Following intense activity inside a burning building, a firefighter's body has sweated heavily to regulate their temperature. Once they exit the building into a cold, windy staging area, they remove their heavy turnout jacket, exposing their wet cotton undergarments to the cold air.
Use ideas about particles to explain why the evaporation of sweat from the wet undergarments cools the firefighter's skin.
To prevent the firefighter's core body temperature from dropping too rapidly, a medic wraps them in a specialized thermal recovery blanket with a shiny, silver-coloured inner surface.
Suggest why the firefighter is at risk of cooling down dangerously fast in the cold wind if they do not use the thermal recovery blanket.
Explain how the shiny-lined thermal recovery blanket reduces heat loss from the firefighter's body.
