HEAT TRANSFERS
HEAT TRANSFER - the transfer of thermal
energy between substances due to a difference in their
temperature
THERMAL ENERGY is the total of all the kinetic and potential energy of all the particles in a substance.
TEMPERATURE is a measurement of the average kinetic energy of the molecules in an object. It is measured with a thermometer. It is a measurement of the internal energy contained in an object.
As the temperature increases, so does thermal energy (because the kinetic
energy of the particles increased).
The flow of thermal energy
(HEAT) always flows from warmer to
cooler objects
Cup gets cooler while hand gets
warmer
Ice gets warmer while hand gets
cooler
Questions
1. What is thermal energy?2. How do you measure thermal energy?3. What is heat? 4. How does thermal energy flow?
Insert video clip – conduction, convection & radiation
CONDUCTION is the
transfer of heat through
a material by direct contact.
CONVECTION is the
transfer of heat in a
fluid (gas or liquid) as a
result of the movement of the fluid
itself
RADIATION is the transfer of heat via
electromagnetic waves
through space
How Are They Alike?
Conduction
Convection
Radiation
How Are They Different?
Conduction
Convection
Radiation
Top Related