Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

DT GCSE > SA.6 Materials & Working Properties > Flashcards

SA.6 Materials & Working Properties Flashcards

1
Q

Physical properties

A

Of any material can be measured in their natural state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Phys: density

A

The mass per unit volume of any material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Phys: Fusibility

A

Ability of a material to be converted from solid to liquid by heat & combined w another mat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Working properties

A

Describes how a material respons when manipulated or worked

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Working: ductility

A

Ability opto be stretched or drawn apart w/o breaking

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Working: elasticity

A

Ability to return to og shape after stretching or compression

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Working: hardness

A

Ability to withstand impact, wear, abrasion & indentation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Working: malleability

A

Ability to be bent & shaped w/o cracking

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Working: strength

A

Ability to withstand forces sa pressure, compression, tension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Working: toughness

A

Ability to absorb shock w/o fracturing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is paper measured in

A

Weight in grams per square metre (GSM)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Paper: Layout

A

Medium opacity sheet w a smooth finish
Uses: sketch & design work

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Paper: Tracing

A

Off white, low opacity sheet
Uses: copying overlays, tracing drawings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Paper: Catridge

A

Thick white paper w textured surface
Uses: sketching watercolours, ink drawings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Paper: Bleed proof

A

Thick, coated paper that prevents inks or marker pens bleeding
Uses: high quality illustrations w vibrant colours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Paper: Grid

A

White paper w a printed grid of squares. Isometric lines or other patterns
Uses: scale drawings, scientific diagrams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is card & board measure in

A

Microns

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Card & board: Corrugated card

A

2 layers of lightweight card containing a fluted layer for strength
Uses: packaging for protection, insulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Card & boards: Foil-lined

A

Card coated w aluminium foil in one side. Foil retains heat keeping contents warm, moist
Uses: takeaway containers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Card & board: Duplex

A

2 layers of card bonded tg, often w a white external layer
Uses: food, drink containers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Card & board: Foam core

A

An inner foam core w a paper face. Rigid, stiff
Uses: model making

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Card & board: Ink jet

A

Treated card w smooth finish & bleed proof surfaces
Uses: printing photographs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Card & boards: Solid white

A

High quality card, white smooth finish on both sides
Uses: cards, book covers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Hardwood

A

From deciduous trees
Usually broad-leafed variety that drops leaves in winter
Slow growing
Tighter grains (visible pores, thinner firbre content, dense grain) makes harder to work w

