transformation to mechanical energy.

Question 2

First Law of Thermodynamics

Answer 2

Heat added to a system is transformed to an equal amount of some output form of energy; a version of the law of energy conservation.

Question 3

Second Law of Thermodynamics

Answer 3

States that the total entropy of an isolated system can never decrease over time, and is constant if and only if all processes are reversible.

Question 4

Third Law of Thermodynamics

Answer 4

States that the entropy of a system at absolute zero is a well-defined constant.

Question 5

Convection

Answer 5

A means of heat transfer by movement of the heated substance itself, such as by currents in a fluid.

Question 6

Conduction

Answer 6

Energy transferred from particle to particle within certain materials or from one material to another when the two are in direct contact.

Question 7

Radiation

Answer 7

Energy transmitted by electromagnetic waves.

Question 8

Thermal Energy Transfer

Answer 8

Involves the transfer of internal energy. The three of thermal energy are conduction, convection and radiation.

Question 9

Thermal Equilibrium

Answer 9

The relationship between two isolated systems the states of which are such that no net transfer of energy would occur between them if they were connected by a diathermic wall.

Question 10

Law of Conservation of Energy

Answer 10

Energy cannot be created nor destroyed. It may be transformed from one form into another, but the total amount of energy never changes.

Question 11

Entropy

Answer 11

A measure of the disorder of a system.