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The Ultimate Plywood Quiz

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Questions and Answers

Which of the following is true about plywood?

It is a type of hardwood plywood.

It was first introduced in the United States in 1865. (correct)

It was invented by Samuel Bentham in 1797.

It is typically made of cedar, Douglas fir, or spruce.

Who invented the rotary lathe?

Alfred Nobel

Immanuel Nobel (correct)

Robert

Samuel Bentham

What is the principal function of the core layers in plywood?

To increase the panel's resistance to bending (correct)

To increase the separation between the outer layers

To increase the panel's resistance to shear stress

To decrease the bending stress in the outermost layers

What are the three main categories of plywood within Europe?

Birch plywood, mixed plywood, and conifer plywoods Signup and view all the answers

Which type of plywood is known for its high planar shear strength and impact resistance, making it suitable for heavy-duty floor and wall structures?

Hardwood plywood Signup and view all the answers

Which type of plywood is made from mixed hardwood species of tropical timber and is superior to softwood plywood in terms of density, strength, evenness of layers, and high quality?

Tropical plywood Signup and view all the answers

Which type of plywood is also known as aircraft plywood and is made from mahogany, spruce, and/or birch using adhesives with increased resistance to heat and humidity?

Aircraft plywood Signup and view all the answers

Which type of plywood is designed for making curved parts and is often glued together in layers to create stiffness and resistance to movement?

Flexible plywood Signup and view all the answers

Which of the following is true about plywood manufacturing?

Plywood is made from layers of wood veneer glued together with adjacent layers having their wood grain rotated up to 90° to one another. Signup and view all the answers

Which of the following benefits is associated with cross-graining in plywood?

It reduces the tendency of wood to split when nailed at the edges. Signup and view all the answers

What is the origin of the word 'ply' in plywood?

It is derived from the French verb plier, meaning 'to fold'. Signup and view all the answers