More energy transfers by heating Flashcards
1
Q
What is thermal conductivity?
A
How well an object transfers energy by conduction - materials with a high thermal conductivity transfer energy between their particles quickly.
2
Q
How can convection be reduced?
A
Stop the fluid moving, to prevent convection currents from forming.
3
Q
Methods of insulation: trapping pockets of air
A
Clothes, blankets, and foam cavity wall insulation
4
Q
How do these work?
A
1) The air can’t move so the energy has to conduct very slowly through the pockets of air.
2) This means less can escape.
