Lumber Characteristics Quiz

What is a feature of Douglas Fir lumber?

• Hard and dense

• Resistant to rot and decay

• Easily nailed, screwed, or glued

• Grain is straight, fine, and smooth

Which lumber type is known for being resistant to rot and decay?

• Oak

• Pine

• Cedar

• Douglas Fir

Which lumber defect is characterized by slightly discolored ovals or circles?

• Knots

• Pitch pockets

• Checks

• Splits

Which type of warp occurs from end to end along the face of lumber?

• Twist

• Bow

• Cup

• Crook

What is the term for a warp from end to end along the edge of lumber?

• Crook

• Bow

• Twist

• Cup

Which product is known for having thin layers of wood glued together?

• Pressboard

• Oriented Strand Board

• Plywood

• Metal sheets

What process is used to make Pressboard?

• Gluing thin layers of wood

• Joining wood fibers under heat and pressure

• Stacking wood shavings

• Melting metal

What is the significance of the 'd' in nail sizes?

• It indicates the diameter

• It represents the length

• It is a historical term for penny

• It shows the weight

What is the function of adhesives in woodworking?

• To create holes

• To bond materials

• To split wood

• To paint surfaces

What is the purpose of the spiral threads on screws?

• To make the screw heavier

• To allow the screw to be twisted into material

• To make the screw more colorful

• To make the screw float