Timbers and Man-made Boards

What are the two main types of timbers?

• hardwood and softwood

• oak and pine

• cedar and mahogany

• maple and birch

What are the natural properties of timbers?

• odor, taste, toxicity, electrical conductivity

• hardness, brittleness, transparency, sound absorption

• color, texture, weight, conductivity

• strength, durability, flexibility, thermal insulation

Name one common use of timbers.

What are the properties of man-made boards?

• Man-made boards have low dimensional stability and are not uniform in size and shape.

• Man-made boards are not resistant to warping and splitting and have low strength.

• Man-made boards have high strength, dimensional stability, resistance to warping and splitting, and uniformity in size and shape.

• Man-made boards are weak and prone to warping and splitting.

Give an example of a man-made board.

• glass

• plywood

• cardboard

• concrete

What are the uses of man-made boards?

Which type of timber is more resistant to decay?

• hardwood

• bamboo

• plywood

• softwood

What is the main advantage of using man-made boards?

• They are cheaper than natural wood.

• They have a more natural and aesthetic appearance.

• They are easier to work with and shape.

• They are more durable and resistant to warping and shrinking compared to natural wood.

What is the main disadvantage of using timbers?

• Expensive and difficult to maintain

• Limited lifespan

• Prone to warping and splitting

• Susceptible to rot, decay, and insect infestation

What is the main disadvantage of using man-made boards?

• Not as strong or durable as solid wood

• Prone to warping or swelling

• Difficult to repair or refinish

• More expensive than solid wood