engineering materials

Question 1

cotton

Answer 1

name: cotton
classification: natural organic material
properties: absorbent, drapes well, soft
example uses: comfortable against skin, machine washable, t shirts, bed sheets, towels

Question 2

copper

Answer 2

name: copper
classification: chemically ductile material
properties: ductile, doesnt rust , high electrical conductivity
example uses: plumbing, electrical cables, roofing, jeweller, cooking pans

Question 3

hardwoods

Answer 3

name: hardwoods
classification: slow growing woods
properties: complicated cell structure, loses leaves in winter, keeps leaves in summer
example uses: construction, furniture and flooring

Question 4

softwoods

Answer 4

name: softwoods
classification: fast growing woods
properties: fast growing, easy to work, clear grain structure
example uses: construction, furniture, paper

Question 5

linen

Answer 5

name: linen
classification: fibre based material
properties: strong, durable, not very elastic
example uses: clothes, aprons, bags

Question 6

silk

Answer 6

name: silk
classification: natural fibre material
properties: smooth, soft, strong
example uses: shirt ties, suits, lingerie

Question 7

silver

Answer 7

name: silver
classification: natural non ferrous metal
properties: sonorous, ductile and malleable
example uses: dental fillings, plasters and jewellery

Question 8

wool

Answer 8

name: wool
classification: natural fibre
properties: good insulator, hypoallergenic, thick
example uses: clothing, blankets, rugs

Question 9

thermoset plastics

Answer 9

name: thermoset plastic
classification: plastic/pure synthetic
properties: strong, heat resistant and brittle
example uses: adhesives

Question 10

cellophane

Answer 10

name: cellophane
classification: thin regenerated cellulose
properties: stretchy, strong, rips easily
example uses: food and water packaging

Question 11

acrylic

Answer 11

name: acrylic
classification: synthetic plastic
properties: tough, resistant to weather, malleable, flexible
example uses: airplanes, windshields, skylights

Question 12

Kevlar

Answer 12

name: Kevlar
classification: strong synthetic material
properties: difficult to corrode, resistant to heat, strong
example uses: body armour, bullet proof vests, bicycle frames

Question 13

PP

Answer 13

name: polypropylene
classification: thermoplastic polymer
properties: resistance to fatigue, durable and strong
example uses: packaging, textiles and plastic reusable containers

Question 14

nylon

Answer 14

name: polyamide
classification: synthetic plastic
properties: solid, tough
example uses: ropes, bristles, musical strings

Question 15

PTFE

Answer 15

name: polytetrafluoroethylene
classification: synthetic polymer
properties: heat resistant, tough, strong
example uses: non stick coating for pans, pipes and containers for corrosive liquids

Question 16

polyethylene

Answer 16

name: polyethylene
classification: low density and high density polyethylene
properties: LDPE - flexible, malleable
HDPE - strong and flexible
example uses: LDPE - packaging, newspaper, disposable cups
HDPE - bags, bleaches, shampoos

Question 17

PVC

Answer 17

name: polyvinyl chloride
classification: manufactured plastic
properties: malleable, soft inflatable
example uses: sewerage pipes, window and door frames

Question 18

viscose

Answer 18

name: viscose
classification: organic liquid
properties: thin, transparent
example uses: rayon, packaging, clothing

Question 19

paper

Answer 19

name: paper
classification: organic solid
properties: thin, flexible, flammable
example uses: writing, printing, folding, packaging

Question 20

cellulose-based boards

Answer 20

name: cellulose
classification: natural substance
properties: thick, durable, resistant to tears
example uses:cards, boards, boxes

Question 21

chipboard

Answer 21

name: chipboard
classification: composite material
properties: dense, resistant to heat and pressure
example uses: kitchen worktops, fire doors and attic flooring

Question 22

MDF

Answer 22

name: medium density fibreboard
classification: composite material
properties: resistant to heat and pressure, dense and easy to cut
example uses: cheap table tops, shelves, painted furniture

Question 23

carbon fibre

Answer 23

name: carbon fibre
classification: composite polymer
properties: lightweight, hard, tough
example uses: car bodies, tentacles and sports equipment

Question 24

GRP

Answer 24

name: glass reinforced plastic
classification: composite plastic
properties: tough, hard, flexible
example uses:boat hulls, roofs, baths

Question 25

aluminium

Answer 25

name: aluminium
classification: alloy
properties: recyclable, low density, resistant to corrosion
example uses: aerospace industry, packaging and transport

Question 26

brass

Answer 26

name: brass
classification: alloy
properties: sonorous, ductile, malleable
example uses: coins, instruments, plumbing

Question 27

bronze

Answer 27

name: bronze
classification: alloy
properties: High electrical and thermal conductivity, resistant to corrosion
example uses: ornaments, ancient weapons and sculptures

Question 28

epoxy resin

Answer 28

name: epoxy resin
classification: thermoset plastic
properties: malleable, easy to work, flexible
example uses: to make GRP, moulding, make plastic tooling

Question 29

polyester

Answer 29

name: polyester
classification: naturally occurring chemical
properties: Durability, strength,
Resistance to chemicals
example uses: suits, shirts, sofa covers

Question 30

thermoplastic

Answer 30

name: thermoplastic
classification: plastic/pure synthetic
properties: malleable
example uses: packaging, toys, acrylic

Question 31

block board

Answer 31

name: block board
classification: composite material
properties: poor conductor of sound, heat and electricity, light, solid
uses: shelves, interior doors, panelling and partitions