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WorksheetsSmart Materials Quiz
Total questions: 63
Worksheet time: 32mins
What is a smart material?
A material that is always rigid and unchanging
A material that reacts and changes its properties in response to inputs
A material that is only used in electronics
A material that is always soft and flexible
What are smart materials?
Materials that are always rigid and unchangeable
Materials that have properties which change irreversibly
Materials that have properties which change reversibly
Materials that cannot change with external stimuli
Which of the following is NOT an external stimulus that can change smart materials?
Moisture
Electric or magnetic fields
Sound waves
Temperature
Smart materials can change properties in response to which of the following?
Gravity
Light
Pressure
Sound
Which of the following is NOT a type of input that materials respond to by changing color or shape?
Temperature
Contact with Water
Electrical current
Sound
What change do materials usually undergo in response to inputs like temperature, water, electrical current, and light?
Change in size
Change in color or shape
Change in weight
Change in density
What is a characteristic of smart materials?
They are always made of metal.
They can change properties in response to external stimuli.
They are used only in construction.
They are always transparent.
Which of the following is an example of a smart material application?
A wooden chair
A fire door that changes color when hot
A plastic bottle
A glass window
How do football shirts made of smart materials function?
They change color to indicate overheating.
They become waterproof.
They emit light in the dark.
They repel dirt.
What is the purpose of road signs made from smart materials?
To display advertisements
To change color indicating icy road conditions
To play music
To provide Wi-Fi
Which of the following is an example of a thermochromatic material?
Sunglasses that darken in sunlight
A mug that changes color with temperature
A spoon that changes color when wet
A sign that glows in the dark
What is a characteristic of photochromatic materials?
They change color with temperature
They change color with light exposure
They change shape when stretched
They emit light when pressed
What is Polymorph?
A material that can be shaped and reshaped any number of times.
A type of metal used in construction.
A liquid that solidifies when cooled.
A type of fabric used in clothing.
What do electroluminescent sheets emit when in contact with electricity?
A soft light
A loud sound
A strong odor
A high temperature
How are electroluminescent sheets described in terms of thickness?
Very thick
Very thin
Moderately thin
Extremely thick
In what forms can electroluminescent sheets be produced?
Only in black and white
In a variety of colors
Only in metallic shades
In transparent forms only
What is one of the properties of electro-luminescent wire?
High heat radiation
High power consumption
Electric shock proof
Limited range of colors
In which of the following applications can electro-luminescent wire be used?
In high-temperature ovens
In PC cases
As a replacement for traditional light bulbs
In underwater diving equipment
Which of the following is NOT a use of electro-luminescent wire?
In cars to make them seem as if they are glowing
As a learning aid for children with learning disabilities
In clothing
As a primary source of heating
What is a characteristic of a thermochromic material?
It changes shape as it changes temperature.
It changes color as it changes temperature.
It emits light as it changes temperature.
It becomes magnetic as it changes temperature.
What are thermo-ceramics?
A mixture of metallic powder and ceramic powder combined using sintering.
A type of plastic used in manufacturing.
A form of glass used in windows.
A type of metal alloy used in construction.
What is sintering?
The process of melting metals to form alloys.
The process of compacting solid materials into a mould by heating and applying pressure.
The process of cooling materials to increase strength.
The process of mixing liquids to form a solution.
Which of the following is a property of thermo-ceramics?
High electrical conductivity.
High thermal conductivity.
Low thermal conductivity.
High flexibility.
In which industries are thermo-ceramics commonly used?
Textile and fashion.
Aerospace, automotive, marine, and domestic applications.
Food and beverage.
Agriculture and farming.
What is reactive glass?
A material that changes color with temperature
A material that changes from transparent to opaque with electrical input
A type of glass that is always opaque
A glass that changes color with sunlight
What causes the color change in electrochromic inks?
Temperature changes
Varying electrical inputs
Exposure to sunlight
Chemical reactions with water
What is a key difference between reactive glass and photochromic glass?
Reactive glass changes with sunlight, photochromic with electricity
Reactive glass relies on external stimulus, photochromic on sunlight
Both change with temperature
Both are always opaque
What is the composition of Nitinol?
Nickel and titanium
Copper and zinc
Iron and carbon
Aluminum and magnesium
At what temperature does the SMA wire return to its original shape?
Above 50 degrees centigrade
Above 70 degrees centigrade
Above 90 degrees centigrade
Above 1000 degrees centigrade
What property does the alloy wire exhibit?
Conductivity
Memory
Magnetism
Elasticity
What is a Quantum Tunnelling Composite (QTC) made from?
