SQA National 5 Design and Manufacture Practice Exam

The nature of oak wood is significantly influenced by its properties over time, particularly in terms of hardness. As oak ages, it actually undergoes a process that can result in an increase in density and hardness. This means that over the years, oak wood can become harder, making it more durable and resilient to wear and tear. This characteristic is often sought after for long-lasting furniture and flooring products.

The gaining of hardness can be attributed to the natural oils and tannins in the wood, which contribute to its preservation and strength as it cures and dries over the years. This enhancement of oak's structural integrity is one reason it's a popular choice in high-quality woodworking and construction.

The other characteristics, such as the possibility of losing strength, becoming softer, or fading in color, do not accurately represent the common qualities of oak wood over time. Instead, oak is typically seen to maintain its strength, improve its durability, and even develop a richer color patina rather than fade significantly.