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When heat transfer occurs between two substances that are touching each other, it is called conduction.
Here's a brief explanation of each term:
1. Conduction: This type of heat transfer happens when two objects at different temperatures come into contact with each other. The heat energy flows from the warmer object to the cooler one until they reach thermal equilibrium. An example of conduction is when you touch a metal spoon that has been sitting in a hot cup of tea, and the spoon feels hot at the handle even though the tea is at the other end.
I hope this explanation helps clarify the concept of heat transfer through conduction. Let me know if you need more information!