Topic 4 - Part 1

For which applications can smart materials, such as shape memory metals, be most beneficial?

I. Medical applications

II. Construction of high-traffic public spaces

III. Household monitoring devices

• I

• II

• III

• ALL

Consider the following properties: thermal conductivity, ductility, and electrical resistivity. Which combination of properties is crucial for materials used in electrical cables?

• High thermal conductivity and high ductility

• Low thermal conductivity and high ductility

• Low thermal conductivity and low ductility

• High thermal conductivity and low ductility

Consider the following properties: taste, smell, and appearance. Which combination of aesthetic characteristics is most relevant when designing stainless steel pots?

• Taste and appearance

• Smell and taste

• Appearance and smell

• Smell and texture

Consider the following properties: transparency, viscosity, and volume. Which combination of smart material properties is most relevant for designing color-changing eyeglasses?

• Transparency and volume

• Viscosity and transparency

• Volume and viscosity

• Transparency, viscosity, and volume

What are the characteristics that can be used to classify natural timber?

• A. Color and texture

• B. Hardness and softness

• C. Tensile strength and resistance to damp environments

• D. Fast and slow growth

In terms of natural timber, what distinguishes hardwoods from softwoods?

• A. Color and texture

• B. Tensile strength and resistance to damp environments

• C. Growth speed

• D. Presence of nuts or seeds

What is the primary role of aesthetics characteristics in material selection?

• To measure the resistance of a material to scratching

• To evaluate the ability of a material to conduct electricity

• To assess the beauty of form through the senses

• To enhance the tensile strength of materials

A designer is working on a project that requires a material with the ability to change its color when exposed to light. Which smart material property is most suitable for this design?

• Piezoelectricity

• Shapememory

• Photochromicity

• Thermoelectricity

Which of the following best describes the concept of density in materials?

• Therelationshipbetweenmassandvolume

• Theabilityofamaterialtoresistscratching

• Thedegreetowhichamaterialincreasesitsdimensionswhenheated

• Thematerials'abilitytoconductorresistelectricity

In the context of material selection, what is the significance of Young's Modulus?

• Itmeasurestheabilityofamaterialtoresistscratching.

• Itindicatestherelationshipbetweenmassandvolume.

• Itmeasuresthestiffnessofanelasticmaterial.

• Itevaluatestheabilityofamaterialtoconductelectricity.