Conduction, Convection, and Radiation
P.EN.06.41 - Explain how different forms of energy can be transferred from one place to another by radiation, conduction, or convection.
- The movement of energy from a warmer object to a cooler object is called heat transfer.
- There are three types of heat transfer: Radiation, conduction, and convection
ex. Sunlight to Earth
Conduction: Heat transferred by direct particles of matter.
ex. Soup to pot.
Convection: Heat transfer by the mass movement of a heated liquid.
ex. heating of soup, the Earth’s mantle
- Density: a measure of how much mass is in a given area
- Convection current: the flow that transfers heat within a fluid.
- The heating and cooling of a fluid, changes in the fluid’s density, and the force of gravity combine to set convection currents in motion. If two objects are different temperatures, the heat will flow from the warmer object to the cooler object.
- A conductor transfers thermal energy well. An insulator does not transfer thermal energy well.
- Conductor: A material the conducts heat well
- Insulator: material that dose not conduct heat well