material properties
What is the ability to retain heat or electricity?
Insulation
define what ferrous means
ferrous metals contain iron
Name one common softwood
red deal or white deal, pine etc
why do we keep the plastic flim on the outside of the plastic we use in the tech room
To protect the plastic from scratching
Give an example of a material we use in technology!
wood, plastics, fabrics, composites etc...
what is the property that allows material to be deformed and return to its original shape
Elasticity
What is an alloy?
A mixture of two or more metals
What is a manufactured/engineered wood?
This wood is made by gluing layers or small layers of wood together
explain why we use plastic in clothes!
We use plastics in clothes to make them longer wear and waterproof
what is a smart material?
these materials can change their properties in response to the environment
Property of material, that is resistant to dent or scratch
hardness
what colour is copper ?
reddish/brown
name 2 hardwoods
Oak,Maple ,Ash etc..
is polypropylene a thermoplastic or thermosetting material?
Thermoplastics
what is a synthetic fibre ?
are a fabric made from plastics/man made materials
Property of material that can be beaten or stretched out in all directions without breaking
Malleability
what is steel made from ?
Carbon and iron
Name one safety consideration you must think of when working with wood
Inhaling dust or splinters
what is a thermosetting plastic ?
a plastic that can be soften by heat only once. Epoxy Resins, polyurethane, polyester, silicone, melamine
list 3 synthetic and 3 natural fabrics
Synthetic -Nylon, Polyester, Acrylic.
Natural - cotton, wool, silk, linen
Name 3 different properties of steel
Strength , hardness Conductivity etc..
Are these materials an alloy?
- aluminum , - bronze, - Copper
- no, - yes, -No
explain what plywood looks like?
layers of wood glued on top of eachother
Polyethylene, polyvinyl chloride, polystyrene, acrylic, nylon, and Teflon are examples of...
thermoplastics.
what is kelvar?
Kevlar is a fiber with incredible strength! it is a fabric commonly used in