Raw Materials to Final Production

Question 1

Mass & Weight

Answer 1

Mass - a coherent, typically large body of matter with no definite shape

Weight - An objects relative mass or the quantity of matter contained by it

Question 2

Volume

Answer 2

the amount of space measured in cubic units

Question 3

Density

Answer 3

the mass per unit volume

density = mass/volume

Question 4

Resistance

Answer 4

the ratio of the potential difference across the component to the current flowing through it

Question 5

Electrical Resistance

Answer 5

a measure of the degree to which an electrical component opposes the passage of en electrical current

Question 6

Thermal Conductivity

Answer 6

a measure of how fast heat is conducted through a slab of material with a given temperature difference across the slab

Question 7

Thermal Expansion

Answer 7

a measure of the degree of increase in dimensions when an object is heated

Question 8

Hardness

Answer 8

the resistance a material offers to penetration or scratching

Question 9

Tensile Strength

Answer 9

the ability of a material to withstand pulling force

Question 10

Stiffness

Answer 10

the resistance of an elastic body to deflection by an applied force.

Question 11

Toughness

Answer 11

the ability of a material to resist the propagation of cracks. (where out)

the ability of a material to absorb energy when impacted (absorb impact)

Question 12

Ductility

Answer 12

the ability of a material to be drawn for extruded into a wire or other intended shape.

Question 13

Elasticity

Answer 13

the ability of a body to resist a distorting influence or stress and to return to its original size and shape when the stress is removed

Question 14

Plasticity

Answer 14

the propensity of a material to undergo permanent deformation under load

Question 15

Brittle

Answer 15

when a material is hard to break or shatter easily

Question 16

Stress

Answer 16

the force per unit area of a material

Question 17

Strain

Answer 17

extension or reduction per unit length

strain = extension / original length

Question 18

Young’s Modulus
(elastic modulus)

Answer 18

a mechanical property of linear elastic solid materials

defines the relationship between stress and strain

Question 19

Aesthetic Characteristics

Answer 19

taste, smell, appearance, and texture

Question 20

Smart Material

Answer 20

they have one or more properties that can be significantly changed in a controlled fashion by external stimuli

stress, moisture, electric/magnetic fields, light, temperature, pH, or chemical compounds

Question 21

Shape memory

Answer 21

the ability to recover their original shape from a significant and seemingly plastic deformation when a particular stimulus is applied.

Question 22

Photochromism

Answer 22

the reversible transformation of a chemical species between two forms by the absorption of electromagnetic radiation, where the two forms have different absorption spectra.

Question 23

Thermoelectricity

Answer 23

a material subject to a temperature gradient, generates an electric charge.

Question 24

Magneto-Rheostatic vs Electro-Rheostatic

Answer 24

electro-rheostatic fluids undergo viscosity change when exposed to an electric field
magneto-rheostatic fluids undergo similar changes when exposed to a magnetic field.

Question 25

Shear

Answer 25

two opposing offices passing by each other but not hitting