topic 1.1 Flashcards
(21 cards)
What are the two main types of wood?
Hardwoods and Softwoods
Hardwoods come from deciduous trees, while softwoods come from coniferous trees.
What is a characteristic of hardwoods?
Generally denser, stronger, and more durable
Hardwoods are derived from slower-growing deciduous trees.
Name an example of a hardwood and its characteristic.
Oak: Strong, hard, durable, attractive grain
Oak is also resistant to fungal attack.
What is a characteristic of softwoods?
Generally lighter, softer, easier to work, less expensive
Softwoods come from fast-growing evergreen trees.
Name an example of a softwood and its use.
Pine: Used for furniture and construction
Pine is light, soft, and has knots present.
What are manufactured boards made from?
Bonding wood fibers, veneers, or particles with adhesives
Examples include plywood, MDF, chipboard, and blockboard.
What is plywood?
Layers of veneer glued at right angles, strong and stable
Plywood is commonly used in construction and furniture.
What does seasoning wood involve?
Drying wood to reduce moisture content
This process helps avoid warping, splitting, or shrinking.
What is air drying?
Wood is stacked and dried naturally in air
This is a slower method of seasoning compared to kiln drying.
What is kiln drying?
A faster method that uses controlled heat and humidity
Kiln drying reduces moisture content more rapidly than air drying.
What is the purpose of treating wood?
Protecting wood from insects, fungi, and weather
Treatments include preservatives, paints, varnishes, and oils.
What common uses does oak have?
Furniture, flooring, boat building
Oak’s durability makes it suitable for various applications.
Fill in the blank: Softwoods are generally ______.
easier to work
This makes softwoods a popular choice for many construction projects.
True or False: Hardwoods are usually less durable than softwoods.
False
Hardwoods are generally stronger and more durable.
What is the significance of grain and texture in hardwoods?
Hardwoods have more complex grain patterns
This affects their aesthetic appeal, such as attractive grains in mahogany.
What is MDF and its characteristic?
Medium Density Fiberboard: Made from wood fibers, smooth surface
MDF is easy to machine and used in indoor furniture.
What is a property of wood related to moisture content?
Woods absorb and release moisture, causing swelling or shrinkage
Timber must be seasoned to reduce moisture-related issues.
What is an example of a use for cedar?
Outdoor furniture, sheds, closets
Cedar is durable and resistant to moisture and insects.
Name a use for beech wood.
Chairs, tool handles, toys
Beech is known for its toughness and close grain.
What is the primary characteristic of chipboard?
Made from wood chips and resin, cheaper but weaker
Chipboard is commonly used in flat-pack furniture.
What is the relationship between wood density and strength?
Hardwoods are usually denser than softwoods
Density contributes to the overall strength of the wood.
