EXAM - Heat Transfer Flashcards
What is the process of heat transfer in a solid
Conduction
Difference between a thermal conductor and an insulator
The conductor is the type of material which allows the electric current or heat to pass through it whereas the insulator does not allow the electric current or heat to pass through it.
Three examples of thermal conductors
Silver. Gold. Copper. Diamond. Stainless steel. Aluminum. Beryllium oxide.
Three examples of an insulator
Rubber. Glass. Pure water. Oil. Air. Diamond. Dry wood. Dry cotton.
The process of heat transfer for fluids
Convection is the process of heat transfer from one location to the next by the movement of fluids.
The process of heat transfer in a gas
Convection is the process of heat transfer from one location to the next by the movement of fluids.
Why can heat radiation travel through a vacuum
This is because radiation involves electromagnetic waves, not particles, and is therefore able to transmit heat across a vacuum.
Which surfaces are best absorbers of heat radiation
Black surfaces are the best absorbers of heat radiation.
Why are teapots and Kettles silver
To stop heat escaping by radiation
Why are stoves dull black
To radiate heat to a room
Why are blankets shiny silver in a first aid kit
To stop heat los from a person pulled from a cold sea
What surface is the best emitter of heat
Dull Black
