materials science principles

Question 1

what are the properties of iron

Answer 1

-heavy
-ferrous metal
-high melting point

Question 2

what are the common uses of iron

Answer 2

-fences and gates and stove
-structural supports before steel

Question 3

what is the reason for the use of iron

Answer 3

-common element mined worldwide
-resistant to high temperatures but can be formed and shaped when heated providing decorative structures
-prone to oxidiizng

Question 4

what are the properties of steel

Answer 4

technically an alloy, made from iron and carbon

Question 5

what are the common uses of steel

Answer 5

-structural supports
- rebar
-catenary wires
-cable reinforcement
-sheet materials such as stainless steel sinks or slashbacks

Question 6

what is a rebar

Answer 6

a steel rod or mesh used to strengthen concrete and masonry structures

Question 7

what are catenary wires

Answer 7

a curved wire or rope that supports cables and other objects:

Question 8

what are splashbacks

Answer 8

a sheet of material that’s attached to a wall to protect it from splashes, spills, and other messes

Question 9

what are the reasons for the use of steel

Answer 9

very dense material which provides long lasting structural support

Question 10

what are the properties of copper

Answer 10

-fairy soft but rigid
-non ferrous metal
-not pure and mixed to make an alloy
- corrosion resistant
-good electrical conductor

Question 11

what are the common uses for copper

Answer 11

-pipes
-cable conductors
-architectural features

Question 12

what are the reasons for using copper

Answer 12

-easily recycled
-durable
-corrosion resistant
-low thermal expansion
- clean from bacteria

Question 13

what are the properties of aluminium

Answer 13

-very light weight
- durable non ferrous metal
- corrosion resistant to weather

Question 14

what are the reason for using aluminium

Answer 14

-low thermal expansion
-easily formed or fabricated
-lightweight material

Question 15

what are the common uses of aluminium

Answer 15

-used as a cable conductor where light weight heavy duty cables are needed
-used for window frames
-used for flexible ducting systems

Question 16

what is a flexible ducting system

Answer 16

a type of ductwork that is made of flexible materials and can be bent, twisted, or stretched to fit into different spaces

Question 17

what are the properties of alloys

Answer 17

customised metals made by adding different metals together
can be ferrous if iron or steel is used in the process

Question 18

what are the common uses of an alloy

Answer 18

stainless steel
chromium added to steel

Question 19

what is the reason for the us of alloys

Answer 19

its ability to produce a material for an intended application such as low thermal expansion materials or corrosion resistant metals

Question 20

what is a ferrous metal

Answer 20

a metal that contains iron that is magnetic

Question 21

what are the properties of thermosetting plastics and thermoplastics

Answer 21

soft plastics which are more flexible and suitable for higher temperatures than general pvc

Question 22

what are the common uses for thermosetting plastics and thermoplastics

Answer 22

cable insulation and sheathing

Question 23

what is sheathing

Answer 23

a covering of supporting structure in a building

Question 24

what is the reason for the use of thermosetting plastic and thermoplastic

Answer 24

-flexible
-can operate at high temperatures while remaining good insulators

Question 25

what is the properties of unplasticized polyvinyl chloride (uPVC)

Answer 25

more rigid material than PVC but has lower thermal expansion rate

Question 26

what are the common uses of uPVC

Answer 26

-window and door frames
-guttering, facias and cladding

Question 27

what are claddings

Answer 27

claddings are an extra layer placed on building to protect it from elements and improving its appearance

Question 28

what are facias

Answer 28

long straight boards that run along the end of roof and are what create a base for guttering’s

Question 29

what are the reasons for the use of uPVC

Answer 29

-does not expand at the same rate as PVC
- Durable, non- corrosive product
-

Question 30

what are the properties of rubber

Answer 30

very flexible material which can maintain electrical insulation at higher temperatures such as 125 degrees

Question 31

what are common uses of rubber

Answer 31

• cable insulation
  -flexible joints
  -water seals

Question 32

what is the reason for the use of rubber

Answer 32

it is a highly durable yet flexible material

Question 33

what are the properties of ceramics

Answer 33

-include a broad range of materials manufactured from minerals, sometimes with added metals to provide high degrees of strength
-hard, durable and resistant to heat and fire

Question 34

what are the common uses to ceramics

Answer 34

-heat resistant bricks(firebricks)
-tiles, sinks and worktops
-retain and slowly release heat in storage heaters
-electrical insulators in high temperature applications

Question 35

what is the reason for the use of ceramics

Answer 35

high durability when exposed to heat
corrosion resistant, tough msterials

Question 36

what are the properties of plaster

Answer 36

made from gypsum lime or cement mixed with water and sand

Question 37

what are the common uses for plaster

Answer 37

-provides smooth finish to walls and ceilings
-can be moulded to make decorative features
- can be manufactured into sheets for boarding and partitioning

Question 38

what is the reason we use plaster

Answer 38

• cheap to manufacture
  when in a wet state is easy to apply
• can provide a reasonable fire barrier slowing the spread in the building

Question 39

what are the properties of concrete

Answer 39

contains aggregate, sand and binder such as cement
-sometimes contains additives to give flexibility or quick drying properties

Question 40

what are the common uses for concrete

Answer 40

building foundations or supporting structures when used with reinforcement bars such as steel

Question 41

what is the reason we use concrete

Answer 41

cheap to produce and easy to lay in a wet state, as it flows into place
-when tamped down leaves no air gaps or unfilled spaces