Flashcards
Woods and Boards
Cards in this deck (26)
- 1what are examples of softwoods?include pine, cedar and yew
- 2are there several types of pine? [explain]there are but they're all generally pale with brown streaks
scots pine is fairly strong but has a lot of knots
paranoia pine is more expensive, it's hard and is best used for interior joinery - 3what are four examples of hardwoods?OAK
MAHOGANY
BEECH
ELM - 4where do hardwood grow, which means?usually grown in warm climates and are slow growing, so generally more expensive than softwoods
- 5how is natural timber made?made when softwood or hardwood trees are made into useful bits of solid wood e.g. planks and boards
the tree is felled (cut down) and bark is taken off
then can sliced up in various ways to give different qualities of board - some might warp (bend) less than others - 6what are manufactured boards?PLYWOOD
BLOCKBOARD
CHIPBOARD
MDF - 7what is plywood often used for?building and furniture
- 8how is plywood made, which means what about its strengthit's made up of several layers of softwood or hardwood, glued together with their grain at right angles
this structure make it very strong for its weight and thickness, compared with solid wood - 9what is this?PLYWOOD
- 10blockboard properties, and use?isn't as strong as plywood but it's a cheap substitute
often used for doors - 11how is blockboard made, which means what about its strengthstrips of softwood are glued together side by side and sandwiched between two veneers, these add strength and make the board look nicer
the outer veneers are glued with their grain at right angles to the grain of the inner core, this makes it stronger - 12what is this?BLOCKBOARD
- 13how is chipboard made, what's it's cost and strength, how can it be made stronger and finally what is it used for?mad by compressing wood chips together with glue
it's cheap but not very strong, so usually used with a stronger veneered surface
often used in cheap self assembly furniture - 14what is this?CHIPBOARD
- 15what does MDF stand for?Mediu Density Fibreboard
- 16how is MDF made, whats it's cost what are it's properties, what is it used for?made from even tinier wood particles glued and compressed
it's relatively cheap and has smooth faces that are easy to paint
MDF is often used for shelving units - 17what does applying woodstain do, what colours can you get,,, but?enhances the appearance of it's grain
it's avail in natural colours but also in bright blues, reds etc...
sbuts stains don't usually protect the wood, so you might need to apply varnish afterwards - 18what can oil on wood be used for, tell be about protection of the wood?oil cam be used to maintain the wood's natural appearance
some oil-based finishes also offer protection to wood used outdoors - 19why is paint applied tell me about based paints and a more costly optionpaint is often used to colour and protect wood
emulsion paints are cheap but they are water-based so they don't protect the wood from water
polyurethane paint is more expensive but its waterproof and much tougher - 20what can be used to protect the surface of the wood?polyurethane varnish can be used to seal and protect the surface of the wood, and give it a smooth surface finish
you can uy it clear or in a wide range of colours - 21why might you want to use a clear varnish instead of paint on wood?most hardwoods have an attractive grain
e.g oak furniture is often varnished - 22what is this?MDF
- 23why is it a good idea to reuse and recycle timber?as although wood is sustainable (new trees can be planted) by doing this is saves on the energy that's needed for processing trees into new timber
- 24wood shredded?wood can be shredded and reused to make things like compost, playground flooring or chipboard
- 25what can happen to good quality wood?can be cleaned up and reused, this is called reclaimed wood
- 26what happens to manufactured boards after original use?they can be quite difficult to recycle as they have glue in them, recycling them is a long process and it's quite expensive
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- GCSE RM (SECTION THREE) Flashcards on Woods and Boards , created by Lily Pritchard on 30/04/2016.
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