Answer :
Final answer:
The increase in temperature of the spoon in boiling water occurs through conduction and convection. Conduction transfers heat via direct contact, while convection involves heat moving through the fluid. Thus, conduction and convection are the key methods of heat transfer in this situation.
Explanation:
Types of Heat Transfer in a Boiling Water Scenario
When a metal spoon sits in a pot of boiling water, it becomes warm primarily through two processes: conduction and convection.
Conduction is the transfer of heat through direct contact between materials. In this case, the heat from the boiling water is transferred directly to the spoon as the water molecules collide with the spoon's surface.
Convection refers to the transfer of heat by the movement of fluids. As the water boils, it circulates, causing hot water to rise and cooler water to sink, which further warms the spoon as it is immersed in the hot fluid.
Radiation is not a contributing factor in this scenario, as it involves the transfer of heat through electromagnetic waves and does not require direct contact or a medium, which is not the primary mechanism here.
Therefore, the correct answer is that the spoon's temperature increase is due to convection and conduction.
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