Materials that have very low thermal energy and resistance are called thermal conductors.

Here's why:

* Thermal energy: This refers to the internal energy of a substance due to the random motion of its molecules.

* Thermal resistance: This is a measure of how well a material resists the flow of heat.

Good thermal conductors have a low resistance to heat flow, meaning heat energy can easily travel through them. They allow thermal energy to pass through them quickly and easily.

Examples of good thermal conductors include:

* Metals: Copper, aluminum, silver, and gold are excellent conductors of heat.

* Diamond: A very good thermal conductor.

* Graphite: A good thermal conductor, especially along its layers.

Note: The opposite of a thermal conductor is a thermal insulator. Thermal insulators resist the flow of heat.