Which metal is measured by ounces per square foot and has a warm appearance?

• A. Aluminum
• B. Copper
• C. Lead
• D. Tin

Answer: (B)

Ounces per square foot is a common way to specify sheet copper because its strength, stiffness, and finishing characteristics are closely tied to thickness, and copper has long been sold and used in this weight-per-area way, especially for roofing, gutters, and decorative sheets. More ounces per square foot mean a thicker, stronger sheet, which also affects its handling and appearance. Copper’s warm, reddish-brown color is distinctive and attractive, giving it that characteristic warm appearance. Other metals are usually described by thickness in inches or gauge rather than by weight per area.