Physics · Materials Science
Match the following defects in timber with their correct descriptions: 1. Checks — (A) Longitudinal separations in the wood between the annual rings 2. Shakes — (B) Characterised by swelling caused by the growth of layers of sapwood over wounds after the branch has been cut off in an irregular manner 3. Rindgall — (C) Sign of decay appearing in the form of yellow or red tinge or discolouration of overmatured trees 4. Foxiness — (D) Longitudinal crack which is usually normal to the annual rings
- 11 - C, 2 - A, 3 - B, 4 - D
- 21 - D, 2 - C, 3 - B, 4 - A
- 31 - D, 2 - A, 3 - B, 4 - C✓
- 41 - B, 2 - A, 3 - D, 4 - C
Correct answer
1 - D, 2 - A, 3 - B, 4 - C
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