SC-1463
Conduction
Lower Sec Science · Secondary 2 · Medium · Conduction
The walls of a cooler box are filled with foam that traps many tiny air pockets. Using the idea of conduction, why does this help keep drinks inside cold for a longer time?
- The trapped air is a poor conductor of heat, so less heat is conducted into the box.
- The foam is a good conductor of heat, so heat is quickly carried away from the box.
- The trapped air is a good conductor of heat, so cold air can flow out easily.
- The foam reflects all infrared radiation, so no heat can enter by any process.
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