Wood Finishing and Material Properties Quiz
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Questions and Answers

What is a key property of varnish?

  • Natural high-quality finish
  • Frequent reapplication needed
  • Water-resistant and glossy (correct)
  • Rubbed in along the grain

Wax requires infrequent reapplication to maintain its protective qualities.

False (B)

Which of the following properties best describes Acrylic?

  • Stiff and brittle (correct)
  • Chemical-resistant
  • Durable and heat-resistant
  • Soft and flexible

How should varnish be applied?

<p>With a brush, in the direction of the grain.</p> Signup and view all the answers

Oil is applied with a clean ______, rubbing it into the wood along the grain.

<p>cloth</p> Signup and view all the answers

Thermoplastics can withstand high temperatures without losing their shape.

<p>False (B)</p> Signup and view all the answers

Match the wood finishes with their properties:

<p>Varnish = Infrequent application required Wax = Natural finish with a high sheen Oil = Enhances natural finish, reasonably durable</p> Signup and view all the answers

What is the primary use of low-density polythene (LDPE)?

<p>Bags and plastic bottles</p> Signup and view all the answers

Nylon is known for its _____ and durability, making it suitable for use in clothing and ropes.

<p>hard-wearing</p> Signup and view all the answers

Match the following plastics with their respective uses:

<p>Acrylic = Good substitute for glass ABS = Toys and kitchenware LDPE = Bags and plastic bottles Nylon = Gears and bearings</p> Signup and view all the answers

Which of the following wood types is known for being very light and durable?

<p>Cedar (A)</p> Signup and view all the answers

MDF is made from solid wood pieces glued together.

<p>False (B)</p> Signup and view all the answers

What is the primary use of plywood?

<p>Furniture, construction, and joinery.</p> Signup and view all the answers

Blockboard is known for its good _____ capabilities.

<p>load-bearing</p> Signup and view all the answers

Match each manufactured board to its properties:

<p>MDF = High strength, easily machined Plywood = Very strong and stable Chipboard = Strength depends on density Hardboard = Very weak and brittle</p> Signup and view all the answers

What is a disadvantage of hardboard?

<p>Almost like cardboard and brittle (A)</p> Signup and view all the answers

Beech wood can be steam-bent for various applications.

<p>True (A)</p> Signup and view all the answers

Name one application where chipboard is commonly used.

<p>Kitchen cabinets or worktops</p> Signup and view all the answers

What is a primary use of polystyrene?

<p>Food packaging (B)</p> Signup and view all the answers

Thermosetting plastics can be reshaped and softened upon reheating.

<p>False (B)</p> Signup and view all the answers

Name one property of high-density polythene (HDPE).

<p>Durable</p> Signup and view all the answers

Polypropylene is known for being ______ and chemical resistant.

<p>light</p> Signup and view all the answers

Match the plastics with their primary properties:

<p>Polystyrene = Light and stiff HDPE = Durable and tough Polypropylene = Light and rigid Thermosetting Plastics = Withstands high temperatures</p> Signup and view all the answers

Which wood finish is typically applied using a spray for the best possible finish?

<p>Lacquer (D)</p> Signup and view all the answers

Paint is primarily used to enhance the natural grain of wood.

<p>False (B)</p> Signup and view all the answers

What is one property of stain as a wood finish?

<p>Not very durable or protective</p> Signup and view all the answers

Lacquer provides a glossy clear finish that enhances the __________ qualities of the wood.

<p>natural</p> Signup and view all the answers

Match the following wood finishes with their characteristics:

<p>Stain = Adds colour but requires further finishing Paint = Hides natural grain and provides durability Lacquer = Glossy and hard-wearing clear finish Varnish = Similar application as paint and offers protective coat</p> Signup and view all the answers

Which type of wood is known for being knot-free and very durable, commonly used in high-quality fencing?

<p>Cedar (A)</p> Signup and view all the answers

Red pine is known for its durability and does not require protection during construction.

<p>False (B)</p> Signup and view all the answers

What is the primary use of mahogany wood?

<p>High-quality furniture, shop fittings, panelling, and veneers.</p> Signup and view all the answers

___ pine is characterized by a straight grain but is quite knotty and is typically available at a low cost.

<p>Scots</p> Signup and view all the answers

Match the wood type with its corresponding property:

<p>Oak = Hard and tough, durable Teak = Coarse uneven texture, very expensive Ash = Flexible and tough, bends well Beech = Hard and strong, tends to warp</p> Signup and view all the answers

Which wood is characterized by being light, strong, and resistant to splitting but is not very durable?

<p>Spruce (A)</p> Signup and view all the answers

All hardwoods are more expensive than softwoods.

