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Year 9 Tech > Wood > Flashcards

Wood Flashcards

1
Q

What are the two types of wood?

A
  • softwoods

- hardwoods

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2
Q

What are most hardwoods?

A

Deciduous and drop their leaves in winter

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3
Q

What way do hardwoods grow?

A

Slow growing and grow mainly in warmer climates

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4
Q

What are hardwoods used for?

A

Make expensive furniture

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5
Q

What sort of leaves do deciduous trees have?

A

Broad leaves

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6
Q

What are the seeds of deciduous trees enclosed in?

A

Fruit e.g. Apple, acorn

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7
Q

Give some examples of hard woods

A

Mahogany, beech, ash, birch, elm, oak

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8
Q

What is mahogany?

A

expensive, imported and decorative (hardwood)

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9
Q

What are mahoganys uses?

A

Decorate furniture, doors, window frames and staircases

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10
Q

What are the properties of mahogany?

A
  • strong
  • medium weight
  • difficult to work with
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11
Q

What is beech?

A

Close grained (hardwood)

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12
Q

What are the properties of beech?

A
  • not prone to splitting
  • no taste or odour
  • non~toxic
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13
Q

What are the uses of beech?

A
  • children’s toys
  • kitchen utensils
  • furniture
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14
Q

What is ash?

A

Long grained timber that’s colour varies from creamy white - light brown (hardwood)

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15
Q

What are the properties of Ash?

A
  • tough and flexible
  • good resistance to shock
  • stable timber
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16
Q

What can ash be used for?

A
  • hockey sticks
  • cricket stumps
  • hammer shafts
  • garden tool handles
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17
Q

What is oak?

A

Large tree which bares acorns and has lobed deciduous leaves (hardwood)

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18
Q

What are the properties of oak?

A
  • hard
  • strong
  • durable
  • quite heavy
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19
Q

What can oak be used for?

A
  • kitchen units
  • furniture
  • staircases
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20
Q

What do softwoods have instead of leaves?

A

Needles

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21
Q

What way do softwoods grow?

A

Much faster than hardwoods

22
Q

What are softwoods usually?

A

Evergreen - keep needles all year round

23
Q

Where do softwoods mainly grow?

A

Colder regions of the world

24
Q

What is softwood mainly used for?

A
  • inexpensive furniture

- structures and frames

25
Is softwood easy or hard to work with?
Easy
26
Give some examples of softwoods
- pine - parana pine - spruce - cedar
27
What is pine?
Locally grown softwoods from managed forests
28
What are the properties of pine?
- Inexpensive - very little grain marking - pale
29
What is pine used for?
- making mounds for vacuum forming | - furniture
30
What is parana pine?
Fine even textured softwood available in long wide boards
31
What are the properties of Parana pine?
- fairly heavy - prone to twisting - tough
32
What are the uses of parana pine?
- Staircases - window sills - step ladders
33
What is spruce?
- Softwood commonly known as "whitewood" - similar colour to pine not as dark - grows in Canada and British Isles
34
What are the properties of spruce?
- very tough - fairly hard and durable - not very stable
35
What can spruce be used for?
- rafters - newspapers - floor joists - roof joists - coal pit props
36
What is cedar?
Softwood that comes from North America that has a natural chemical protecting it from decay
37
What are the properties of cedar?
- resists rotting and decay very well - easily sawed, planed and carved - has pleasant odour that keeps moths away
38
What can cedar be used for?
- Closets - chest - boats - pencils - telephone poles
39
What is the term 'man-made board" given to?
Wood that has been cut and glued together to form boards or sheets
40
What are the advantages of man-made boards?
- size (up to 1500 mm wide) | - stronger than solid timber
41
What are the disadvantages of man-made boards?
- prolonged exposure to moisture cusses wood to become weak - difficult to join using wood joints (require special fixings) - tend to split apart as screws or nails go into them
42
What is plywood?
Made from layers of thin wood glued on to each other
43
What are the properties of plywood?
- extremely strong | - always odd number of layers
44
What can plywood be used for?
- sheds - wall panelling - flooring - furniture
45
What is MDF?
- "medium density fibreboard" | - made from small particles compressed together forming a sheet
46
What are the properties of MDF?
- not as strong as plywood - cheaper than plywood - very useful
47
What can MDF be used for?
- displaying cabinets - wall panels - storage units
48
What is chipboard?
Chips of wood compressed and glued together
49
What are the properties of chipboard?
- weaker than plywood and MDF | - difficult to cut, join and finish because temds to separate when trying to screw or nail edges
50
What is chipboard used for?
- kitchen tops | - firedoors

Year 9 Tech (6 decks)

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