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Gcse Dt > Smart Materials > Flashcards

Smart Materials Flashcards

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1
Q

What are smart materials?

A

Materials that can change properties in response to external stimuli.

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2
Q

True or False: Smart materials can only respond to temperature changes.

A

False

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3
Q

Fill in the blank: One example of a smart material is __________.

A

shape memory alloys

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4
Q

What is the main characteristic of shape memory alloys?

A

They can return to a predetermined shape when heated.

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5
Q

What are piezoelectric materials used for?

A

To generate an electric charge in response to applied mechanical stress.

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6
Q

True or False: Thermochromic materials change color with temperature changes.

A

True

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7
Q

What is a common application of photochromic materials?

A

Sunglasses that darken in bright sunlight.

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8
Q

Which smart material can be used in self-healing applications?

A

Polymeric materials

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9
Q

Multiple Choice: Which of the following is NOT a smart material? A) Shape memory alloy B) Concrete C) Piezoelectric material

A

B) Concrete

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10
Q

What is the function of electrochromic materials?

A

They change color or opacity when an electric current is applied.

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11
Q

Fill in the blank: __________ materials can change their viscosity in response to stress.

A

Non-Newtonian

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12
Q

What property do magnetorheological fluids exhibit?

A

They change their viscosity in the presence of a magnetic field.

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13
Q

True or False: Smart materials can be used in wearable technology.

A

True

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14
Q

What is the purpose of using smart materials in design?

A

To create products that can adapt to their environment.

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15
Q

Which smart material is commonly used in robotics for movement?

A

Shape memory alloys

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16
Q

Multiple Choice: Which smart material is best for sound sensing? A) Piezoelectric B) Thermochromic C) Shape memory alloy

A

A) Piezoelectric

17
Q

What does the term ‘self-healing’ refer to in smart materials?

A

The ability of a material to repair itself after damage.

18
Q

Fill in the blank: __________ sensors can detect changes in pressure using piezoelectric materials.

A

Pressure

19
Q

What is a key benefit of using smart materials in construction?

A

Increased energy efficiency and adaptability.

20
Q

True or False: Smart materials can only be used in high-tech applications.

A

False

21
Q

What type of smart material can be used for temperature sensing?

A

Thermocouples

22
Q

Multiple Choice: Which of the following materials can change shape with temperature? A) Plastic B) Shape memory alloy C) Wood

A

B) Shape memory alloy

23
Q

What role do smart materials play in the development of adaptive clothing?

A

They allow clothing to respond to environmental changes, enhancing comfort.

24
Q

Fill in the blank: __________ materials can be used to create responsive surfaces in architecture.

A

Active

25
Q

What is the importance of research in smart materials?

A

To discover new applications and improve existing materials.

Gcse Dt (7 decks)

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