Micron-sized particles and silicone rubber
Large metal sheets and plastic
Wood fibers and glass
Cotton and polyester
What properties do Quantum Tunnelling Composites have?
Elastic, rubber-like properties and metal particles
Brittle and fragile
Heavy and dense
Transparent and lightweight
Why is sensor contamination or interference impossible in QTC materials?
Due to a no-air gap
Because they are transparent
Because they are magnetic
Due to their color
What is a key characteristic of QTC material?
It is durable and has no moving parts
It is fragile and easily breaks
It is heavy and cumbersome
It is transparent and invisible
How can QTC material be described in terms of versatility?
Versatile both electrically and physically
Only versatile in color
Only versatile in shape
Not versatile at all
What are Liquid Crystal Displays (LCDs) made from?
Metal alloys
Organic, carbon-based compounds
Glass and plastic
Silicon chips
How do Liquid Crystal Displays (LCDs) work?
By heating the liquid crystals
By passing an electric current across the liquid crystal
By reflecting sunlight
By using magnetic fields
What is one advantage of LED TVs over LCD TVs?
LED TVs are more expensive
LED TVs have a thicker design
LED TVs give a better picture and allow the TV to be thinner
LED TVs consume more electricity
What is one unique property of piezoelectric materials when they are deformed?
They emit light.
They generate a small but measurable electrical current.
They change color.
They become magnetic.
What happens to piezoelectric materials when an electrical current is applied?
They melt.
They change size.
They become transparent.
They emit sound.
Which of the following is an application of piezoelectric materials?
Solar panels
Inkjet printers
Wind turbines
Nuclear reactors
By how much can piezoelectric materials change in volume when an electrical current is applied?
Up to 1%
Up to 2%
Up to 3%
Up to 4%
What is a characteristic of smart materials?
They change when an outside force is added.
They are always lightweight.
They are always transparent.
They are always biodegradable.
What distinguishes modern materials from smart materials?
Modern materials change with heat.
Modern materials have specific properties at all times.
Modern materials are always magnetic.
Modern materials are always flexible.
What is the main advantage of smart materials?
They require sensors and electronics to function.
They give new capabilities to materials without the need for sensors, actuators, or electronics.
They are always connected to electricity supplies.
They are more expensive than traditional materials.
Why is it possible for products made with smart materials to interact with the environment without being connected to electricity supplies?
Because they are powered by solar energy.
Because they have built-in batteries.
Because they do not require sensors, actuators, or electronics.
Because they are made of conductive materials.
What type of material glows when electricity is passed through it?
Thermochromic pigments
Electroluminescent materials
Shape Memory alloys
Polymorph
Which material changes color with heat and can be used in baby spoons and mugs?
Fluorescent materials
Reflective materials
Thermochromic pigments
Phosphorescent materials
What is the ability of Shape Memory alloys?
To glow in the dark
To reflect light
To remember an original shape when heated
To change color in response to light
Which materials are bright enough to show up in the dark?
Fluorescent materials
Reflective materials
Photochromatic pigments
Polymorph
What type of material reflects light?
Phosphorescent materials
Reflective materials
Electroluminescent materials
Shape Memory alloys
Which material glows in the dark by absorbing light?
Photochromatic pigments
Polymorph
Phosphorescent materials
Thermochromic pigments
What is a great example of Photochromatic pigments?
Glasses that become tinted in the sun
Baby spoons that change color
Materials that glow when heated
Reflective road signs
What is Polymorph used for?
To glow in the dark
To be shaped and reshaped in hot water
To change color with heat
To reflect light
What is a common use of titanium in modern applications?
Making school uniforms
Replacement hip joints
Bulletproof vests
Building bridges
What is a characteristic of nano materials?
They are used in high-performance bicycles
They are made of a single carbon layer
They involve tiny particles woven into fibers
They are resistant to corrosion
Which material is noted for its high strength-to-weight ratio and resistance to corrosion?
Graphene
Nano materials
Titanium
Steel
What is a key characteristic of metal foams?
High density and weight
Made entirely of metal
Strong and lightweight
Non-absorbent
What percentage of metal is typically found in metal foams?
50-75%
5-25%
30-50%
75-100%
What is a common use for metal foams?
Insulation in buildings
Shock absorption in vehicles
Conducting electricity
Water filtration
What is Biopol primarily made from?
Synthetic chemicals
Metal alloys
Plant sugars and glucose
Mineral oils
Which of the following is NOT a property of Biopol?
Biodegradable
Carbon neutral
Non-compostable
Similar to polypropylene
Which of the following is a use for Biopol?
Electrical wiring
Packaging and disposable items
Metal casting
Glass production
