1. Temperature and Heat Transfer
Thermal Energy
Temperature and Heat Transfer

2. 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

3. 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

5. 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

6. 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.

7. Types of Heat Transfer Conduction Convection Radiation
The suffix “-ion” means the process. Each of these three terms describe a process by which heat is transferred

8. Conduction Conduction = Direct Contact
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

9. 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

10. Radiation Radiation = Rays
The process of transferring heat by electromagnetic waves.
No State of matter identified
Radiation = Rays