Physics & How Things Work
How a Fridge Stays Cold
A fridge can't MAKE cold. It pumps heat OUT — and the back is warm because of it.
Outside your fridge: 70°F. Inside: 40°F. And the fridge runs on electricity — which gives off HEAT. So how does plugging in something hot make something cold?
Concepts you just met
Heat PumpRefrigerant CycleEvaporationCompression