KS4 Student Questions Booklet Classwork and Home learning

Knowledge and Understanding Level 1 – 2 Engineering KS4 Student Q & A Booklet 2018/2020

WJEC Level 1-2 Engineering

KS4 Student Questions Booklet

Classwork and Home learning

Name:- ………………….…………………………………………………………….

Form:- …………………………

Date:- …………………………

This booklet is to be kept neat and tidy at all times.

Answer all questions set; you will need to answer Home Learning Tasks on additional sheets of paper.

You will find answers on www.pcsaengineers.uk, and www.technologystudent.com.

Your final examination is handwritten, so ensure that your hand writing is legible and neat.

Fully completing this booklet will help you to develop the knowledge and skills that you need for success in your examination, Unit 3 (9793): Solving Engineering Problems.

THERE ARE BLANK PAGES AT THE BACK OF THE BOOKLET FOR YOU TO

MAKE NOTES AND PRODUCE ANNOTATED SKETCHES ON

An Isometric Grid has been included on the back page of this Booklet.

http://www.pcsaengineers.uk/

http://www.technologystudent.com/


There are 14 sections to this booklet

Section 1:- Health and safety…………………………………………………………….page 3 Your practical training log.

Section 2:- Graphic Techniques………………………………………………………….page 4

Convert between isometric and 3rd angle Orthographic projections.

Section 3:-Materials Knowledge: Material Properties……………………..…page 5 Tensile strength, Hardness, Toughness, Malleability, Ductility, Conductivity, Corrosive

resistance, Environmental degradation, Elasticity.

Section 4:-Materials Knowledge: Material Testing……………..….………….page 6

Destructive and non-destructive methods.

Section 5:-Materials Knowledge: Wood…………………………………..………..page 8 Hardwoods, softwoods, artificial boards

Section 6:- Materials Knowledge: Metal………………………………….……….page 10 Ferrous, Non-ferrous, alloys.

Section 7:- Materials Knowledge: Plastics…………………………….…………..page 12

Thermoset, thermoplastic.

Section 8:- Materials Knowledge: Smart Materials..............................page 17

Thermochromic ink, Polymorth, Nitinol, D30, Quantum tunnelling composite

Section 9:- Materials Knowledge: Composite Materials…………………..page 19 Carbon fibre, GRP, MDF, Plywood, Reinforced Concrete.

Section 10:- Engineering Processes…………………………………………………..page 20 Marking out, Cutting, Finishing, Preparing, Shaping, Drilling, Turning, Brazing, Joining

(Permanent and Temporary fixings) , Filing, Soldering

Section 11:- Electronics in Engineering;…………………..……………………….page 21

Circuits and Circuit Symbols

Section 12:- Effects of Engineering Achievements……………….…..……….page 24

Modern Engineering in Society

Section 13:- Engineering and the Environment…………………………………page 26 Recycling, Sustainability

Section 14:- Mathematics in Engineering………………………………..………..page 30

Use of formulae (Ohms law & Efficiency), Areas and volumes of geometric shapes, Calculation,

Measuring, Estimation, Mean, Units of measurement, Metric (Metres, millimetres) Imperial

(yards, inches)


Section 1:- Health and Safety.

Training Log; Record your hand tools, portable and fixed equipment training

Engineering Processes

Marking out Cutting Finishing Preparing Shaping Drilling Turning Brazing

Joining Permanent & Temporary fixings Filing Soldering

Engineering Applications

For material removal For shaping and manipulation For joining and assembly For

heat and chemical treatment

Hand tools

Name of Tool Process/Application Date of Training Signature

Portable Equipment

Name of Equipment

Process/Application Date of Training Signature

Fixed Equipment

Name of Equipment

Process/Application Date of Training Signature


Section 2:- Graphic Techniques.

Convert each isometric drawing into a third Angle Orthographic Projection

Add shading to the Isometric to resemble polished steel.


Section 3:-Materials Knowledge: Material Properties.

Complete the following table for material properties Material property Definition of Material property

Tensile strength

Hardness

Toughness

Malleability

Ductility

Conductivity

Corrosive resistance

Environmental degradation

Elasticity

Strength to Weight Ratio


Section 4:-Materials Knowledge: Material Testing. Destructive and non-destructive methods.

Engineers need to be able to test materials so that they can understand their properties.

