Fiberglass is composed of which of the following materials?

Fiberglass is primarily composed of glass filaments, which are very thin strands of glass. These filaments are woven together to create a mesh or mat, which can be combined with resins to create a composite material. This process gives fiberglass its strong yet lightweight characteristics, making it an ideal material used in a variety of applications, including boats, automotive parts, and insulation.

In contrast, the other materials mentioned do not constitute fiberglass. Wood fragments are organic and used in different contexts, such as in particleboard or composite wood products. Metal fibers are used for different applications involving conductivity or structural reinforcement, but they do not describe the composition of fiberglass. Lastly, plastic strands refer to synthetic materials that are not part of fiberglass’s structure. Therefore, glass filaments accurately describe the essential components that make up fiberglass.