WorksheetsUnit 5B Timber Sources, Origins and Properties of Timbers
Total questions: 15
Worksheet time: 8mins
What are the two main types of timber finish mentioned in the text?
Rough sawn and planed all round (PAR)
Smooth sawn and rough cut
Polished and varnished
Kiln-dried and air-dried
Which type of timber is often used for exterior tasks?
Rough sawn timber
Planed all round (PAR) timber
Kiln-dried timber
Air-dried timber
What is the main purpose of seasoning timber?
To reduce moisture content
To increase weight
To change color
To make it more flexible
What is the typical moisture content of air-dried timber in the UK?
Around 18%
Below 10%
Above 50%
Around 30%
What is the main reason kiln-dried timber can be sold sooner?
Faster drying process
Heavier weight
More flexible
Higher moisture content
What does kiln-drying do besides reducing moisture content?
Kills bacteria and insects
Increases weight
Changes color
Makes timber more flexible
Why is it cheaper to use veneered boards rather than solid wood planks?
Veneered boards are lighter
Veneered boards use less natural timber
Veneered boards are more colorful
Veneered boards are thicker
Why could the use of manufactured board be considered more sustainable than solid timber?
It uses more resources
It is heavier
It uses recycled materials
It is more expensive
What is the appearance of manufactured boards usually like?
Bright red
Pale brown
Dark black
Shiny silver
What is the main advantage of using the rotary method in veneer production?
Produces the shortest sheets
Produces the longest sheets
Uses less energy
Is more colorful
What is one advantage of manufactured boards?
They are prone to warping and twisting.
They have knots and resin pockets.
They are available in large sheets, very stable.
They require a lot of preparation.
What is a characteristic of hardboard?
Rigid and even strength in all directions.
Flexible in large sheets, even strength.
Stable, tough, relatively heavy.
Contains natural grain veneers.
What is a common use for blockboard?
Picture frame backings.
Construction hoarding.
Furniture, doors, shelving.
Interior and exterior house building.
Why is hardboard commonly used for the backs of wardrobes and drawer bottoms?
It is rigid and even in strength.
It is flexible in large sheets, even strength.
It is stable, tough, and heavy.
It is easily damaged by water.
What is the main focus of Greenpeace regarding timber?
Promoting deforestation
Promoting sustainable use and production
Increasing timber prices
Reducing timber quality
