Heat and Heat Transfer Heat Temperature Conduction Convection

Heat and Heat Transfer Heat Temperature Conduction Convection Radiation

What is heat? What is temperature? Are heat and temperature the same?

Temperature • Hotness and coldness of a body • Related to the kinetic energy of the molecules

Heat • Energy being transferred from one body to another • Internal Energy or Thermal Energy • Energy contained in a body • Related to its temperature

Heat Transfer • Heat energy flows from bodies with higher temperature to bodies with lower temperature • Heat transfer occurs until both bodies have the same temperature • Thermal equilibrium

Heating does not always increase temperature. • Change in the arrangement of particles • potential energy

Mechanisms of Heat Transfer • • Conduction Convection Radiation In the video, take note of • What states of matter undergo each mode of heat transfer • The mechanism of each mode of heat transfer • Examples of experiments that can show each mode • What everyday activities show each type of heat transfer

Conduction • Direct transfer of energy through vibration of atoms • Happens in solids • Mechanism

Conductor • Material that allows heat or energy to pass through (conducted) it. • Metals: very good conductors • Aluminum • Iron • Good heat conductors are also good electrical conductors.

Insulator • Material that ____ heat to flow through • inhibit or does not allow • Conduct slowly • Examples: • Plastic • Wood • Rubber