Timbers

Question 1

Which timber comes from deciduous trees?
& give 2 features of them

Answer 1

Hardwoods
Trees grow slowly
thick trunks with branches

Question 2

State 3 properties of hardwoods

Answer 2

close grain
denser & heavier than softwoods
easy to shape

Question 3

Name 4 hardwoods

Answer 3

Oak
Mahogany
Beech
Balsa

Question 4

Give 5 properties of oak

Answer 4

heavy, hard, tough
open grain
attractive appearance

Question 5

Why is oak good for outdoor use?

Answer 5

It’s durable

Question 6

State 4 end uses of oak

Answer 6

garden furniture, doors, floors, high end furniture

Question 7

State 4 properties of mahogany

Answer 7

dark coloured, close grained, available in wide planks, polishes well

Question 8

State 4 end uses of mahogany

Answer 8

furniture, shop fittings, boat buildings, doors

Question 9

Give 5 properties of beech

Answer 9

tough, hard, close&straight grain, hardwearing, prone to warping

Question 10

State 3 end uses of beech

Answer 10

furniture, toys, wooden tools

Question 11

State 4 properties of balsa

Answer 11

soft, lightweight, coarse&open grain, easy to sand/glue/paint

Question 12

State 4 end uses of balsa

Answer 12

model making, packing cases, surfboards, fishing floats

Question 13

State 2 hardwoods with a close grain and 2 with an open grain

Answer 13

Open - oak, balsa
Close - beech, mahogany

Question 14

Which timber comes from coniferous trees?
& give 4 features of them

Answer 14

Softwoods
Coniferous - evergreen (have needles instead of leaves), grow faster than hardwood trees, grow tall&straight, softwood=more knots than hardwood

Question 15

Name 2 types of softwood

Answer 15

Pine
Cedar

Question 16

State 1 property for both pine and cedar (softwoods)

Answer 16

both have a straight grain

Question 17

Give 5 properties of pine

Answer 17

most widely available natural timber, cheap, easy to cut/shape, has knots along wood grain - weakens strength but gives attractive appearance

Question 18

State 4 end uses of pine

Answer 18

interior construction work, boxes/crates, flooring, paper (pulpwood)

Question 19

Give 5 properties of cedar

Answer 19

lightweight, soft, knot free, durable, resistant to rot/weather/insect attack

Question 20

State 4 end uses of cedar

Answer 20

outside joinery, building cladding, bathroom&kitchen furniture wall panels

Question 21

Which boards can be made from both hardwood and softwood?

Answer 21

Manufactured boards

Question 22

How are manufactured boards made?

Answer 22

by gluing and compressing wood fibres/layers together

Question 23

Features of manufactured boards (3)

Answer 23

• large sheets
• easy to work with
• cheaper than natural wood

Question 24

Name 2 types of manufactured boards

Answer 24

Plywood
MDF

Question 25

How is plywood made?

Answer 25

By gluing thin layers of timber with alternating direction grain

Question 26

Why is plywood strong and tough?

Answer 26

Due to its layered construction - high strength to weight ratio

Question 27

State 3 properties of plywood

Answer 27

easy to cut/shape splinters easily stable under changes in temperature and moisture

Question 28

State 2 uses of plywood

Answer 28

panelling (building construction), furniture making

Question 29

How is MDF produced?

Answer 29

By gluing and compressing wood fibres together into sheets

Question 30

State 6 properties of MDF

Answer 30

smooth, even surface BUT chips/damages easily, easy to cut/shape/paint/glue poor moisture resistance degrades quickly when wet

Question 31

State 3 uses of MDF

Answer 31

cheap, flat-pack furniture, interiour panelling & doors