PLASTICS
ORIGIN AND PROPERTIES
1. Plastics that cannot be used in situations where high temperatures are requiered.
resistant low melting point ductile
2. Plastics made from petroleum products.
Impermeable biodegradable non-biodegradable
3. Plastics that can be stretched, bended, twisted and compressed.
Light resistant ductile
4. Plastics made with compounds extracted from petroleum
Biodegradable synthetic natural
5. Plastics that can be pressed into sheets.
Maleable insulators resistant
6. Plastics that can be broken down and are environmentally friendly.
Light insulators biodegradable
7. Plastics that are good electrical, termal and acoustic nonconductor.
Resistant to oxidation insulators impermeable
8. Plastics obtained directly from vegetable and animal sources.
Non-biodegradable impermeable natural
9. Plastics with a typical density of 0.9 to 1.3 grams per cubic centrimetre.
Light maleable resistant to oxidation
10. Plastics that compete well against metal when they are exposed to the weather
Resistant resistant to oxidation reciclable
TYPES
11. ……………………………. is a thermoplastic plastics used for the production of textiles and
tennis racket strings.
12. ………………………………. is a light, resistant and quite hard thermosetting plastic used in
kitchen surfaces.
13. …………………………………….. is a flexible thermoplastic used in bottles and packaging for
higiene products.
14. ………………………………………………. is a spongy, soft and adhesive elastormer plastic used
in foam and glue.
15. …………………………………… is a non stick and heat-resistant thermoplastic used for
covering aeroplanes and cooking utensils.
16. …………………………………………. is an electrical insulator and heat-resistant used in plugs
and handles.
17. ………………………………………………………………………………… is a transparent plastic used in
packaging for food and drinks.
18. ………………………………………………………… is resitant to chemical agents used in shoe soles.
19. ……………………………………………………………….. resists heat up to 200ºC.
20. ……………………………………………… is used in diving suits.
21. …………………………………………….. is a transparent and impact-resistant thermoplastic
used in car headlights.
22. ……………………………………… is a transparent film used for wrapping food.
23. …………………………… is a waterproof thermoplastic used in water pipes.
24. …………………………………………….. is a tranplarrent plastic used in CD cases.
25. ………………………………………………… is used for packaging, and termal and acoustic
insulation.
MODIFICATION TECHNIQUES
26. A ………………… is used to cut large and rigid sheets.
Ruler jigsaw hacksaw
27. A …………………. is used to draw parallel or perpendicular lines.
Carpenter’s square sandpaper ruler
28. A ………….. is used to make very precise cuts and has butterfly bolts.
Scissors hacksaw utility knife
29. A ……………… is wrapped around a piece of Wood.
Belt dander punch sandpaper
30. A ……….. is used to cut thick thermoplastic materials.
Hot wire cutter punch jjigsaw
31. A ……………… is a semicircular tool to measure angles.
Drill protactor file
32. A ………….. has a grooved Surface to remove large amounts of hard materials.
Orbital sander measuring tape file
33. …………………. Are used to cut soft, flexible sheets which are less tan 1 mm thick.
Drill scissors bolts
34. A …………. has a metal bit that spins quickly to make holes.
Drill hot wire cutter orbital sander
35. An ……………. uses a disc of sandpaper that spins very quickly.
Drill belt sander orbital sander
36. A …………. can be used to cut sheets from different thicknesses from 3 mm to various
centimetres.
Hot wire cutter utility knife punch
37. A …………….. is used to make holes in sheets that are less tan 5 mm thick.
Drill punch scissors
38. A …………….. is used for precise measurements and draw straight lines.
Ruler protactor measuring tape
39. A ……………. Is used to measure straight or curved lines and sufaces.
Ruler protactor measuring tape
40. A …………….. uses a continuous piece of sandpaper placed over two drums.
Orbital sander belt sander sandpaper
PHASES OF THE TECHNOLOGICAL PROCESS
41. The ……………………….. consist of organizing the execution phase by dividing i tinto
simple, organized procedures.
Evaluating work plan searching of information
42. A work plan should be drafted with specific tasks.
Executing the desing evaluating need analysing the need
43. Look for different sources and analyse the solutions.
Analysing the need generating and selecting ideas executing the desing
44. Identify the need and define the conditions.
Searching for information evaluating need analysing the need
45. Put into practice and make decisions about the most suitable to implement.
Searching for information executing the desing generating ideas
46. Determine whether the problema has been solved
Evaluating analysing the need executing the design
