Wood Characteristics
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Transcript of Wood Characteristics
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Wood Characteristics
State Practice Exam
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Softwood come from what kind of trees:
Conifers (Needle bearing trees)
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Hardwoods come from what kind of trees:
Deciduous (Leaf bearing trees)
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Which is the advantage of plywood over solid wood?
A.Natural beauty of the wood can be shown
B. It is stronger with the grain
C.Splitting is reducedD.More stable
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When cutting plywood on a table saw, place the good face:
A.UpB.DownC.Away from the
fenceD.Toward the fence
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The term S4S refers to lumber that is:
A.Planed to thicknessB. Jointed both edgesC.Planed both sides and
jointed both edgesD.Planed one side and
jointed both edges
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In cabinetmaking, the term 5/4 refers to a:
A.1” boardB.1 ¼” boardC.1 ½” boardD.2” board
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The FAS grade of hardwood should have at least:
A.100% clear cutB.83 1/3% clear cutC.66 2/3% clear cutD.50% clear cut
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Wood fibers are held together by a natural substance called: Lignin
Growth of the tree occurs in what layer? Cambium
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Most furniture in America is made from:
A.HardwoodB.Softwood
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Walnut is softer than:
A.OakB.PineC.WillowD.Alder
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Good quality cabinetmaking wood should be dried to a moisture content of:
A.6 – 9 percentB.12 – 15 percentC.15 – 18 percentD.20 – 25 percent
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Probably the most difficult wood defect to work with would be a:
A.Cupped boardB.Bowed boardC.Crooked boardD.Twisted board
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Quarter sawn lumber warps less than plain sawn lumber.
A.TrueB.False
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The fastest method to season or dry lumber would be:
A.Air dryingB.Sun dryingC.Pressure dryingD.Kiln drying
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When wood fiber is at the saturation point, it will be about:
A.10% moistureB.20% moistureC.30% moistureD.40% moisture
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The very center of a cross section of a tree is called the:
A.SapwoodB.CenterwoodC.HeartwoodD.Pith
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Shrinkage of wood doesn’t begin until the moisture is below the fiber saturation point.
A.TrueB.False
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Some hardwoods are softer than some softwoods.
A.TrueB.False
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Wood shrinks more in:
A.LengthB.Width
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The best grade of hardwood is:
A.#1 CommonB.SelectC.FASD.Superior
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Trees generally grow faster in the Spring than in the Summer.
A.TrueB.False
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Which wood is highly resistant to decay?
A.CherryB.OakC.Douglas FirD.Redwood
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If you are sanding a project by hand, which direction should you go?A. Sandpaper doesn’t leave marks
so it doesn’t matter which direction.
B. You should never sand by hand.C. Across the grain, which leaves
less obvious marks.D. With the grain, which blends
better.
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Will all wood float in water? Why or why not?
No—All woods are made up of cells with hollow areas in between, however some species are so dense that their specific gravity is greater than 1 and will therefore sink in water.
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Oak is an example of what kind of lumber?A.Hardwood
Pine is an example of what kind of lumber?A.Softwood
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Maple is an example of a closed grain wood.A.TrueB.False
Ash and Oak are examples of open grained wood.A.TrueB.False