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Science ST > Technological World > Flashcards

Technological World Flashcards

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1
Q

what is a direct link

A

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

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2
Q

what is an indirect link

A

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

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3
Q

what does it mean if a link is partial

A

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

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4
Q

how do you know when a link is complete

A

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

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5
Q

what does it mean when a link is removable

A

parts can be disassembled without damage

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6
Q

what does it mean when a link is non-removable

A

parts cannot be disassembled without damage

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7
Q

what does it mean when a link is rigid

A

The linking mechanism does not allow for movement between parts

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8
Q

what does it mean when the link is elastic

A

linking mechanism allows the parts to change position

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9
Q

what is the function of a guiding control

A

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

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10
Q

what are the three types of guiding controls

A

translational, rotational, and helical

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11
Q

what is a power supply

A

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

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12
Q

what are some types of power supplies

A

battery, electrical outlet, and photovoltaic cell

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13
Q

what is a conductor

A

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

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14
Q

what is an insulator

A

A component that prevents the flow of electrons

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15
Q

what is protection

A

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

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16
Q

what factors can affect electrical conductivity

A

temperature and length

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17
Q

how does temperature electrical conductivity

A

The colder the circuit the better

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18
Q

how does the length of a wire affect the electrical conductivity

A

shorter the wire better

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19
Q

what is a control

A

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

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20
Q

what are different types of switches

A

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

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21
Q

what is the transformation of energy in a lightbulb

A

electrical energy—>light and heat

22
Q

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

A

electrical energy—->chemical energy and heat

23
Q

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

A

Chemical energy—->electrical energy and heat

24
Q

what is the transformation of energy in a motor

A

electrical energy—->mechanical energy and heat and sound

25
Q

what is the transformation of energy with a speaker

A

electrical energy—->sound mechanical and heat energy

26
Q

what is a constraint

A

an element of external forces on the material

27
Q

what is compression

A

pushing together an object

28
Q

what is tension

A

pulling an object apart

29
Q

what is torsion

A

twisting an object

30
Q

what is deflection

A

bending an object

31
Q

what is shearing

A

cutting an object

32
Q

what is a mechanical property

A

how a material reacts when subjected to one or more constraints

33
Q

what are the main mechanical properties

A

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

34
Q

what is hardness

A

The ability to resist indentation or abrasion

35
Q

what is elasticity

A

ability to return to their original shape undergoing a constraint

36
Q

what is resilience

A

ability to resist shock without breaking

37
Q

what is ductility

A

ability to stretch without breaking

38
Q

what is malleability

A

ability to be flattened or bent without breaking

39
Q

what is stiffness

A

ability to retain shape when subjected to various constraints

40
Q

what is corrosion resistant

A

ability to resist corrosion (rest, etc.)

41
Q

what is electrical conductivity

A

ability to conduct electricity

42
Q

what is thermal conductivity

A

ability to conduct heat

43
Q

what is thermoplastic

A

it can be heated and molded into new shapes

44
Q

what are the two types of plastic

A

thermoplastics and thermosetting

45
Q

what is thermosetting

A

plastic that cannot be heated and molded into new shapes

46
Q

what are some properties of ceramics

A

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

47
Q

how can we prevent degradation with penetration of liquids

A

add waterproof coating

48
Q

how can we prevent degradation with oxidation

A

add antioxidants

49
Q

how can we prevent degradation with UV rays

A

add dark colors to absorb the UV rays

50
Q

what is linking

A

The connection of two or more parts

Science ST (3 decks)

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