Module 11 Thermal Energy Vocab Practice

The energy required to convert 1 kg of a substance from a liquid to a gas is the ______________.

• heat of vaporization

• heat of fusion

The energy required to convert 1 kg of a substance from a solid to a liquid is ______________.

• heat of vaporization

• heat of fusion

State the first and second laws of thermodynamics.

Answer explanation

first law of thermodynamics: States that the change in thermal energy of a system is equal to the heat that is added to the system, minus the work done by the system.

second law of thermodynamics: States that whenever there is an opportunity for energy dispersal, the energy always spreads out; states that natural processes go in a direction that maintains or increases the total entropy of the universe.

transfer of thermal energy between objects

transfer of kinetic energy when particles collide

a measure of the energy dispersal of a system

transfer of energy due to motion of a fluid

transfer of energy by electromagnetic waves

A device that converts thermal energy to mechanical energy is a(n) __.

Define the vocabulary term thermal equilibrium.