Smart Materials Quiz

What is a smart material?

• A material with built-in electronics

• A material that changes properties in response to an external stimulus

• A material made from recycled products

• A material that is environmentally friendly

Which of the following is a stimulus that can cause a smart material to change?

• Light

• Temperature

• pH

• All of the above

What happens to thermochromic pigments when heated?

• They become magnetic

• They change colour

• They glow in the dark

• They become transparent

A common use for thermochromic pigment is:

• Circuit boards

• Temperature warning signs or kettles

• Solar panels

• Reinforced concrete

Thermochromic pigments react to:

• Heat

• Moisture

Sunglasses that darken in sunlight use which type of smart material?

• Thermoplastic

• Shape memory alloy

• Photochromic pigment

• Polymorph

Which smart material returns to its original shape after being deformed?

• Nanomaterial

• Shape memory alloy

• Polymer gel

• Kevlar

Nitinol is a type of:

• Composite

• Thermosetting plastic

• Shape memory alloy

• Coating

A typical use for shape memory alloy (SMA) is:

• Bike helmets

• Tooth braces or stents

• Window frames

• Batteries

What property of SMA makes it useful in medical applications?

• Lightweight and soft

• Biodegradable

• Returns to shape when heated