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Is water boiling in a kettle conduction convection or radiation?
Water boiling in a kettle is primarily due to conduction, as heat is transferred from the heating element to the water through direct contact. Convection also plays a role as the hot water rises and the cooler water sinks in a natural circulation pattern. Radiation is minimal in this scenario.
Is a kettle an example of convection?
Yes, a kettle is an example of convection. When the water is heated at the bottom of the kettle, it becomes less dense and rises to the top, while cooler water flows in to replace it. This creates a convection current that helps evenly distribute the heat and boil the water.
What would happen if a kettle is filled to the max while the kettle is boiling?
If a kettle is overfilled while boiling, the boiling water can overflow, causing a mess and potentially a safety hazard. It is best to ensure there is enough space in a kettle to accommodate the water expanding as it boils.
How does convection work in a kettle?
In a kettle, convection works by heating water at the bottom of the kettle. As the water gets hot, it becomes less dense and rises to the top, displacing the cooler water. This creates a circular flow of water as hotter water rises and cooler water sinks, leading to even heating of the entire volume of water in the kettle.
What type of heat transfer is a boiling kettle on a stove an example of radiation?
No, boiling water in a kettle on a stove is an example of conduction - the heat from the stove directly transfers to the kettle, heating the water inside.
