Technological World

Question 1

what is a direct link

Answer 1

when two parts are joined directly, no third item is present to join them

Question 2

what is an indirect link

Answer 2

when a third item joins two parts together (screw, glue, etc)

Question 3

what does it mean if a link is partial

Answer 3

if one part moves the other part it is linked with doesn’t have to

Question 4

how do you know when a link is complete

Answer 4

if one part moves the part it is linked with also moved

Question 5

what does it mean when a link is removable

Answer 5

parts can be disassembled without damage

Question 6

what does it mean when a link is non-removable

Answer 6

parts cannot be disassembled without damage

Question 7

what does it mean when a link is rigid

Answer 7

The linking mechanism does not allow for movement between parts

Question 8

what does it mean when the link is elastic

Answer 8

linking mechanism allows the parts to change position

Question 9

what is the function of a guiding control

Answer 9

allows a minimum/maximum amount of movement between two or more parts

Question 10

what are the three types of guiding controls

Answer 10

translational, rotational, and helical

Question 11

what is a power supply

Answer 11

component that can generate or provide the power that makes an electrical current in a circuit

Question 12

what are some types of power supplies

Answer 12

battery, electrical outlet, and photovoltaic cell

Question 13

what is a conductor

Answer 13

component that can transmit an electrical current from one part of a circuit to another

Question 14

what is an insulator

Answer 14

A component that prevents the flow of electrons

Question 15

what is protection

Answer 15

component that can automatically stop current flow in case of a power source

Question 16

what factors can affect electrical conductivity

Answer 16

temperature and length

Question 17

how does temperature electrical conductivity

Answer 17

The colder the circuit the better

Question 18

how does the length of a wire affect the electrical conductivity

Answer 18

shorter the wire better

Question 19

what is a control

Answer 19

The ability to control the travel of electrical current (switch)

Question 20

what are different types of switches

Answer 20

push button, lever, flip-flop, and magnetic contact switch

Question 21

what is the transformation of energy in a lightbulb

Answer 21

electrical energy—>light and heat

Question 22

what is the transformation of energy in a battery when it’s being charged

Answer 22

electrical energy—->chemical energy and heat

Question 23

what is the transformation of energy in a battery when it’s in use

Answer 23

Chemical energy—->electrical energy and heat

Question 24

what is the transformation of energy in a motor

Answer 24

electrical energy—->mechanical energy and heat and sound

Question 25

what is the transformation of energy with a speaker

Answer 25

electrical energy---->sound mechanical and heat energy

Question 26

what is a constraint

Answer 26

an element of external forces on the material

Question 27

what is compression

Answer 27

pushing together an object

Question 28

what is tension

Answer 28

pulling an object apart

Question 29

what is torsion

Answer 29

twisting an object

Question 30

what is deflection

Answer 30

bending an object

Question 31

what is shearing

Answer 31

cutting an object

Question 32

what is a mechanical property

Answer 32

how a material reacts when subjected to one or more constraints

Question 33

what are the main mechanical properties

Answer 33

hardness, elasticity, resilience, ductility, malleability, and stiffness

Question 34

what is hardness

Answer 34

The ability to resist indentation or abrasion

Question 35

what is elasticity

Answer 35

ability to return to their original shape undergoing a constraint

Question 36

what is resilience

Answer 36

ability to resist shock without breaking

Question 37

what is ductility

Answer 37

ability to stretch without breaking

Question 38

what is malleability

Answer 38

ability to be flattened or bent without breaking

Question 39

what is stiffness

Answer 39

ability to retain shape when subjected to various constraints

Question 40

what is corrosion resistant

Answer 40

ability to resist corrosion (rest, etc.)

Question 41

what is electrical conductivity

Answer 41

ability to conduct electricity

Question 42

what is thermal conductivity

Answer 42

ability to conduct heat

Question 43

what is thermoplastic

Answer 43

it can be heated and molded into new shapes

Question 44

what are the two types of plastic

Answer 44

thermoplastics and thermosetting

Question 45

what is thermosetting

Answer 45

plastic that cannot be heated and molded into new shapes

Question 46

what are some properties of ceramics

Answer 46

Low electrical conductivity, hardness, heat resistant, resistant to corrosion

Question 47

how can we prevent degradation with penetration of liquids

Answer 47

add waterproof coating

Question 48

how can we prevent degradation with oxidation

Answer 48

add antioxidants

Question 49

how can we prevent degradation with UV rays

Answer 49

add dark colors to absorb the UV rays

Question 50

what is linking

Answer 50

The connection of two or more parts