IX. Match the word combinations in a, b and c to make up sentences.

A B C

1.The properties of wood 1. result in 1. is called elasticity

2.The overall density 2. are easier 2. permeability of wood

3. High temperatures and 3. of thermal properties 3. that of softwoods

moisture content is very important

4. Hardwoods 4. determine 4. wood fibre direction

5. A property of wood 5. is determined by 5. the conductivity of wood

6. The knowledge 6. is higher than 6. treatment by chemicals is

7. The structure of the wood 7. influences done

cells

8. Density and moisture 8. is higher if 7. when drying or pressing

content wood material

9. Plasticity of hardwoods 9. are also influenced by 8. to bend than softwoods

10. Resistance to decay and 10. to recover its size and 9. low wood strength

insects shape 10. the percentage of

earlywood and

latewood in each growth

ring

X. Are the following statements true or false? Correct the false sentences.

1. Permeability is the property of wood to pass heat through it.

2. Thermal conductivity is influenced by wood density and moisture content.

3. Plasticity of wood is the ability to recover its shape after the loading is removed.

4. Strength is the ability of wood to resist changes in size or shape without failure.

5. The terms “tensile strength” and “compression strength” have the same meaning.

6. The density of wood is different in earlywood and latewood.

7. High temperatures and moisture content affect greatly the wood strength.

8. The velocity of sound is different along the longitudinal and radial directions in

wood.

9. Plasticity doesn’t depend on wood species: it is the same in softwoods and

hardwoods.

10. The amount of shrinkage depends on the amount of moisture which is lost below

the fibre saturation point.

XI. Put the words in the right order to make questions. Work in pairs: let your

partner answer the questions.

1. anisotropic, is, why, wood, material, called?

2. directions, shrink, which, does, in, wood, more?

3. determined, is, of a wood, how, density, piece?

4. factors, depend, what, mechanical, on, do, of wood, properties?

5. important to, why, wood processing, is, conductivity, thermal, the knowledge of?

6. property, is important to, what, furniture, of wood, making, bentwood?

7. sound velocity, be used, can, to determine, how, strength, mechanical, of the wood?

8. shrinkage, when, of wood, occur, does?

9. properties, what, technological, are, of wood?

10) how, plasticity, different, elasticity, are, and?