WorksheetsQuiz on Smart Materials
Total questions: 15
Worksheet time: 8mins
What is a key characteristic of smart materials?
They change physically in response to external stimuli.
They are always made of metal.
They are always used in electronics.
They never return to their original form.
What happens to shape-memory alloys when they are heated?
They expand.
They change color.
They contract.
They remember their shape.
What is a common use for nickel titanium (nitinol)?
In color-changing mugs.
In photochromic lenses.
In spectacle frames.
In braces to move teeth.
What do thermochromic pigments do?
Change color when exposed to UV light.
Glow when a current is applied.
Change color with temperature changes.
Conduct electricity when squashed.
What is a well-known application of photochromic pigments?
In electroluminescent wires.
In spectacle lenses that darken in sunlight.
In self-healing materials.
In shape-memory alloys.
What is electroluminescent film commonly used for?
In self-healing concrete.
In modeling and ergonomic handles.
In color-changing bath items.
In decorative luminescent clothing.
What is a characteristic of quantum-tunnelling composite (QTC)?
It remembers its shape when heated.
It changes color with temperature.
It is a conductor when pressure is applied.
It glows when a current is applied.
What is a use of self-healing materials?
To conduct electricity when squashed.
To repair themselves and extend product lifespan.
To glow in the dark.
To create color-changing properties.
What happens to polymorph when it is heated to about 62°C?
It becomes malleable.
It glows.
It conducts electricity.
It changes color.
What is a benefit of photochromic lenses?
They change color with temperature.
They protect eyes from UV light.
They are used in modeling.
They are always clear.
What is a common application of thermochromic pigments?
In electroluminescent wires.
In self-healing concrete.
In color-changing mugs.
In spectacle frames.
What is a property of electroluminescent wire?
It changes color with temperature.
It repairs itself.
It glows when a current is applied.
It conducts electricity when squashed.
What is a use of quantum-tunnelling composite (QTC) in clothing?
To glow in the dark.
To control smartphones and music players.
To repair itself.
To change color with temperature.
What is a feature of self-healing polymers?
They change color with temperature.
They glow when a current is applied.
They conduct electricity when squashed.
They heal knife cuts in themselves.
What is a characteristic of polymorph when it cools down?
It conducts electricity.
It changes color.
It becomes hard enough to drill and cut.
It becomes malleable.
