Download Thermal Energy

Thermal Energy
Temperature and Heat Transfer
Temperature: The average kinetic energy of
the particles in an object or substance
( Fahrenheit ºF and Celsius ºC )
32 ºF = 0 ºC
Thermometer: Instrument to measure Temperature
Scientists use the Kelvin Scale (K)
• Zero Kelvins (0K) = Absolute Zero
• Absolute Zero is the lowest temperature possible.
• At Zero K particles have no kinetic energy
Zero K = -273 ºC
Heat Transfer
Heat is the Transfer of Thermal Energy from an
object Of higher temperature to an object of
lower temperature
• Heat does NOT transfer randomly
• Heat only travels in ONE direction
• The warmer object will cool down and the cooler object
will warm up until they are the same temperature.
When Equilibrium, or a balance in temperature, is
achieved heat transfer will stop.
• Adding thermal energy or “Heating” particles increases
their motion, resulting in an increase of temperature.
Types of Heat Transfer
1.Conduction
2.Convection
3.Radiation
The suffix “-ion” means the process. Each of these three terms describe a process by which heat is transferred
Conduction
• The process of Heat being
transferred from one particle of
matter to another in an object
without the movement of the
object.
• Occurs in Solids
• Conduction = Direct Contact
Convection
• The process of heat being
transferred from one location to
another by currents.
• Heat is transferred by currents
within the liquid or gas (air).
• Convection = Circular Motion
Radiation
• The process of transferring
heat by electromagnetic
waves.
• No State of matter identified
• Radiation = Rays