Temperature and Heat Transfer (copy)

Temperatures

reported in degrees Celsius (°C) or degrees Fahrenheit (°F)

Temperature change (or difference)

reported in Celsius degrees (C∘) or Fahrenheit degrees (F∘).

Volume thermal expansion

The volume of an object changes when its temperature changes

𝜷

coefficient of volume expansion

Heat

energy that flows from a higher-temperature object to a lower-temperature object because of a difference in temperatures

joule (J)

SI Unit of heat

Internal energy

The heat that flows from hot to cold originates in the ____________ of the hot substance

J/kg

SI Units of Latent Heat (L)

Solid to liquid and vice versa

Latent heat of fusion, Lf

Liquid to Gas and vice versa

Latent heat of vaporization, Lv

Solid to Gas and vice versa

Latent heat of sublimation, Ls

Convection

the process in which heat is carried from one place to another by the bulk movement of a fluid

Conduction

the process whereby heat is transferred directly through a material

Thermal conductors

Materials that conduct heat well

Thermal insulators

Materials that conduct heat poorly

Radiation

the process in which energy is transferred by means of electromagnetic waves

True

(True/False) A material that is a good absorber is also a good emitter

perfect blackbody

A material that absorbs completely