Mon Prof Augmenté
Heat in a Kitchen
Age 13 · Daily Life
Heat can move into food in three main ways. A hot pan, moving water, and a glowing grill each show a different path.
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Age 13: open this week
Browse Age 13
In the picture
- The pan base on the hob: heat moves directly from the hot hob into the pan and then into the egg.
- The bubbling water in the pot: hot water rises in the middle and cooler water sinks at the sides, carrying heat through the pot.
- The glowing grill element: it sends invisible waves down to the bread, warming it without touching it.
Examples
- A metal spoon left in hot soup becomes warm at the handle.
- Sunlight warms your face from far away, and a room heater warms the air that circulates around a room.
Key takeaways
- Heat always moves from hotter places to cooler places.
- Conduction needs contact, convection needs a moving fluid, and radiation can travel as waves.
Quiz: Heat in a Kitchen (Age 13)
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According to the card, what does conduction need in order to heat food?
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In which direction does heat move?
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Which cooking method warms food with invisible waves without touching it?
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