* Conduction is the transfer of heat through direct contact between objects or within an object.
* Heat is a form of energy that causes the particles within an object to move.
* Particles in solids, liquids, and gases are always in motion, even if the object appears still. This motion is called kinetic energy.
How conduction works:
1. Heat source: When a heat source, like a hot stovetop, touches a cooler object, the particles in the heat source have a higher kinetic energy (they're vibrating more vigorously).
2. Transfer of energy: These vibrating particles collide with the particles in the cooler object, transferring some of their kinetic energy.
3. Increased vibration: The particles in the cooler object absorb this energy and start vibrating more vigorously themselves.
4. Temperature change: As the particles in the cooler object vibrate more, the object's temperature rises.
Think of it like this: Imagine a line of dominoes. When you knock over the first domino, it transfers its energy to the next domino, which then knocks over the next, and so on. The dominoes themselves don't move far, but the energy travels along the line.
Key takeaway: Conduction is about the transfer of kinetic energy between particles, not the movement of the particles themselves.
