Insulation

Question 1

What is needed to stop heat transfer?

Answer 1

A good insulator

Question 2

Where does conduction happen best? How do we stop conduction?

Answer 2

Conduction happens best in solids, however it cannot happen in a vacuum because they are no particles to transfer the heat.

Question 3

Where does convection happen best? How do we stop convection?

Answer 3

Convection happens best in fluids and convection currents transfer more heat when there is more fluid moving around. So, to stop convection from happening, remove any fluid.

Question 4

Where does radiation happen best? How do we stop radiation?

Answer 4

Radiation happens best in dark matt surfaces as dark surfaces absorb heat better than shiny surfaces, therefore to stop radiation, cover the object in a shiny surface.

Question 5

Where does evaporation happen best? How do we stop evaporation?

Answer 5

Evaporation happens best when there is a boiling substance present. To stop evaporation, cover up the substance (e.g. put a lid on a pan)

Question 6

(T or F) Insulation stops all heat transfer from happening.

Answer 6

False, it doesn’t stop all heat transfer from taking place, as some thermal energy is always transferred.