Go to http://www.technologystudent.com/joints/joindex.htm, and look for “PROPERTIES

OF MATERIALS - WORKSHOP TESTING”, to help you with your research. Here you will find

useful worksheets that will help you with material testing.

These are activities that can be carried out in the workshop, and you could add

photographs to evidence your practical testing of materials.

The image below shows techniques that can be used to find out about Material Properties

Carry out these tests in the workshop and add annotated images to evidence

each of your experiments.

What other material testing methods could you perform?

Go to Page 31, can you take any inspiration from the Equations of Properties?

Heat metal

with gas flame Tough Brittle Impact

resistance

What load will permanently

deform the material ?

What load can be taken and still return to original shape?

http://www.technologystudent.com/joints/joindex.htm


Material Testing. Add your annotated images to this page


Section 5:-Materials Knowledge: Wood.

Hardwoods, softwoods, artificial boards

I. Multiple Choice Questions

1. What type of tree does hardwood come

from?

a. Coniferous

b. Deciduous or broad-leafed trees

c. Carnivorous

d. Decidueye or broad-leafed trees

2. How do you identify a hardwood tree?

a. Doesn’t lose its leaves

b. A wide trunk

c. Loses its leaves during winter

d. Cones and needles

3. What type of tree does softwood come from?

a. Coniferous

b. Deciduous or broad-leafed trees

c. Carnivorous

d. Decidueye or broad-leafed trees

4. How do you identify a softwood tree?

a. Leaves all year round

b. A wide trunk

c. Grows leaves rather than needles

d. Loses its leaves in winter

5. Softwood is commonly used in:

a. Expensive indoor furniture

b. Outdoor garden furniture

c. DIY and cheap furniture

d. Boat building

6. Hardwood is commonly used in:

a. Doors and staircases

b. DIY and cheap furniture

c. Expensive furniture

d. Construction – roof, stud walls etc.

7. Which of these woods is not a hardwood?

a. Beech

b. Oak

c. Teak

d. Scots pine

8. Which of these woods is not softwood?

a. Balsa

b. Yellow Cedar

c. Scots pine

d. Spruce

9. Which of these statements about manufactured boards are false?

a. Inexpensive and often used instead of woods

b. Manufactured boards are often made from waste materials

c. Manufactured boards are often covered with thin layers of real wood, these are called

veneers

d. More expensive than real wood

10. What type of manufactured board is often used in kitchens or cheap bedroom furniture covered with a

veneer or plastic coating?

a. MDF

b. Hardboard

c. Plywood

d. Chipboard

Why is this material used, and what is the name of the plastic used as a

coating? ……………………………………………………………………………………………………

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11. What type of manufactured board is used for strong panelling in building construction?

a. Plywood

b. MDF

c. Hardboard

d. Blackboard

12. Medium Density Fibreboard (MDF) is:

a. Thin layers of veneers glued at 90 degree angles

b. Sawdust mixed with glue

c. Thin strips of wood glued between veneers or plastic coating

d. Wood chips glued together

Home learning Tasks: Answer on separate sheet of paper

1. Explain the difference between hardwoods and softwoods

2. Why are hardwoods more expensive than softwoods?

3. Name a type of softwood and identify a use

4. Name a hardwood and identify a use

5. Name a type of manufactured board and describe its properties

6. Identify some advantages and disadvantages in the use of manufactured boards instead of real wood

7. What can be used to improve the appearance and durability of manufactured boards?

8. What is meant by stock form? Can you give two examples?

9. What types of fixings can be used to join timbers and manufactured boards?

10. Can you identify some wood joints? Sketch two examples

Marking & Assessment

Why is this material used, and what variations are there?

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Section 6:- Materials Knowledge: Metal.

Ferrous, Non-ferrous & alloys.