<p>False (B)</p> Signup and view all the answers

Name one common use for MDF (medium-density fibreboard).

<p>Furniture, construction, or joinery.</p> Signup and view all the answers

Flashcards

MDF

Medium-density fiberboard, made by gluing and compressing sawdust.

Plywood

A strong, stable board made by gluing thin wood sheets together with different grain directions for maximum strength.

Blockboard

A strong, heavy board made of timber strips with veneers.

Chipboard

A board made by mixing wood chips and binding agents. Its strength depends on the density of the chips.

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Hardboard

A low-cost, weak board made of compressed wood fibers.

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Cedar

A light, durable, soft hardwood.

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Beech

A hard, strong hardwood, good for furniture and toys.

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Teak

A very expensive, durable hardwood used for exterior joinery.

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Thermoplastic

A type of plastic that softens when heated and returns to its original shape when cooled.

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Plastic memory

The property of thermoplastics to return to their original shape when heated and cooled.

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Acrylic

A type of thermoplastic known for its durability, strength, and ability to be translucent or opaque.

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Varnish application

Applied with a brush, in the direction of the grain, with multiple coats. Each previous coat needs sanding.

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Varnish properties

Water-resistant, glossy, enhances grain, and can alter wood color. Durable and long-lasting, needs infrequent reapplication.

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Wax application

Apply sanding wood sealant first. Rub wax into wood with a cloth.

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Wax properties

High sheen, enhances natural wood color. Needs frequent reapplication to maintain protection.

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Oil application

Applied with a clean cloth, rubbed into the wood along the grain.

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Stain Application

Applied with brushes or cloths. Can be followed by varnish, wax, or lacquer.

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Stain Properties

Colors wood, can make it look like a more expensive wood. Not very durable or protective.

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Paint Application

Applied the same way as varnish, using a brush.

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Paint Properties

Colors wood and often hides the natural grain. Best used on manufactured boards.

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Lacquer Application

Brush application is possible, but spraying is best.

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Softwood

A type of wood from coniferous trees, typically less dense and more flexible than hardwood.

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Scots Pine

A softwood known for its straight grain, knots, and affordability.

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Red Pine

A softwood with a reddish hue, good strength, and requires protection.

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Spruce

A softwood known for its strength and resistance to splitting.

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MDF (Medium-density Fiberboard)

A wood-based panel made by gluing and compressing sawdust particles, known for its strength and workability.

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Polystyrene

A type of plastic known for being lightweight, stiff, and water-resistant. It is commonly used in food packaging, containers, games, DVD cases, and protective packaging.

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Polypropylene

A lightweight and rigid plastic with good chemical resistance, often used in films, medical equipment, ropes, and kitchenware.

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Thermosetting Plastics

Plastics that do not melt or return to their original shape when heated. They offer excellent heat resistance and durability, often used in products exposed to extreme conditions.

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How are Thermosetting Plastics Different from Thermoplastics?

Thermosetting plastics do not soften or melt when reheated, unlike thermoplastics. They are chosen for their high heat resistance and stability, making them ideal for applications exposed to extreme temperatures, chemicals, and wear.

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Study Notes

Wood Types

  • Softwoods are straight-grained, but knotty, and quite strong, and easy to work. White/brown in colour.
  • Hardwoods are light brown, pinkish brown, hard, tough, heavy and durable. Gets harder with age.
  • Cedar is straight-grained and knot- free. Very light and durable. Quite soft.
  • Spruce is quite strong with few knots. Resistant to splitting, but not durable.
  • Red pine is straight-grained, but knotty, quite strong and easy to work. Red/orange in colour.
  • Oak is light brown, pinkish brown, hard, tough, heavy and durable. Gets harder with age.
  • Beech is mid-brown colour, hard, strong, tough, tends to warp but bends well. Can be steam-bent.
  • Ash is light in colour, flexible, tough, bends well and varnishes well.
  • Mahogany is red/brown colour, medium in colour and age.
  • Teak is straight or wavy-grained. Coarse uneven texture with oily feel. Golden to darker brown. Very expensive.

Manufactured Boards

  • Plywood is very strong, stable and easy to machine/work.
  • MDF (medium-density fibreboard) is high strength, easily machined, shaped, and paints well.
  • Chipboard is very strong, heavy, rigid and good load-bearing capabilities. Density of wood is dependent on chip size. Almost like hardboard. Very weak and brittle.
  • Blockboard is very strong, heavy, and strength is dependent on chip particle size.
  • Hardboard is made from gluing and compressing wood fibre.

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Description

Test your knowledge on wood finishes and properties of various materials in this engaging quiz. From varnish applications to the characteristics of different plastics, challenge yourself with a variety of questions. Perfect for students studying materials science or woodworking.

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