Timbers Flashcards
1
Q
What are the three main types of timber ?
A
- hardwoods , softwoods and manufactured boards
2
Q
Where do hardwoods come from ?
A
- from broad-leafed, deciduous trees
3
Q
What is a deciduous tree ?
A
- a tree that grows slowly and as a result the timber obtained from them tends to be hard and dense and heavy.
- also lose their leaves over winter
4
Q
State three types of hardwoods ?
A
- oak
- birch
- teak
5
Q
State three properties of hardwoods ?
A
- dense
- hard
- heavy
6
Q
Explain what hardwoods are used for
A
- comes in many different colours and are generally used for high quality items - furniture - instrument - flooring
7
Q
Where do softwoods come from?
A
- from coniferous trees
8
Q
What is a coniferous tree?
A
- trees that keep their needles all year round
- grow faster than hardwood trees and is usually lighter in colour
9
Q
State three types of softwoods
A
- pine
- cedar
- spruce
10
Q
State three properties of a softwood
A
- flexible
- flammable
- stiff
11
Q
Explain what a manufactured board is
A
- sheets of timber made by gluing either wood fibres or wood layers together
12
Q
Explain why you would use a manufactured board instead of a natural timber
A
- less expensive
- less likely to twist
- readily available in larger sheets
13
Q
Explain why you would use a manufactured board instead of a natural timber
A
- stable and easy to work with as natural timber can twist and warp
14
Q
State three types of manufactured board
A
- MDF
- Plywood
- Chipboard
- Block Board