1. What do all ferrous metals contain? a. Ferrite

b. Manganese c. Steel d. Iron

2. Ferrous metals are also all what? a. Plastics b. Magnetic c. Brittle d. Hard

3. Ferrous metals oxidise in the form of

what? a. Pitting b. Rust c. Tarnish d. Hammerite

4. Name a suitable product for cast iron. a. A matchbox toy car b. Hacksaw blade c. A gate d. Heavy machine base

5. Name a suitable product for mild steel.

a. Machine bases b. Screws and nails c. Lathe tools d. Springs and garden

shears

6. What is stainless steel alloyed with? a. Copper b. Chrome and Nickel c. Nickel d. Chrome

7. What is the definition of an alloy?

a. Two non-ferrous metals combined b. A metal and another metal(s) combined to improve its working properties c. A ferrous and non-ferrous metal combined d. A metal and another metal(s) or element(s) combined to improve its working

properties

8. The following are all non-ferrous metals a. Copper, zinc, aluminium, brass b. Copper, brass, aluminium, nickel c. Copper, zinc, aluminium, nickel d. Galvanised steel, zinc, aluminium, nickel

9. What are the properties of copper?

a. Very ductile; good conductor of heat and electricity; malleable; corrodes easily (oxidises blue); solders well

b. Very hard; good conductor of heat and electricity; malleable; corrosion resistant (oxidises blue); solders well

c. Very ductile; good conductor of heat and electricity; malleable; corrosion resistant (oxidises blue); solders well

d. Very Stiff; good conductor of heat and electricity; malleable; corrosion resistant (oxidises blue); solders well


10. What are the uses of aluminium? a. Small non-structural castings (match-box cars) batteries b. Electric cable; water pipes; printed circuits; spun hot water tanks c. Foils; pans; window frames (extruded); car wheels; cans d. Coins; magnets; electric guitar strings- almost always alloyed

11. Brass is an alloy of copper and zinc. What are its uses? a. Various cutting tools; blades; spanners wrenches etc. b. Cutlery; surgical instruments c. Tools- bronze age; bearings (porous bronze called oilite); castings for statues;

coins d. Ornaments; door handles; screws; plumbing fittings; clock parts; boat fittings

(naval brass with tin); locks; bearings; zips; components that must not spark – near flammable or explosive materials

12. Traditionally what are aircraft bodies made of?

a. Titanium b. Duralamin c. Aluminium d. Galvanised steel

Home learning Tasks: Answer on separate sheets of paper

1. Explain the differences between ferrous and non-ferrous metals 2. Describe what an alloy is. Give one example of an alloy 3. What is brass an alloy of? 4. Give one common use of brass and explain why it is a suitable material for this use. 5. Describe the properties of stainless steel 6. Explain why copper is used for wiring and water pipes 7. Compare the properties and uses of mild steel and high carbon steels 8. What effect does the heat treatment 'hardening' have on the properties of steel? 9. What effect does the heat treatment 'annealing' have on the properties of steel? 10. Describe three tools that might be used when marking out lines and points for drilling on metal,

and explain how each is used safely. 11. Explain the process for galvanising a metal 12. Why does a surface finish need to be applied to mild steel? 13. What methods can you think of that would be appropriate for surface finishing mild steel?

Making progress: Use this space to write about the progress you have made in your Engineering Course so far.

Why is this material used?

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Section 7:- Materials Knowledge: Plastics.


1. Plastics are a non-renewable resource created from:

a. Oil and gas b. Oil c. Coal d. Gas

2. Plastics are created by

a. Polymerisation b. Cross links c. Monomerisation d. GRP

3. Name two plastics families a. Thermosets and Chain Cross Linked

Polymers b. Thermoplastics and non-

thermoplastics c. Thermoplastics thermosets and

Polymers d. Thermoplastics and Thermosets

4. If thermoplastics are heated they will

a. Stay rigid b. Soften and melt c. Get stress marks d. Burn straight away

5. The reason thermoplastics soften and melt when heated is

a. Because the electrostatic bonds called Van Der Waals Forces weaken and then disappear b. It never has any cross links c. The polymer chains react with each other to create movement d. It is a smart material

6. Thermosets have permanent cross links and are bonded by covalent bonding

a. True b. False c. Only when heated d. Only when they are cold

7. Thermosets are normally two parts mixed -one being a catalyst- and 'go off' as a chemical reaction

a. Endothermic b. False c. Exothermic d. True

8. Urea formaldehyde is used for plug sockets because

a. It can be produced in many colours b. It is stiff tough and resistant to heat c. It will not burn d. It is cheap

9. What thermoset plastic laminate is put on top of chipboard on kitchen work surfaces

a. Epoxy resin laminate b. Urea formaldehyde c. Toughline thermoset polymer d. Melamine Formaldehyde


