Conductores térmicos

The video tutorial explains how metal conducts heat efficiently due to its free-moving electrons, which transfer thermal energy quickly. It discusses the concept of thermal expansion, where heated atoms vibrate more, causing metals to expand. This principle is applied in structures like railroad tracks to accommodate expansion. Conversely, when metals cool, they contract, a process known as thermal shrinkage. The tutorial also covers how heat is transferred from a hot pan to the surrounding air, leading to cooling and contraction.

Explain how electrons contribute to the thermal conductivity of metal.

What happens to the atoms in a metal when it is heated?

What is thermal expansion and how does it affect metal structures?

How do large metal structures accommodate thermal expansion?

Describe the process that occurs when metal cools down.