What type of building material is typically associated with high thermal mass?

High thermal mass refers to a material's ability to absorb, store, and release heat. This property is especially beneficial in moderating indoor temperatures, as it allows a building to remain cooler during hot days and warmer during cold nights. Concrete and brick are materials well-known for their high thermal mass because they can retain heat effectively.

These materials, when used in building construction, can help reduce the need for heating and cooling by absorbing excess heat during the day and releasing it slowly when temperatures drop. Their density and specific heat capacity make them ideal candidates for maintaining a stable indoor climate, contributing to energy efficiency within the building.

In contrast, wood, steel, and plastic do not possess the same thermal mass characteristics. Wood has a lower thermal mass due to its lighter weight and structure, which can lead to quicker heat loss or gain. Steel, while a strong and durable material, behaves similarly to wood in terms of heat transfer and does not store heat effectively. Plastic lacks the density required for high thermal mass, resulting in minimal benefits in terms of temperature regulation.

Thus, concrete or brick is the correct answer when identifying materials associated with high thermal mass.