10. UPVC is used for double glazing window frames because

a. It is weather and chemical resistant, stiff, hard and tough

b. Easy to fit for the workman c. Comes in lots of colours d. More durable than wood or metal

11. Expanded polystyrene is used for disposable coffee cups because

a. It is made from vegetable oil b. It is lightweight and a good insulator

of heat c. It is white and that makes people think

it is hygienic d. It is easily recyclable

12. PET is used for water bottles because

a. Milk bottles are made from the same thermoplastic so it is cheaper

b. It is environmentally friendly c. It is food safe, clear and extrusion

blow moulds well d. It is white

13. Safety helmets are made from ABS because a. It is a thermoset and therefore is good

with heat b. It is yellow c. It is a smart material and changes

colour when hot for safety d. It is tough, hard -scratch resistant- and

has a good finish

14. What is plastic memory? a. A shape memory alloy b. The ability of a plastic sheet to return

to its original shape when reheated c. An injection moulding process d. The definition of a thermoset plastic

15. Acrylic is used for shop signs because a. It is cheap b. It has a high surface finish, comes in

lots of colours and is durable outdoors c. It is not brittle d. It is scratch resistant

16. In GRP the glass fibre matting is added to the polyester resin to

a. Make it malleable b. Add stiffness and toughness and take away brittleness c. Make it as good as carbon fibre d. Make it stronger

17. Nylon is greasy and self-lubricating and is

therefore used for a. Bushes and bearings b. Washing-up bowls c. Clothes d. Nuts and bolts

18. Plasticisers, foamants, fillers and stabilisers are all examples of what

a. Additives for polymers b. Thermoplastics c. Types of polymer d. Thermosets

19. Thermoplastics have to be recycled with the exact same thermoplastic. True or false? a. No you cannot recycle thermoplastics you can recycle thermosets b. Yes because they have very different properties and chemical structure c. No you can put them all together no problem they are very similar d. Yes because the supermarkets make each different plastic a different colour to differentiate

them 20. Plastic bottles are becoming a real problem. How do we deal with this?

a. Limit ourselves to one water bottle a week b. Have one bottle we always refill and stop buying bottled water c. Use glass bottles instead d. Don' t bother it is fine


Extension Tasks: Answer on separate sheets of paper if necessary.

1. State if melamine formaldehyde is a thermoplastic or thermoset polymer

[1 mark]

a. Describe the physical properties of melamine formaldehyde

[2 marks]

b. Name two products made from this polymer

[2 marks]

2. Describe the main stages of producing GRP moulding

such as a bath or boat hull.

[6 marks]


3. This plug socket is made from which material?

a) Melamine Formaldehyde b) Epoxy Resin c) Urea Formaldehyde

[1 mark]

4. Describe the physical properties, of the thermoset plastic above, which make it suitable for electrical

fittings and domestic appliance components

[2 marks]

5. Epoxy resin is a thermoset polymer and is used for what?

[1 mark]

15 Marks

6. This plastic water bottle is made from PET. State if this is a thermoplastic or thermoset.

[1 mark]

a. State two physical properties that make it suitable for a drinks bottle

b. Describe how this bottle will be recycled [2 marks]

7. This double-glazed window frame is made from UPVC

a. It is made by: Extrusion or Injection moulding?

[1 mark]

b. State two physical properties that make it suitable for a window frame

[2 marks]


8. This packaging is made from expanded polystyrene

a. State two physical properties that make it suitable for this purpose [2 marks]

b. Is this a thermoset or thermoplastic? [1 mark]

c. Can this polymer be recycled? [1 mark]

9. The cable flex covering shown in the picture is made from low density polythene.

a. Name two properties of LDPE that make it suitable for this job

[2 marks]

b. Why is it important that pigment is added to the wires during the manufacturing process and not after as per a wood or metal?

[2 marks]

10. The hard hat safety helmet is made from ABS a. Name two properties that make ABS suitable for this product

[2 marks]

b. What process is used to make it? [1 mark]

11. The cog wheel is made from nylon a. Is this a thermoset or thermoplastic? [1 mark]

b. Name two properties that make it suitable for this product

[2 marks]


Section 8:- Materials Knowledge: Smart Materials.

