Smart Materials Quiz

What are smart materials?

• Materials that can conduct electricity

• Materials that can change properties reversibly

• Materials used exclusively in smartphones

• Materials that are used in space technology

Which of the following is an example of a thermochromic pigment application?

• Solar panels

• Electric circuits

• Color-changing mugs

• Plastic bottles

How do thermochromic pigments work?

• They change color at specific temperatures

• They change color when exposed to light

• They change color when exposed to water

• They change color when electric current passes through them

What is NOT a use of thermochromic pigments?

• In battery power indicators

• In solar cells

• In forehead thermometers

• In color-changing spoons

What is the primary characteristic of photochromic pigments?

• They glow in the dark

• They change color when exposed to light

• They are only visible under UV light

• They permanently change color after exposure to sunlight

Which property is why we use photochromic lenses in glasses?

• They enhance night vision

• They protect against infrared light

• They darken in sunlight and revert indoors

• They magnify vision

What happens to shape memory polymers when they are heated after being deformed?

• They dissolve

• They expand

• They return to their original shape

• They become rigid and brittle

Which of the following is NOT an application of shape memory polymers?

• In helmets

• In optical lenses

• In car bumpers

• In medical stitches

What is a shape memory alloy?

• A type of polymer that changes color when heated

• A mixture of metals that returns to its original shape when heated

• A type of ceramic that becomes more brittle when cooled

• A synthetic rubber that increases in elasticity with temperature

Which of the following is NOT a use of shape memory alloys?

• In surgical plates for bone fractures

• In electrical insulation

• In sporting equipment

• In car bodies