P1 : Thermal energy transfer

Question 1

What are the three main processes of thermal energy transfer

Answer 1

Conduction (Mostly in solids)
Convection (In liquids and gases)
Radiation ( A type of electromagnetic radiation that can travel through a vacuum)

Question 2

Thermal conductivity

Answer 2

Tells you how well a material conducts heat (in units of W / M*C)
The higher the thermal conductivity of a material the higher the rate of energy transfer by conduction across the material

Question 3

What can we use to reduce heat loss in a house

Answer 3

draught stoppers, loft insulation, double glazing, carpets, cavity wall insulation or silvered plaster