QCM : Wood and Bamboo Structural Systems — 8 questions

Questions et réponses du QCM

1. What does the term 'softwood' specifically refer to in wood classification?

Wood from broad-leafed trees with visible pores under a microscope
Wood from deciduous trees used mainly for high-quality furniture and flooring
Wood from trees that grow outward by adding rings, with visible concentric rings in cross-section
Wood from gymnosperm trees, usually with no visible pores, that is generally lighter and less dense

Wood from gymnosperm trees, usually with no visible pores, that is generally lighter and less dense

Explication

Softwood specifically refers to wood from gymnosperm trees, which usually have no visible pores under a microscope and are generally lighter and less dense than hardwoods. The other options describe hardwoods, the growth pattern of exogenous trees, and a general classification based on growth rings, respectively.

2. What property makes wood particularly suitable for lightweight yet durable architectural structures?

High elasticity, allowing it to stretch under load.
High strength-to-weight ratio, providing strength with low weight.
Excellent electrical conductivity.
High thermal expansion rate, enabling easy adjustment.

High strength-to-weight ratio, providing strength with low weight.

Explication

The high strength-to-weight ratio of wood means it can bear significant loads without adding much weight, making it ideal for lightweight, durable structures. Elasticity and thermal expansion are important for other aspects but not the key for this property.

3. Which of the following are examples of endogenous trees according to wood classification?

Bamboo, coconut, palmyrah
Pine, cedar, spruce
Mahogany, oak, maple
Yacal, Guijo, Tanguile

Bamboo, coconut, palmyrah

Explication

Bamboo, coconut, and palmyrah are endogenous trees, which grow by forming layers that penetrate existing fibers. The other options list exogenous trees or species not classified as endogenous, making option 0 the correct answer.

4. Which characteristic of wood contributes to its use in creating curved architectural elements?

High density, providing rigidity.
Flexibility, allowing it to bend under stress.
Color and staining ability.
High combustion temperature.

Flexibility, allowing it to bend under stress.

Explication

Flexibility enables wood to bend without breaking, which is essential for creating curved forms in architecture. Density relates more to strength and weight, not bending capacity.

5. According to Lyons (2010), what property of wood helps slow down the combustion process during a fire?

Wood’s moisture content.
Its ability to form a char layer.
Its natural oils.
High thermal conductivity.

Its ability to form a char layer.

Explication

When exposed to fire, wood forms a char layer that insulates and slows combustion, enhancing its fire resistance. Moisture and oils have different effects on fire behavior.

6. What aspect of wood allows for aesthetic customization through staining and finishing?

Porous structure of wood.
High density.
Low thermal conductivity.
Its natural resistance to pests.

Porous structure of wood.

Explication

The porous nature of wood enables it to absorb stains and finishes, allowing for aesthetic customization. Density and pest resistance are unrelated to staining ability.

7. Why is wood considered to have a desirable natural warmth for interior finishes?

Its insulating properties.
Its inorganic composition.
Its reflective surface.
Its high density.

Its insulating properties.

Explication

Wood’s organic, cellular structure provides natural warmth and insulation, making it comfortable for interior finishes. Its organic nature, not inorganic composition, contributes to this characteristic.

8. Which softwood species is commonly used for construction due to its ease of workability?

Oak.
Pine.
Maple.
Mahogany.

Pine.

Explication

Pine, as a softwood, is known for its ease of shaping and processing, making it popular for construction. Oak and maple are hardwoods, which are generally harder to work with.

Révisez avec les flashcards

Mémorisez les réponses avec 9 flashcards sur Wood and Bamboo Structural Systems.

Wood — natural warmth property?

Enhances comfort and insulation.

Wood — natural insulation property?

Provides warmth and thermal insulation.

Wood classification — growth pattern?

Endogenous grow internally; exogenous grow outward.

Voir les flashcards →

Approfondir avec la fiche

Consultez la fiche de révision complète sur Wood and Bamboo Structural Systems.

Voir la fiche →

Cours similaires

Introduction aux systèmes mécatroniques industriels

Mechatronic Systems Organisation

Chaînes d’énergie et d’information

Combinatoire et dénombrement

Mathématiques

Actions et mouvement

Physique

Gel pour les veines

Crée tes propres QCM

Importe ton cours et l'IA génère des QCM avec corrections en 30 secondes.

Générateur de QCM