Smart Materials Quiz

What is a smart material?

• A material that is always rigid and unchanging

• A material that reacts and changes its properties in response to inputs

• A material that is only used in electronics

• A material that is always soft and flexible

What are smart materials?

• Materials that are always rigid and unchangeable

• Materials that have properties which change irreversibly

• Materials that have properties which change reversibly

• Materials that cannot change with external stimuli

Which of the following is NOT an external stimulus that can change smart materials?

• Moisture

• Electric or magnetic fields

• Sound waves

• Temperature

Smart materials can change properties in response to which of the following?

• Gravity

• Light

• Pressure

• Sound

Which of the following is NOT a type of input that materials respond to by changing color or shape?

• Temperature

• Contact with Water

• Electrical current

• Sound

What change do materials usually undergo in response to inputs like temperature, water, electrical current, and light?

• Change in size

• Change in color or shape

• Change in weight

• Change in density

What is a characteristic of smart materials?

• They are always made of metal.

• They can change properties in response to external stimuli.

• They are used only in construction.

• They are always transparent.

Which of the following is an example of a smart material application?

• A wooden chair

• A fire door that changes color when hot

• A plastic bottle

• A glass window

How do football shirts made of smart materials function?

• They change color to indicate overheating.

• They become waterproof.

• They emit light in the dark.

• They repel dirt.

What is the purpose of road signs made from smart materials?

• To display advertisements

• To change color indicating icy road conditions

• To play music

• To provide Wi-Fi