Natural Defects (Junior Cert Wood Technology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What causes natural defects in wood?
What causes natural defects in wood?
Tree growth & internal pressures
What are shakes in wood?
What are shakes in wood?
Splits or cracks forming from tensions
Where do heart shakes occur in a tree?
Where do heart shakes occur in a tree?
At the tree's centre
When do heart shakes typically appear?
When do heart shakes typically appear?
After cutting releases pressures
How do knots form in timber?
How do knots form in timber?
Where branches grow from the trunk
What shape do knots typically appear as?
What shape do knots typically appear as?
Circular areas
What effect can knots have on timber?
What effect can knots have on timber?
Lessen strength but may be decorative
What are pitch pockets?
What are pitch pockets?
Resin build-ups
How do shakes & many knots affect timber structurally?
How do shakes & many knots affect timber structurally?
Weaken it, less suitable for building
What characteristic does Scots Pine often show?
What characteristic does Scots Pine often show?
Many knots