Smart materials (AQA GCSE Design and Technology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the key characteristic that makes materials 'smart'?
What is the key characteristic that makes materials 'smart'?
They respond to external stimuli
What does 'smart' mean in smart materials?
What does 'smart' mean in smart materials?
They sense changes & respond automatically
What two metals make up Nitinol?
What two metals make up Nitinol?
Nickel and titanium
What is the typical trigger temperature for many shape memory alloy applications?
What is the typical trigger temperature for many shape memory alloy applications?
Around 70°C
Which benefit do shape memory alloys provide in design?
Which benefit do shape memory alloys provide in design?
Space-saving with fewer mechanical parts
What causes the limited lifespan of shape memory alloys?
What causes the limited lifespan of shape memory alloys?
Metal fatigue over repeated cycles
How are shape memory alloy tubes used in medical devices?
How are shape memory alloy tubes used in medical devices?
Compressed, inserted in arteries, expand
What causes thermochromic pigments to change color?
What causes thermochromic pigments to change color?
Molecular structure alters at temp.
Which product commonly uses thermochromic pigments?
Which product commonly uses thermochromic pigments?
Baby bottles that show if too hot
What type of light causes photochromic materials to change color?
What type of light causes photochromic materials to change color?
Ultraviolet light
What are transition lenses in eyeglasses an example of?
What are transition lenses in eyeglasses an example of?
Photochromic technology
Which automotive application uses thermochromic materials?
Which automotive application uses thermochromic materials?
Temperature indicators