ALL ABOUT WOOD

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PROPERTIES, TYPES, FORMS AND DERIVATIVES

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ALL ABOUT WOODVersión en línea PROPERTIES, TYPES, FORMS AND DERIVATIVES por TM poboar 1 Which are the two main substances the wood is made up? Choose one or more answers a trunk b lignin c timber d cellulose 2 What is the natural fibre that forms the walls of the plant cells? Choose one or more answers a wood b lignin c sap d cellulose 3 What substance holds the cellulose together making tree hard and rigid? a cellulose b lignin c cambium d trunk 4 Which are the two types of natural wood depending on where it comes from? a hard and soft b resinous and non-resinous c resinous and deciduous 5 Non-resinous wood Choose one or more answers a comes from desiduous trees b resist bad weather c has a lot of resin d is from teak, aok,, beech, olive... 6 Does resinous wood come from evergreen trees? a TRUE b FALSE 7 The resinous wood is the only one that can be laminated a TRUE b FALSE 8 The most important tree family of the resinous wood is a CYPRESSES b OAK c CONIFER AS PINES OR FIRS 9 Wood is soft and easy to scrath but some woods are harder than other. The darker a wood is, the a softer b harder 10 Is wood a good thermal and electrical insulator? a FALSE b TRUE 11 What is the hygroscopicity of the wood? a The ability of absorbing humidity b the ability of being scratched c the ability of being deformed 12 Which property explain that wood splits easily in the longitudinal direction of the fibres? a density b flexibility c splitability d hardness 13 Which of these are properties of wood? Choose one or more answers a good thermal and electrical insulator b flexibility c high density d good toughness e good sound conductivity f good splitability 14 Why does wood float up in water? a Because of its flexibility b Because of its hygroscopicity c Because of its low density 15 Wood is tough but it not hard because a it is not very resistant to breaking and it is easy to be scrathed b it is very resistant to breaking and it is easy to be scrathed c it is very resistant to breaking and it is not easy to be scrathed 16 What commercial form of wood is? a strips b mouldings or profiles c beams d boards 17 What commercial form of wood is? a boards b beams c panels 18 What commercial form of wood is? Written answer 19 What commercial form of wood is? Written answer 20 What commercial form of wood is? Written answer 21 What commercial form of wood is? Written answer 22 What commercial form of wood is? Written answer 23 What of these are properties of the prefabricated wood from natural wood? Choose one or more answers a Prefabricated wood is more uniform b Prefabricated wood wraps more frequently c Fungicide, insecticide and damp-proofing treatments may be applied to it d Prefabricated wood is more expensive than natural wood e Prefabricated wood is made from wood from trees whose quality is unsuitable for sawing f Prefabricated wood is not available in several finishes 24 Which of these pictures corresponds to plywood? a b c 25 What is the most well-known type of fibreboard? a OAK b MDF c SAP 26 Which are the main cellulose-based wood derivatives? a packaging b paper c cork d cardboard

ALL ABOUT WOODVersión en línea

PROPERTIES, TYPES, FORMS AND DERIVATIVES

por TM poboar

Which are the two main substances the wood is made up?

Choose one or more answers

trunk

lignin

timber

cellulose

What is the natural fibre that forms the walls of the plant cells?

Choose one or more answers

wood

lignin

sap

cellulose

What substance holds the cellulose together making tree hard and rigid?

cellulose

lignin

cambium

trunk

Which are the two types of natural wood depending on where it comes from?

hard and soft

resinous and non-resinous

resinous and deciduous

Non-resinous wood

Choose one or more answers

comes from desiduous trees

resist bad weather

has a lot of resin

is from teak, aok,, beech, olive...

Does resinous wood come from evergreen trees?

TRUE

FALSE

The resinous wood is the only one that can be laminated

TRUE

FALSE

The most important tree family of the resinous wood is

CYPRESSES

OAK

CONIFER AS PINES OR FIRS

Wood is soft and easy to scrath but some woods are harder than other. The darker a wood is, the

softer

harder

Is wood a good thermal and electrical insulator?

FALSE

TRUE

What is the hygroscopicity of the wood?

The ability of absorbing humidity

the ability of being scratched

the ability of being deformed

Which property explain that wood splits easily in the longitudinal direction of the fibres?

density

flexibility

splitability

hardness

Which of these are properties of wood?

Choose one or more answers

good thermal and electrical insulator

flexibility

high density

good toughness

good sound conductivity

good splitability

Why does wood float up in water?

Because of its flexibility

Because of its hygroscopicity

Because of its low density

Wood is tough but it not hard because

it is not very resistant to breaking and it is easy to be scrathed

it is very resistant to breaking and it is easy to be scrathed

it is very resistant to breaking and it is not easy to be scrathed

What commercial form of wood is?

strips

mouldings or profiles

beams

boards

What commercial form of wood is?

boards

beams

panels

What commercial form of wood is?

Written answer

What commercial form of wood is?

Written answer

What commercial form of wood is?

Written answer

What commercial form of wood is?

Written answer

What commercial form of wood is?

Written answer

What of these are properties of the prefabricated wood from natural wood?

Choose one or more answers

Prefabricated wood is more uniform

Prefabricated wood wraps more frequently

Fungicide, insecticide and damp-proofing treatments may be applied to it

Prefabricated wood is more expensive than natural wood

Prefabricated wood is made from wood from trees whose quality is unsuitable for sawing

Prefabricated wood is not available in several finishes

Which of these pictures corresponds to plywood?

What is the most well-known type of fibreboard?

OAK

MDF

SAP

Which are the main cellulose-based wood derivatives?

packaging

paper

cork

cardboard

ALL ABOUT WOOD

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