Materials ( Metals,woods And Fibres/textiles)

Question 1

What’s an alloy ?

Answer 1

Alloys are a mixture of two or more metals , or a metal mixed with one or more elements , they are developed for a purpose that needs a specific set of properties

Question 2

Solid white board , properties and examples

Answer 2

High quality bleached surface , ideal for printing and primary packaging

Question 3

Ink jet card, properties and examples

Answer 3

Designed to stop ink bleeding , meaning high quality images used for ink jet printing

Question 4

Corrugated card, properties and examples

Answer 4

Made up of a fluted inner core (adding strength and rigidity) sandwich between a set of liner each side , which can be printed on , used for secondary packaging

Question 5

Foam core board , properties and examples

Answer 5

Polystyrene foam sandwiched between 2 thin layers of card , it’s lightweight and stiff. Outer layer can be scored. Used for making models and mounting posters

Question 6

Duplex board, properties and examples

Answer 6

Different colour and texture each side. Often only one side is seen so only one side needs to be smooth for package printing ,used for food packaging.

Question 7

Foil lined board, properties and examples

Answer 7

Board with an aluminium foil lining , often used to package food , keeps flavour in and air and moisture out.

Question 8

Softwoods properties

Answer 8

Softwoods grow in colder climates and are faster growing (conifers)

They are cheap and readily accessible

Question 9

Softwood examples

Answer 9

Pine , larch , spruce

Question 10

Pine properties

Answer 10

strong but knotty , cheap. Used for telegraph poles and fencing.

Question 11

Larch properties and examples

Answer 11

Larch-attractive yellow colour , harder,tougher (than other softwoods) . Resistant to rot , examples are decking and cladding

Question 12

Spruce properties

Answer 12

Spruce-hard , good strength to weight ratio , knotty and not very durable

Question 13

Hardwood properties

Answer 13

Grow in warm climates , slow growing , more expensive than soft woods (deciduous) , tighter wood grain , denser and harder

Question 14

Oak properties

Answer 14

Tough,durable , very strong , attractive grain markings,finishes well , used for flooring , interior work , corrodes steel screws and fittings

Question 15

Ash properties

Answer 15

Pale cream, tough , good shock absorbent , attractive , used for tool handles and furniture

Question 16

Mahogany properties

Answer 16

Red brown colour, easy to work with , durable , expensive, used for high quality furniture

Question 17

What is a ferrous metal ?give one example

Answer 17

Metals or alloys mostly made up of iron , most of them are magnetic as a result (e.g.cast iron )

Question 18

What’s a non ferrous metal? Give one example

Answer 18

Don’t contain iron so don’t rust (e.g.aluminium)

Question 19

Stainless steel composition

Answer 19

Iron + carbon + chromium + nickel

Question 20

Thermoforming plastics definition and two examples

Answer 20

Recyclable and bendy , bad heat resistant can be moulded (e.g. acrylic and hips )

Question 21

Thermosetting definition and examples

Answer 21

Non recyclable and rigid , resist heat and fire , used for electrical fittings (e.g.epoxy resin and polyester resin)

Question 22

Natural fibres and examples

Answer 22

Come from natural sources (e.g.cotton, wool , silk )

Question 23

Synthetic fibres and examples

Answer 23

Made from polymers , molecules mainly come from coal and oil (e.g. elastane , polyester, polyamide)

Question 24

Woven fabrics

Answer 24

Made by interlacing two sets of yarns

Question 25

Knitted fabrics

Answer 25

Interlocking one or more yarns using loops , they trap air so insulate , stretchy

Question 26

Non woven fabrics

Answer 26

Made from bonding and felting , don’t fray , can be cut in any direction , little waste , don’t stretch and aren’t strong