WOOD

Question 1

the tough, fibrous cellular substance that makes up most of the stems and branches of trees beneath the bark

Answer 1

wood

Question 2

the tough external covering of a woody stem, branch or root, composed of a living inner layer called phloem and an outer bark of corky, dead tissue

Answer 2

bark

Question 3

a layer of tissue that carries food from the leaves to the growing parts of a tree

Answer 3

phloem/inner bark

Question 4

a thin layer of reproductive tissue between the phloem and xylem on the inside of stems, branches and roots

Answer 4

cambium

Question 5

the soft, central core about which first growth takes place in a newly formed stem

Answer 5

pith

Question 6

the wood from a conifer. These are used for general construction; almost always light

Answer 6

softwood

Question 7

the wood from a broad leaved flowering tree such as cherry etc; usually darker in color, denser and used for flooring, stairs, paneling, furniture and interior trim

Answer 7

hardwood

Question 8

the younger, softer, living portion of wood between cambium and heartwood; usually in lighter color; more permeable and less durable

Answer 8

sapwood

Question 9

the older, harder, inactive core of tree, usually darker, denser and more durable than the surrounding sapwood

Answer 9

heartwood

Question 10

properties of wood

Answer 10

hardness
flexibility
strength
durability

Question 11

measured by the compression which a piece undergoes when a weight is applied

Answer 11

hardness

Question 12

amount a piece will bend before breaking

Answer 12

flexibility

Question 13

to the grain

Answer 13

strength

Question 14

the relative value/lifespan of wood

Answer 14

durability

Question 15

wood suitable for use as a building material

Answer 15

timber

Question 16

defects of lumber

Answer 16

decay
checks
knots
pitch pockets
wane

Question 17

caused by the attacked of fungi

Answer 17

decay

Question 18

cracks or lengthwise separation across annual rings of growth

Answer 18

checks

Question 19

irregular growths in the body, which interrupts, smooth curve

Answer 19

knots

Question 20

well-refined openings between annual rings containing solid or liquid pitch

Answer 20

pitch pockets

Question 21

is the lack of wood on the edge or corner of a piece

Answer 21

wane

Question 22

the timber product manufactured by sawing, resawing, passing lengthwise through a planing machine, cross-cutting to length, and grading

Answer 22

lumber

Question 23

annual rings run approximately a right angle to the face

Answer 23

edge grain

Question 24

when the annual rings run more or less parallel to the surface

Answer 24

flat grain

Question 25

when the annual rings are at about 45 degrees to the face

Answer 25

angle grain

Question 26

seasoning of lumber

Answer 26

air drying kiln drying

Question 27

lumper is strip piled at a slope on a solid foundation. this allows air to circulate around every piece while the sloping allows water to runs off quickly

Answer 27

air drying

Question 28

more expensive lumber which is requiredd for more refined uses so as wood will not move. this is done in an airtight structure scientifically heated by steam pipes in which the lumber is artificially dried to the correct moisture content

Answer 28

kiln drying

Question 29

made of an odd number veneer sheets glued together with the grains running at right angle to each other

Answer 29

plywood

Question 30

different types of plywood

Answer 30

soft plywood hardwood plywood exterior or marine plywood

Question 32

plywood, the most common for structural use

Answer 32

soft plywood

Question 33

plywood, are used for paneling and finishing where usually on one face is hard finished

Answer 33

hardwood plywood

Question 34

made for external use;

Answer 34

exterior or marine plywood

Question 35

made from wood chips, which are exploded, into fibers under stream of high pressure

Answer 35

hardboard

Question 36

manufactures from wood chips, curls, fibers, flakes, stands, shaving, slivers etc, bound together and pressed into sheets and other molded shaped

Answer 36

particle board