Test Your Tree Knowledge
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Questions and Answers

Deciduous trees are called ______ in the wood industry

hardwoods

The thin growing layer of a tree is called the ______ layer

cambium

[Blank] is made of the cellulose from wood

Paper

Summerwood is ______, ______, harder, and stronger than springwood

<p>heavier, darker</p> Signup and view all the answers

The strength of a piece of wood can be judged by the percentage of ______ compared to springwood showing in cross section

<p>summerwood</p> Signup and view all the answers

What is the difference between hardwoods and softwoods in the wood industry?

<p>Hardwoods are deciduous trees while softwoods are coniferous trees.</p> Signup and view all the answers

What explains much about the characteristics of lumber?

<p>The way a tree grows explains much about the characteristics of lumber.</p> Signup and view all the answers

What are the two types of fibers in wood and how do they differ?

<p>The two types of fibers in wood are sapwood and heartwood. The sapwood is within the cambium layer and its fibers are active in the life processes of the tree, but they do not grow. The heartwood at the center of the tree consists of dead fibers.</p> Signup and view all the answers

What is the function of the bark in a tree and is it useful as a structural material?

<p>The bark protects the growing cells from insects, but it is useless as a structural material.</p> Signup and view all the answers

What determines the strength of a piece of wood and how can it be judged?

<p>The strength of a piece of wood can be judged by the percentage of summerwood compared to springwood showing in cross section. The strength can also be judged by the unit weight or specific gravity.</p> Signup and view all the answers

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