REVISION Mr Went’s definition of revision: Short, repeated relearning of knowledge for an exam 5-10mins forcing your brain to recall things you’ve covered already several times, with breaks in between Example of timing: 10 minutes revising 10 minutes break / exercise / eat Repeat above for one hour Repeat above a couple of days later Example of revising activities: Read notes, write some questions, cover up answers or keywords 10 minutes later… Answer your questions and guess covered words

Monday 18th March Complete the table on the Slide 3. Do not look at the answers until you’ve completed the whole table. The answers are on the Slide 4. GOOD: Check your answers BETTER: ask a parent / sibling to check your answers and tell you how many are wrong (with perhaps some clues). Then recheck your answers and correct.

Week 1 - Monday 18th March Ferrous Pure Complete the table. Do not look at the answers until you have answered all. One has been completed for you Metal name Ferrous / Non Ferrous Pure / Alloy Iron Ferrous Pure Aluminium Bronze High-Carbon Steel Titanium Copper High speed steel Brass Zinc Tin Lead Stainless steel

Ferrous Pure Metal name Ferrous / Non Ferrous Pure / Alloy Iron Aluminium Non-Ferrous Bronze Alloy High-Carbon Steel Titanium Copper High speed steel Brass Zinc Tin Lead Stainless steel

Wednesday 20th March 1 Give the correct answers to a parent / sibling to test you Ask them to ask you the following type of questions They should do so in a random order Examples: Is Copper a ferrous or non-ferrous metal? Is High Speed Steel a Pure metal or an alloy? 2 Answer the questions on slide 7 and revise the answers on slide 8

Wednesday 20th March Ferrous Pure Metal name Ferrous / Non Ferrous Pure / Alloy Iron Ferrous Pure Aluminium Non-Ferrous Bronze Alloy High-Carbon Steel Titanium Copper High speed steel Brass Zinc Tin Lead Stainless steel

Questions 1 Explain, giving one example, what is meant by the term 'non-ferrous alloy'. 2 Give 2 properties of copper that make it suitable for making electric cables 3 Give one example of a use for each of these materials 1 - Cast Iron 2 - Acrylonitrile-Butadiene-Styrene (ABS) 3 - High Speed Steel 4 Explain why an alloy might be preferred to a pure metal for making an engineered product. 5 Give two properties of brass that make it suitable for making electrical components 6 Name two specific engineering materials that are often supplied in sheet form. 7  Name a suitable material for the sink. Give a reason for your choice of material. 8  Name a suitable material for the Bench Vice Jaw, and a reason for your choice. 9 Give 3 characteristics of materials that should be considered when choosing a material for use in an engineered product. 10 Give 2 reasons why a non-ferrous metal might be used for making a product rather than a ferrous metal 11 Explain the advantage of metal alloys compared with pure metals 12 Here is a list of engineering materials. ABS, Brass, Bronze, Carbon fibre, Cast iron, GRP, High Speed Steel, HIPS, Polyester resin, Stainless steel, Urea-formaldehyde, ZincM Which 3 are ferrous metals? 13 Here is a list of engineering materials. ABS, Brass, Bronze, Carbon fibre, Cast iron, GRP, High Speed Steel, HIPS, Polyester resin, Stainless steel, Urea-formaldehyde, ZincM Which 2 are non-ferrous alloys? 14 Give 3 reasons why a thermoplastic material might be used for a product rather than a metal 15 Give 2 properties of copper that make it suitable for the wires in electric cables 16 Explain why copper is not used in overhead power transmission cables. 17 Case hardening is a heat treatment process. Name 2 other heat treatment processes.

Questions 1 Explanation to include reference to a metallic mixture (1) not containing iron 2 Conductive/conducts electricity Ductile Corrosion resistant Malleable 3 e.g. cast iron – machine bases; garden benches ABS – home appliance casings; vacuum formed items; cycle helmets High speed steel – cutting tools/tool bits; drills 4 Clear explanation: e.g. Mixing two or more metals together(1) can produce more useful properties(1) for use in a product. 5 Machinability Conductivity Corrosion resistance Wear resistance 6 steel; stainless steel; brass; copper, aluminium alloys; ABS; HIPS; Tinplate; MDF; plywood; hardboard 7 Stainless steel Aluminium Will not rust when gets wet. 8 Cast iron / Cast steel. Easy to cast into shape / Very strong material. 9 One mark for each of three relevant characteristics. Examples: - Relative cost - Availability - Ease of use - Safety in use - Form of supply - Sustainability 10 Up to two marks for each of two valid reasons Examples: - Non-ferrous metals are often easier to form (1) into complex shapes (1) than ferrous metals - Non-ferrous metal give a better finish (1) as they don’t go rusty (1) like ferrous metals 11 Up to three marks for a clear explanation. Example: - Alloys are combinations of metals and combine the properties of those metals (1) to give different/improved overall characteristics (1). - They are also often cheaper than using the pure metal alone (1) 12 Cast iron High Speed Steel Stainless steel 13 Brass Bronze 14 Examples: Thermoplastics are: - generally easier to form into complex shapes/manufacture - available in a wide range of colours - generally more suited to mass production methods - self-finishing / don’t need surface finishing - corrosion resistant - electrically insulating 15 Ductile Conductive Malleable / flexible /easy to bend Corrosion resistance Non magnetic 16 - Copper is quite a heavy metal (1) and this would make the cables sag between the pylons (1) so they may touch the ground and be dangerous (1). - The cables would sag(1) because copper is heavy (1), so there would have to be more pylons and closer together(1). - The power lines system would cost more (1) because copper is expensive (1) and also more pylons would need to be made (1). 17 - Hardening - Annealing - Tempering - Normalising - Nitriding