Technological World Flashcards
what is a direct link
when two parts are joined directly, no third item is present to join them
what is an indirect link
when a third item joins two parts together (screw, glue, etc)
what does it mean if a link is partial
if one part moves the other part it is linked with doesn’t have to
how do you know when a link is complete
if one part moves the part it is linked with also moved
what does it mean when a link is removable
parts can be disassembled without damage
what does it mean when a link is non-removable
parts cannot be disassembled without damage
what does it mean when a link is rigid
The linking mechanism does not allow for movement between parts
what does it mean when the link is elastic
linking mechanism allows the parts to change position
what is the function of a guiding control
allows a minimum/maximum amount of movement between two or more parts
what are the three types of guiding controls
translational, rotational, and helical
what is a power supply
component that can generate or provide the power that makes an electrical current in a circuit
what are some types of power supplies
battery, electrical outlet, and photovoltaic cell
what is a conductor
component that can transmit an electrical current from one part of a circuit to another
what is an insulator
A component that prevents the flow of electrons
what is protection
component that can automatically stop current flow in case of a power source
what factors can affect electrical conductivity
temperature and length
how does temperature electrical conductivity
The colder the circuit the better
how does the length of a wire affect the electrical conductivity
shorter the wire better
what is a control
The ability to control the travel of electrical current (switch)
what are different types of switches
push button, lever, flip-flop, and magnetic contact switch
what is the transformation of energy in a lightbulb
electrical energy—>light and heat
what is the transformation of energy in a battery when it’s being charged
electrical energy—->chemical energy and heat
what is the transformation of energy in a battery when it’s in use
Chemical energy—->electrical energy and heat
what is the transformation of energy in a motor
electrical energy—->mechanical energy and heat and sound
what is the transformation of energy with a speaker
electrical energy—->sound mechanical and heat energy
what is a constraint
an element of external forces on the material
what is compression
pushing together an object
what is tension
pulling an object apart
what is torsion
twisting an object
what is deflection
bending an object
what is shearing
cutting an object
what is a mechanical property
how a material reacts when subjected to one or more constraints
what are the main mechanical properties
hardness, elasticity, resilience, ductility, malleability, and stiffness
what is hardness
The ability to resist indentation or abrasion
what is elasticity
ability to return to their original shape undergoing a constraint
what is resilience
ability to resist shock without breaking
what is ductility
ability to stretch without breaking
what is malleability
ability to be flattened or bent without breaking
what is stiffness
ability to retain shape when subjected to various constraints
what is corrosion resistant
ability to resist corrosion (rest, etc.)
what is electrical conductivity
ability to conduct electricity
what is thermal conductivity
ability to conduct heat
what is thermoplastic
it can be heated and molded into new shapes
what are the two types of plastic
thermoplastics and thermosetting
what is thermosetting
plastic that cannot be heated and molded into new shapes
what are some properties of ceramics
Low electrical conductivity, hardness, heat resistant, resistant to corrosion
how can we prevent degradation with penetration of liquids
add waterproof coating
how can we prevent degradation with oxidation
add antioxidants
how can we prevent degradation with UV rays
add dark colors to absorb the UV rays
what is linking
The connection of two or more parts
