smart and modern materials

Question 1

types of modern materials

Answer 1

kevlar
precious metal clay
high density modelling foam
polymorph

Question 2

types of smart materials

Answer 2

shape memory alloy
thermochromic pigment
phosphorescent pigment
photochromic pigment
electroluminescent wire
piezoelectric material

Question 3

kevlar

Answer 3

heat res made of aramid fibres

uses - body armour, aprons puncture resistant tyres

Question 4

precious metal clay

Answer 4

made of fine metal particles, easily mouldable and formable, inexpensive

uses - jewellery, decorative items

Question 5

high density modelling foam

Answer 5

lightweight, easy to work, can be sanded to create intricate shapes

uses - 3D modelling and prototypes

Question 6

polymorph

Answer 6

granules that are mouldable at about 60c, can be heated with hair dryer or water

uses - modelling and prototypes

Question 7

shape memory alloy

Answer 7

changes shape because of temp or electrical changes

uses - dental braces

Question 8

thermochromic pigment

Answer 8

changes colour in response to temperature change

uses - thermometers, baby feeding equipment

Question 9

phosphorescent pigment

Answer 9

absorbs light during day and emits it at night

uses - glow in dark items, night lights

Question 10

photochromic pigment

Answer 10

changes colour with light intensity

uses - welding goggles, reactive spectacle lenses

Question 11

electroluminescent wire

Answer 11

copper wire that is covered in phosphorescent material and when an alternating current is detected it glows

uses - home decoration, glow bracelets, clothing

Question 12

piezoelectric material

Answer 12

increases in size when electric current is passed through it

uses - lighters for barbeques and airbag sensors