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Ash
HARDWOOD Flexible, tough, shock res Pale brown Uses: sports equip
26
Beech
HARDWOOD Fine finish, tough, durable Beige w pink hue Uses: children's toys, furniture
27
Mahogany
HARDWOOD Easily worked, durable, finishes well Reddish brown Uses: high end furniture, veneers
28
Oak
HARDWOOD Tough, hard, durable Light brown Uses: flooring, furniture
29
Softwood
From coniferous trees Bears needles & has cones Loose grain strucutre (no visible pores, thicker fibre content, wide grain pattern) easier to work w Fast growing
30
Pine
SOFTWOOD Lightweight, easy to work w Palye yellowish brown Uses: interior construction
31
Spruce
SOFTWOOD Easy to work w, high stiffness to weight ratio Creamy white Uses: musical instruments
32
Larch
SOFTWOOD Durable, tough, water res. Resistant to extremes of climate. Its natural oil content makes water res so suitable for decking, fencing Pale reddish brown Uses: exterior, flooring
33
MT: Chipboard
Wood chips of varying sizes mixed w resin, pressed. Good compressive strength, not water res unless treated. Good value but chipping on edges & corners Uses: flooring, worktops
34
MT: Medium density fibreboard (MDF)
Waste hardwood & softwood is broken down into fibres & combined w resin. Pressed into sheets that are dense, rigid & stable, smooth easy to finish surface. Very absorbent so not good in high humidity Uses: kitchen units
35
MT: Plywood
Thin layers or veneers glued tg, very stable in all directions due to alternate layering at 90dc, w outside layers running in the same direction Uses: shelving
36
Adv of choosing manufactured timbers over natural timber
Manufactured boards available in large board sizes, reducing no. of joints Can be laminated to apply wide range of finishes No grain, so easy to work w
37
Disadv of choosing manufactured boards over natural timber
Manufactured boards are dense making very heavy in large sheets Edges are difficult to finish due to no natural end grain
38
Ferrous metals
Contain iron ferrite & have high tensile strength & durability Magnetic Vulnerable to rust w/o finish Stainless steel protected from rust by presence of chromium
39
Low carbon/mild steel
FERROUS Tough & ductile, rusts easily if not finished Uses: car bodies, pipelines
40
Cast iron
FERROUS Hard but brittle. Resists deformatjin & rust Uses: kitchen pans, manhole covers
41
High carbon steel/tool steel
FERROUS Hard but brittle, hard wearing, resists abrasion. Chromium may be added to add strength/resist distortion Uses: tools as hard & abrasion, pressure res
42
Non-ferrous metals
Group of pure metals, do not contain iron Non-magnetic so used for wiring & electronics Higher res to rust but can corrode or oxidise
43
Aluminium
NON-FERROUS Lighweight, ductile, res to corrosion Uses: bike frames, drink cans
44
Zinc
NON-FERROUS Brittle, yet malleable, high corrosion res Uses: used to galvanise steel
45
Copper
NON-FERROUS Ductile, malleable. Good electrical conductor Uses: electrical cables
46
Alloys
Mixture of at least one pure metal and another element Imrpoves working properties or aesthetics Harder than pure metals bc contain atoms of diff sizes, distorting arrangement of the atoms, making jarder for layers to slide over eachother
47
Stainless steel
ALLOY Low carbon + chromium Hard, ductile, rust res. Chromium layer protects steel from corrosion. Uses: cutlery due to being poor conductor of heat & hygienic
48
Brass
ALLOY Copper + zinc Malleable, corrosion res Uses: musicsl instruments
49
Adv of alloy over pure metal
Alloys harder than pure due to (cant slide over) Alloys better corrosion res than pure Easily manipulated into diff forms
50
Natural occuring plastics
Amber Rubber
51
Thermoforming polymers
Using heat to form thermoplastics More flexible than thermosets & easy to shape, when heated Polymer chains quite loosely entangled w few cross links. Allows chains to slide over easily when heated (formed into complex shapes multiple times)
52
Thermoforming molecules
O-O-O-O-O O-O-O-O-O
53
Polypropylene (PP)
THERMOFORMING Flexible, tough, lightweight Uses: kitchens
54
Acrylic (PMMA)
THERMOFORMING Tough but brittle when thin. Easily scratched Uses: car lights
55
High density polyethylene (HDPE)
THERMOFORMING Lightweight, chemical res Uses: milk bottles
56
High impact polystyrene (HIPS)
THERMOFORMING Flexigle, impact res, lighweight, used for vaccum forming Uses: yoghurt pots
57
Polythylene terephthalate (PET)
THERMOFORMING Blow moulded, chemical res, recyclable Uses: drink bottle
58
Polyvinyl chloride (PVC)
THERMOFORMING Flexible, tough, res to chemicals Uses: raincoats, pipes
59
Thermosetting polymer
involves using chemical reactions to form plastic, that are very heat resistant and cannot be reformed by heat. Hard, brittle, good insulation & chemical res
60
Thermosetting molecules
O-O-O-O-O \ \ \ \ \ O-O-O-O-O
61
Polyester resin (PR)
THERMOSETTING Good eletrical insulator, hard, touch when mixed w glass Uses: boats
62
Epoxy resin (ER)
THERMOSETTING Good strength:weight ratio, good electrical insulator, heat res Uses: circuit boards
63
Urea Formaldehyde (UF)
THERMOSETTING High tensile strength, heat res, electrical insulator, easily injection moulded Uses: electrical casings
64
Melamine Formaldehyde (MF)
THERMOSETTING Lightweight, hard but brittle Uses: kitchenware
65
What are textiles derived from
Natural & synthetic materials
66
Textile: natural fibres
Made from plant or animal based fibres, renewable
67
Textile: synthetic fibres
Made from chemically produced polymers
68
Textile: blended fibres
Combine 2 or more types of fibres to produce fabric w useful properties
69
Cotton
NATURAL FIBRE sourced: cotton plant Soft, strong, absorbent, washes & takes dyes well Uses: clothing, towel
70
Silk
NATURAL FIBRES sourced: silkworm cocoon Soft, fine, lightweight, natural shine due to its triangular structure Uses: luxury clothing
71
Wool
NATURAL FIBRES sourced: sheep, goats, rabbits Warm, crease res, absorbent Uses: rugs, blankets
72
Polyamide (Nylon)
SYNTHETIC FIBRE Strong & hard wearing, resist creasing Uses: parachutes
73
Elastine (Lycra)
SYNTHETIC FIBRE Smooth, strong, stretchy, retains shape Uses: swimwear
74
Polyester
SYNTHETIC FIBRE Tough, hard wearing, non-absorbent Uses: fleece, backpack
75
Polycotton
BLENDED FIBRE Durable, stronger than pure cotton Uses: bed sheets
76
Woven cloth
Made up of 2 sets of yarns which are threaded at 90degrees to each other
77
Plain weave
WOVEN CLOTH Strong, retains shape, even surface on both sides Uses: tablecloths
78
Non-woven fabric
Made directly from fibres w/o being spun into yarns
79
Bonded fabric
NON-WOVEN FABRIC Lacks strength, no grain so can be cut in any direction w/o fraying Uses: cloths, teabags
80
Knitted fabrics
Interlocking yarn loops tg to produce a fabric. Uses: jumpers, socks
81
Weft knitting
KNITTED FABRIC Made by hand or machine using a single yarn that forms interlocking loops across width of the fabric Can lose its shape
82
Warp knitting
KNITTED FABRIC Made by machine, forms interlocking vertical loops Holds shape better

DT GCSE (29 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions