Plastics QuizPlastics Quiz
Question 1Question 1
Which type of plastics cannot be reshaped or remoulded once set?
Thermosetting plastics
shiny plastics
Thermoplastics brittle plastics
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Thermoplastics can be reshaped
because the bond between the molecules
is weak, and becomes weaker when they
are reheated.
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‘Shiny’ is a property of plastics
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‘Brittle’ is a property of plastics
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The molecules of Thermosetting plastics are cross linked in
three dimensions and this is why they cannot be reshaped
or recycled. The bond between the molecules is very
strong. Once 'set' these plastics cannot be reheated to
soften, shape and mould.
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Question 2Question 2
Which of the following plastics is Which of the following plastics is NOTNOT a a Thermosetting plastic?Thermosetting plastic?
Polyurethane Epoxy resin
Polyester resin Acrylic
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Polyurethane is a Thermosetting plastic.
It forms the basis of many paints and varnishes because
it is very tough and has water resistant qualities.
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Polyester resin is a Thermosetting plastic. When resins are
combined with a material such as fibre glass the result is a
very tough material that can resist impact. It is used in car
body repairs, sailing boats, corrugated sheet because of its
lightness, toughness and resistance to water.
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Epoxy resin is used as an adhesive, it is also used in
fibre reinforced plastics such as glass reinforced plastic and
graphite reinforced plastic.
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Acrylic is a Thermoplastic (Also known also as PERSPEX).
This is the most common plastic in a school workshop.
It is purchased usually in the form of sheets and comes in a
range of colours. It can be translucent (e.g. smoked),
transparent or opaque.
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Question 3Question 3
What does CAD stand for?
Computer Art Design
Create And Design
Computer Aided Design
Computer Aided Drawing
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Computer Aided Design is when software such as
Techsoft 2D Design is used to generate design work. It has
many advantages over drawing by hand, accuracy is one.
Can you think of any others?
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Question 4Question 4
What type of plastic is used to make disposable cups, cutlery, and disposable food containers?
Foamed polystyrene
High density polyethylene
Acrylic Low density polyethylene
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Low density polyethylene is a Thermoplastic made from
petroleum, it is commonly used to make items such a as
playground slides, plastic bags, and plastic wraps
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High density polyethylene is a Thermoplastic made from
petroleum, it is commonly used to make items such as
folding tables, folding chairs, storgae sheds and bottle caps
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Acrylic is a Thermoplastic which is commonly used in
schools. It is also used to make items such as sinks,
baths, door handles, signs, and technical models
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Foamed polystyrene is used to make items such as
disposable cups, cutlery, and containers. Polystyrene can
be recycled, but it does not biodegrade. It is often abundant
as a form of pollution in the outdoor environment
particularly along shores and waterways
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Question 5Question 5
Which of these statements is correct….?
Plastic is stronger that stainless steel
Plastic is a man-made material
Plastics are relatively expensive
The first plastics were made in 1066
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Plastic is not stronger that stainless steel
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Plastics are a relatively cheap material to buy
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The first plastics were made around 1860, the battle of
Hastings happened in 1066!
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Plastics are a man-made material.
They are usually oil or petroleum based.
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Question 6Question 6
Which statement is wrong?
Plastics are long lasting
Plastics are colourful and durable
Plastics are easy to shape
Plastics will rust if left outside
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Plastics are long lasting
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Plastics are colourful and durable
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Plastics are easy to shape
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Plastics do not rust, metals which contain steel will rust
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Question 7Question 7
What piece of software would be used to operate the laser cutter
Techsoft 2D Design
Microsoft Publisher
Microsoft Word Adobe Macromedia Fireworks
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Microsoft Word is a word processing package, it cannot be
used to operate the laser cutter
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Microsoft Publisher can be used for laying out design work,
but it cannot be used for operating the laser cutter
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Abode Macromedia Fireworks is part of a graphic designing
package called Creative Suite. It can be used to create
graphic elements, but it cannot be used to operate the
laser cutter.
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Techsoft 2D Design is used to operate the laser cutter.
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Question 8Question 8
Which process would you NOT use the CAM Machine (laser cutter) for?
Engraving plastic Cutting vinyl
Cutting plastic Welding plastic
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The CAM Machine (laser cutter) can be used for engraving
onto a range of materials, including plastics
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The CAM Machine (laser cutter) can be used
for cutting vinyl
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The CAM Machine (laser cutter) can be used for cutting a
range of materials, including plastics
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The CAM Machine (laser cutter) cannot be used for welding
plastics. Plastics can be bonded using an adhesive, they
are not welded. Metals are welded.
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Question 9Question 9
What does CAM stand for?
Computer Aided Marketing
Computer Added Materials
Computer Added Manufacture
Computer Aided Manufacture
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The CAM Machine (laser cutter) cannot be used for welding
plastics. Plastics can be bonded using an adhesive, they
are not welded. Metals are welded.
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Question 10Question 10
Which of the following would be a good method for bonding acrylic parts together
Pritt stick Glue such as Araldyte or Tensol Cement
Double sided sticky tape
Flux
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Pritt Stick is used for glueing paper and card
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Double sided tape would be difficult to apply neatly. It
would also be weak
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Flux is used for bonding metals
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Adhesives have many advantages over other methods of
joining plastics, these include:
Adhesives form an invisible joint
Adhesives join irregular shaped surfaces more easily
Adhesives form a seal as well as a bond
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