Thermal conductivity

Thermal conductivity is a property that describes how heat moves through a material. It is like a measure of how fast heat can move from one place to another. Heat moves from a hot place to a cold place, and materials with better thermal conductivity let heat move faster than materials with poor thermal conductivity. Some materials let heat move more quickly than others. For example, metals are good at conducting heat, so they are hot to the touch, while plastic is a bad conductor and stays cooler to the touch.