Insulation- year 9 physics

Thermal equilibrium

The point where an object looses as much thermal energy to the surroundings as it gains from the surroundings

Insulation

lowers the rate of thermal energy transfer. this makes a system take longer to come to thermal equilibrium meaning it can keep an object warm/cold for a long time

independent variable

the factor that is changed, manipulated or controlled in a scientific experiment

dependent variable

a factor that is measured or observed in an experiment. depends on the changes made to the independent variable.

controlled variable

a factor that is kept constant or unchanged, preventing it from affecting the measured outcome

Loft insulation

creating a thermal barrier in your roof spaces, trapping pockets of air within foam materials to slow down heat transfer, preventing warm air from rising and escaping the house.

cavity wall insulation

filling the gap between your inner and outer walls with materials creating a thermal barrier that traps air to significantly reduce heat loss in winter

aluminium foil between wall and radiator

works by reflecting heat back into the room, stopping it from being absorbed and lost through the wall

double glazing windows

two panes of glass with a sealed gap filled with air or insulating glass for enhanced insulation, reducing heat loss.

thickness of external walls

works by combining structural strength and insulation layers to resist weather.