S & M Materials

Question 1

What are smart materials?

Answer 1

Materials whose physical properties change in response to input or environmental conditions

Examples include shape memory alloys and thermochromic materials.

Question 2

What defines modern materials?

Answer 2

New materials that do not respond to external stimuli

These materials are typically used in applications where change is not required.

Question 3

What are thermoceramics?

Answer 3

Metal powder compressed under high pressure, resulting in very hard materials

Commonly used in jet engines and drill tips.

Question 4

What applications use shape memory alloys?

Answer 4

Dental braces and wing flaps

These alloys change shape in response to temperature or electrical input.

Question 5

What is reactive glass?

Answer 5

Glass that changes tint with temperature changes, becoming opaque

Often used in apartment windows.

Question 6

What do LCD screens do?

Answer 6

Change color when voltage is applied

Used in computer screens and various displays.

Question 7

What is photochromic material?

Answer 7

Material that darkens when exposed to light

Commonly found in welding goggles and sunglasses.

Question 8

What is thermochromic material?

Answer 8

Material that changes color in response to temperature

Examples include bath toys that change color with heat.

Question 9

What is the composition of the Ate - Quanhon tunneling composite?

Answer 9

Rubber with metal particles

This composite can serve as a pressure sensor and has properties of both insulator and conductor.

Question 10

Fill in the blank: Smart materials can change their physical properties in response to _______.

Answer 10

input or environmental conditions

Question 11

True or False: Modern materials respond to environmental changes.

Answer 11

False

Modern materials are characterized by their lack of response to stimuli.