B.F. Bachelor of Forestry Wood Science and Technology 1

Question 1

What is 'specific gravity' of wood and why is it important?

Accepted Answer

The ratio of wood density to the density of water, indicating strength and suitability for end uses

Answer

The moisture content of green wood

Answer

The number of growth rings per inch

Answer

The percentage of heartwood in a log

Question 2

What is 'heartwood' in a tree stem?

Accepted Answer

The inner, non-living core of xylem that no longer conducts water

Answer

The outermost living layer of wood just inside the bark

Answer

The thin layer of cells between bark and wood

Answer

The zone of active cell division in a tree

Question 3

What causes wood to shrink and swell?

Accepted Answer

Changes in moisture content below the fiber saturation point

Answer

Changes in temperature only

Answer

Photosynthetic activity in living cells

Answer

Mechanical stress during tree growth

Question 4

What is 'lumber grading' used for in the wood products industry?

Accepted Answer

Classifying sawn lumber by quality characteristics to determine appropriate end uses

Answer

Determining the species of harvested trees

Answer

Measuring the carbon content of wood

Answer

Setting the price of standing timber in forest auctions

Question 5

Which component of wood is primarily responsible for its structural strength?

Accepted Answer

Cellulose microfibrils

Answer

Lignin only

Answer

Extractives

Answer

Resin canals

Question 6

What is 'kiln drying' used for in wood processing?

Accepted Answer

Using controlled heat and humidity to reduce wood moisture content to desired levels

Answer

Treating wood with preservatives to prevent insect attack

Answer

Removing bark from logs before sawing

Answer

Sorting lumber by species in a mill