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V. Complete the following sentences choosing the best answer a, b, c or d

according to the text.

1. Decay is caused by …

  1. suitable temperature only

  2. mineral streaks

  3. fungi

  4. the lack of air supply.

2. Cross grain is the deviation of …

  1. wood fibres from a direction parallel to the longitudinal axis of a

piece of wood

  1. the longitudinal axis from knots

  2. fibres from annual rings

  3. a piece of wood from wood fibres.

3. Splits run …

  1. across the rings and appear at the ends of the board

  2. along the length of the board

  3. across the length of the board

  4. across longitudinal curvature of the ends of the board

4. Compression wood which occurs on the under side of a leaning tree of

softwood …

  1. is characterized by numerous holes, narrow annual rings

  2. is not denser and harder than other wood

  3. has low longitudinal shrinkage

  4. is characterized by little contrast between spring and summerwood

5. Pitch pocket …

  1. doesn’t indicate shake

  2. may affect strength

  3. is characteristic of poplar, oak, and birch

  4. contains fungi

6. Discoloured streaks are caused by …

  1. separation of wood along the grain

  2. insect holes

  3. decay

  4. chemical changes in the wood or oxidation.

VI. Fill in the correct word(s) from the list below and find in column B the most

appropriate Ukrainian equivalent.

Well-defined, suitable, shock, wood, irregular, grain,

longitudinal, discoloured, growth, eccentric, low,

pitch, shear , under, cross, compression, rotten, fibres

A B

1. ……… temperature a) руйнування в результаті зрізу або зсуву

2. ………….. grain (2) в) чітко окреслена щілина

3. ………………. side с) низька жорсткість

4. ………. annual rings d) поздовжнє викривлення

5. ………… curvature e) нахил волокон

6. …………... streaks f) аномальний ріст

7. …………. distortion g) нижня частина

8. …………… opening h) удароміцність

9. ……….. resistance i) гнилий сучок

10. ………… knot (2) j) ущільнення деревини (“рогівка”)

11. abnormal ………... k) смоляна кишенька

12. …………. stiffness l) відповідна температура

13. wood …………… m) волокна деревини

14. …………… wood n) ексцентричні річні кільця

15. …………. pocket o) смугастість

16. …………… failure p) деформація, викривлення волокон

деревини

q) завилькуватість

  1. щільний здоровий сучок

VII. Periphrase the underlined words using the words from the list.

Abnormal artificial suitable (2) distortion stiffness surrounding natural the longitudinal axis

1. Fungi need air, food, appropriate temperature, and appropriate

moisture content.

2. Sound knots are as hard as the nearby wood.

3. Insect holes have somewhat similar effect as knots except that no grain

deformation is involved.

4. Compression wood is unusual growth occuring on the under side of

leaning trees and limbs of softwoods.

5. Decay, cross grain, knots, and pitch pockets are examples of innate

defects.

6. Wood defects are classified as natural and acquired.

7. Compression wood has high longitudinal shrinkage, low hardness.

8. Cross grain is the deviation of wood fibers from a direction parallel to

the sides of a piece of wood.