197878
Descrição
Mapa Mental por ClareArmstrong, atualizado more than 1 year ago
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Criado por ClareArmstrong
mais de 10 anos atrás
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Timber
- How do trees benefit us?
- Make oxygen
- Roots protect the soil from being
eroded by wind and rain
- Control the climate – e.g global warming,
they help the carbon dioxide from the
atmosphere
- They beautify our environment
- They are a source of food (such as
fruit and nuts) for people and animals
- They provide a wide range of timber products
that we use in our homes, offices and factories
- Make oxygen
- What are the two groups of trees
- Hardwood
- pored wood
- pored wood
- Softwood
- non-pored wood
- non-pored wood
- Hardwood
- Properties
- Colour
- Grain
- Figure
- Hardness
- Strength
- Toughness
- Durability
- Colour
- Finishing types for timber
- planed
- dressed
- planed
- Main timber products
- sawn
timbers
- veneers and
plywoods
- particle board and
fibreboard
- round
timbers
- wood pulp
- sawn
timbers
- Veneer and plywood
- logs are made by peeling and slicing
- logs are made by peeling and slicing
- particle board and fibreboard
- logs are cut and
chipped from the
wasted parts of the
trees
- logs are cut and
chipped from the
wasted parts of the
trees
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