Plastics Quiz

Question 1 Which type of plastics cannot be reshaped or remoulded once set? Thermosetting plastics shiny plastics Thermoplasticsbrittle plastics

Incorrect answer Thermoplastics can be reshaped because the bond between the molecules is weak, and becomes weaker when they are reheated. Try again

Incorrect answer ‘Shiny’ is a property of plastics Try again

Incorrect answer ‘Brittle’ is a property of plastics Try again

Correct answer! 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. Next question

Question 2 Which of the following plastics is NOT a Thermosetting plastic? PolyurethaneEpoxy resin Polyester resinAcrylic

Incorrect answer Polyurethane is a Thermosetting plastic. It forms the basis of many paints and varnishes because it is very tough and has water resistant qualities. Try again

Incorrect answer 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. Try again

Incorrect answer Epoxy resin is used as an adhesive, it is also used in fibre reinforced plastics such as glass reinforced plastic and graphite reinforced plastic. Try again

Correct answer! 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. Next question

Question 3 What does CAD stand for? Computer Art Design Create And Design Computer Aided Design Computer Aided Drawing

Incorrect answer Try again

Correct answer! 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? Next question

Question 4 What type of plastic is used to make disposable cups, cutlery, and disposable food containers? Foamed polystyrene High density polyethylene AcrylicLow density polyethylene

Incorrect answer 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 Try again

Incorrect answer 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 Try again

Incorrect answer 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 Try again

Correct answer! 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 Next question

Question 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

Incorrect answer Plastic is not stronger that stainless steel Try again

Incorrect answer Plastics are a relatively cheap material to buy Try again

Incorrect answer The first plastics were made around 1860, the battle of Hastings happened in 1066! Try again

Correct answer! Plastics are a man-made material. They are usually oil or petroleum based. Next question

Question 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

Incorrect answer Plastics are long lasting Try again

Incorrect answer Plastics are colourful and durable Try again

Incorrect answer Plastics are easy to shape Try again

Correct answer! Plastics do not rust, metals which contain steel will rust Next question

Question 7 What piece of software would be used to operate the laser cutter Techsoft 2D Design Microsoft Publisher Microsoft WordAdobe Macromedia Fireworks

Incorrect answer Microsoft Word is a word processing package, it cannot be used to operate the laser cutter Try again

Incorrect answer Microsoft Publisher can be used for laying out design work, but it cannot be used for operating the laser cutter Try again

Incorrect answer 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. Try again

Correct answer! Techsoft 2D Design is used to operate the laser cutter. Next question

Question 8 Which process would you NOT use the CAM Machine (laser cutter) for? Engraving plasticCutting vinyl Cutting plasticWelding plastic

Incorrect answer The CAM Machine (laser cutter) can be used for engraving onto a range of materials, including plastics Try again

Incorrect answer The CAM Machine (laser cutter) can be used for cutting vinyl Try again

Incorrect answer The CAM Machine (laser cutter) can be used for cutting a range of materials, including plastics Try again

Correct answer! 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. Next question

Question 9 What does CAM stand for? Computer Aided Marketing Computer Added Materials Computer Added Manufacture Computer Aided Manufacture

Incorrect answer Try again

Correct answer! 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. Next question

Question 10 Which of the following would be a good method for bonding acrylic parts together Pritt stickGlue such as Araldyte or Tensol Cement Double sided sticky tape Flux

Incorrect answer Pritt Stick is used for glueing paper and card Try again

Incorrect answer Double sided tape would be difficult to apply neatly. It would also be weak Try again

Incorrect answer Flux is used for bonding metals Try again

Correct answer! 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 Next question

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