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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
Q

Is softwood easy or hard to work with?

A

Easy

26
Q

Give some examples of softwoods

A
  • pine
  • parana pine
  • spruce
  • cedar
27
Q

What is pine?

A

Locally grown softwoods from managed forests

28
Q

What are the properties of pine?

A
  • Inexpensive
  • very little grain marking
  • pale
29
Q

What is pine used for?

A
  • making mounds for vacuum forming

- furniture

30
Q

What is parana pine?

A

Fine even textured softwood available in long wide boards

31
Q

What are the properties of Parana pine?

A
  • fairly heavy
  • prone to twisting
  • tough
32
Q

What are the uses of parana pine?

A
  • Staircases
  • window sills
  • step ladders
33
Q

What is spruce?

A
  • Softwood commonly known as “whitewood”
  • similar colour to pine not as dark
  • grows in Canada and British Isles
34
Q

What are the properties of spruce?

A
  • very tough
  • fairly hard and durable
  • not very stable
35
Q

What can spruce be used for?

A
  • rafters
  • newspapers
  • floor joists
  • roof joists
  • coal pit props
36
Q

What is cedar?

A

Softwood that comes from North America that has a natural chemical protecting it from decay

37
Q

What are the properties of cedar?

A
  • resists rotting and decay very well
  • easily sawed, planed and carved
  • has pleasant odour that keeps moths away
38
Q

What can cedar be used for?

A
  • Closets
  • chest
  • boats
  • pencils
  • telephone poles
39
Q

What is the term ‘man-made board” given to?

A

Wood that has been cut and glued together to form boards or sheets

40
Q

What are the advantages of man-made boards?

A
  • size (up to 1500 mm wide)

- stronger than solid timber

41
Q

What are the disadvantages of man-made boards?

A
  • 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
Q

What is plywood?

A

Made from layers of thin wood glued on to each other

43
Q

What are the properties of plywood?

A
  • extremely strong

- always odd number of layers

44
Q

What can plywood be used for?

A
  • sheds
  • wall panelling
  • flooring
  • furniture
45
Q

What is MDF?

A
  • “medium density fibreboard”

- made from small particles compressed together forming a sheet

46
Q

What are the properties of MDF?

A
  • not as strong as plywood
  • cheaper than plywood
  • very useful
47
Q

What can MDF be used for?

A
  • displaying cabinets
  • wall panels
  • storage units
48
Q

What is chipboard?

A

Chips of wood compressed and glued together

49
Q

What are the properties of chipboard?

A
  • weaker than plywood and MDF

- difficult to cut, join and finish because temds to separate when trying to screw or nail edges

50
Q

What is chipboard used for?

A
  • kitchen tops

- firedoors

Year 9 Tech (6 decks)

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