Summary of Properties of Materials (Wood)
Materials are substances from which other things can be made. Basically, they can be classified into two: metallic and non-metallic.
Wood is the hard-fibrous material that forms the main substance of the trunk or branches of a tree or shrub, used for fuel or timber.
A tree is made up of different parts which are the leaves, branches, stem or trunk, fruit or seed, and root.
The structure of wood simply means the cross section (inner features) of the trunk of a tree, which are Bark, Cambium layer, Annual growth, Sap wood, Hearthwood and Pith.
Wood is classified into hardwood and softwood and the difference between them have been fully discussed.
Wood can also be identified by their colours as seen in this chapter.
You are viewing an excerpt of this lesson. Subscribing to the subject will give you access to the following:
- The complete lesson note and evaluation questions for this topic
- The complete lessons for the subject and class (First Term, Second Term & Third Term)
- Media-rich, interactive and gamified content
- End-of-lesson objective questions with detailed explanations to force mastery of content
- Simulated termly preparatory exams
- Discussion boards on all lessons and subjects
- Guaranteed learning
- Win great prizes for topping the Primacy Ebooks