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Unit 2 Smart, Modern and Composite Materials Flashcards | StudBud
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Unit 2 Smart, Modern and Composite Materials
Unit 2 Smart, Modern and Composite Materials
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30 cards
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Practice quiz
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Questions
30
Answers
1
What type of light causes these photochromic pigments to react?
White light
Blue light
UV light
Bright light
2
What is the brand name for the non-stick material on frying pans?
Teflon
Kevlar
Graphene
Copper
3
Low power consumption, can be made compact, lightweight, portable & robust
Graphene Screens
Nanomaterials
LCD Screens
Fibre optics
4
Which Smart material reacts to the following stimulus: UV light
Self-healing polymer
Thermochromic pigments
SMA nitinol
Photochromic particles / pigments
5
Used to make medical implants as it is nonreactive to the human body.
Graphene
Nanomaterials
Stainless steel
Titanium
6
Which one of the following is a type of Aramid fibre?
Gore-Tex®
Cotton
Kevlar®
Polyester
7
Which one of the following statements is false about Modern materials?
Information is transmitted down fibre optic cables using pulses of light
Graphene is a carbon lattice structure one atom thick
Nanomaterials are between 1 and 1000 nanometres in size
Biodegradable polymers are made from petrochemical resources
8
What type of Smart material is pictured?
Litmus paper
QTC
Piezoelectric material
Shape memory alloy (SMA)
9
Which one of the following smart materials does NOT react to electricity?
Thermochromic pigment
Piezoelectric materia
Quantum tunnelling compound
Shape memory alloy
10
Which Smart material reacts to the following stimulus: Sound?
Litmus paper
Self-healing concrete
Piezoelectric material
Thermochromic pigments, SMA nitinol
11
Which Smart material reacts to the following stimulus: PH levels?
Self-healing polymer, self-healing concrete
Litmus paper
] Thermochromic pigments
Photochromic particles / pigments
12
The glaze of this mug contains which Smart material?
Photochromic pigments
Litmus paper
Thermochromic pigments
Piezoelectric material
13
At what temperature is a shape ‘set’ in to the memory of SMA nitinol?
400°C
1540°C
70°C
540°C
14
Can cause drowsiness & nausea, use in a well-ventilated area
Volatile Organic Compounds (VOCs)
Mr Willson's After-shave
B.O.
Farts
15
NOT a reason why carbonfibre reinforced plastic is used in sports equipment
It is stiff, rigid and tough and has good tensile strength.
It is lightweight and has an exceptionally high strength to weight ratio.
It is hard and a good conductor of electricity.
16
Which Smart material reacts to the following stimulus: Electricity?
Thermochromic pigments
Piezoelectric material
Self-healing concrete
Photochromic particles / pigments
17
Millions of tiny holes per cm2 mean this fabric is waterproof
PVC
Polyester
Kevlar®
Gore-Tex®
18
Why is a release agent applied to a mould before it is used for shaping?
To ensure the component comes away from the mould easily and without damage
To improve the surface finish of the product.
To make the product smell nic
To make the mould last longer.
19
The plastic colouring of this spoon contains which Smart material?
Photochromic pigments
SMA nitinol
Thermochromic pigments
Self-healing polymer
20
Materials with tiny components with at least one measurement below 100nm
Nanomaterials
Graphene
Metal foam
Polymorph
21
Materials with properties that are affected by an outside stimulus eg heat
Modern material
Composite material
Technical textile
Smart material
22
Which Smart material reacts to the following stimulus: Heat?
Photochromic particles / pigments
Thermochromic pigments and SMA nitinol
Piezoelectric material and SMA nitinol
Litmus paper
23
Textile material with enhanced properties to withstand specific uses
Alloy
Smart material
Fabric
Technical textile
24
__________________ come from vegetable starch sources.
Alloys
Biodegradable polymers
Nanomaterials
Synthetic polymers
25
Which Smart material reacts to the following stimulus: Pressure?
Litmus paper
QTC
Self-healing polyme
SMA nitinol
26
Which Smart materials react to stress and fractures?
QTC or piezoelectric material
Self-healing polymer or self-healing concrete
Thermochromic pigments or SMA nitinol
Piezoelectric material or SMA nitinol
27
Which is NOT a potential use for Graphene?
Touch screen technolog
Medical sensors
Energy storage and batteries
Explosives
28
Two or more materials combined to enhance the properties of both
Composite material
Alloy
Smart material
Manufactured board
29
A bullet proof vest probably made from an aramid fibre such as
PVC
Gore-Tex®
Cotton
Kevlar®
30
Stimulus temperature required to return SMA nitinol to its ‘set’ shape
60°C
70°C
20°C
80°C