Thermochromic ink, Polymorth, Nitinol, D30, Quantum tunnelling composite

1. What is the main difference between modern

and smart materials

a. There is no difference

b. Modern materials have a reactive

capacity

c. Smart materials are all made form

plastic modern materials are not

d. Smart materials have a reactive

capacity

2. What smart material is also known as Nitinol?

a. Shape memory alloys

b. Straight moulding alloys

c. Shape moulding alloys

d. Strong metallic alloys

e. Super memory alloys

3. Can you identify the correct smart material?

a. Thermomix polymer

b. Thermoregulated polymer

c. Thermodynamic ink

d. Thermosetting polymer

e. Thermochromic ink

f. Thermoform ink

4. What are Nanomaterials? Select the sentence

you think best describes them

a. A material that has been

miniaturised

b. A material that has been altered at

an atomic level

c. A material that has no weight

5. Which sentence states the correct process of using polymorph

a. Place granules in a microwave, heat up until soft, remove and mould into shape

b. Place granules into an oven, heat up until soft, remove and mould into shape

c. Place granules into a hot bowl of water, remove when soft and mould into shape

6. What is the melting range of polymorph?

a. 57-59 degrees Celsius

b. 60-62 degrees Celsius

c. 63-64 degrees Celsius

d. 65-66 degrees Celsius

7. Which sentence best describes what happens to nitinol when an electrical current passes through it?

a. Nothing the electrical current has

no effect

b. The nitinol waves around until the

current is turned off

c. The nitinol reverts to its original

cold forged shape

d. The nitinol starts to glow

8. From the items below can you select which one would be best suited to include the smart material

from your answer in question 3?

a. A mug used for coffee

b. A mug used for milk

9. Select the smart material from the list below

a. Phtotographic glass

b. Reactive glass

c. Toughened glass

d. Glass fibre

e. Frosted glass


10. What can you find out about Quantum tunnelling composite?

11. Select the sentence that best describes quantun tunneling composite

a. QTC is expensive, it can be produced in large quantities and has a very limited range of

response when pressed

b. QTC is very reliable, it does not require any special manufacturing and requires daylight to

function correctly

c. QTC is a natural material, it has a distinctive odour and has a large range of response when

pressed

d. QTC has a proportional response when pressed, it is easy to produce and is low cost

Use this space to design a product that uses a range of Smart Materials. What will the product be used for? Who

will benefit from using it? Let your imagination go. Add lots of annotation.


Section 9:- Materials Knowledge: Composite Materials

Carbon fibre, GRP, MDF, Plywood, Reinforced Concrete, Kevlar, CFRP

1. What is a composite material?

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2. How are the physical properties of a composite material superior to those of a single

material?

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3. Describe one advantage of the composite ‘steel reinforced concrete’ over normal

concrete?

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4. What composite material is used for the manufacture of canoes, car bodies, small

swimming pools, water tanks, surfboards and small boat hulls?

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5. Describe the composition of the material you named above and its manufacture.

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6. What is CFRP?

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7. What are the physical properties of CFRP?

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8. What is Kevlar? Describe the physical properties and some practical applications of this

composite material.

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Section 10:- Engineering Processes.

Marking out, Cutting, Finishing, Preparing, Shaping, Drilling, Turning, Milling,

Brazing, Joining (Permanent and Temporary fixings) , Filing, Soldering

During workshop practical tasks you will develop skills in above Engineering Processes.

Complete the following table as you develop these skills.

Engineering Process Equipment Used/Descriptive Sentence Engineered Product

Marking out,

Cutting,

Finishing,

Preparing,

Shaping,

Drilling,

Turning,

Milling

Brazing,

Joining (Permanent fixings)

Joining (Temporary fixings)

Filing

Soldering


Section 11:- Electronics in Engineering;

Circuits and Circuit Symbols

During your course you will be given the opportunity to construct an electronic circuit.

Electronic Circuits consist of Electronic Components Here are a range of electronic components. What are they? What do they do?


Section 12:- Effects of Engineering Achievements

Modern Engineering in Society, see http://www.pcsaengineers.uk, for help with these questions.

Mechanical, Electronic and Structural Engineers work with Mathematicians, Scientists and Technologists

to create the products and services that we use every day in society.

1. What is mechanical Engineering?

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2. What is Electronic Engineering?

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3. What is Structural Engineering?

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STRUCTURAL ENGINNEERING

Read through Section 12 Unit 3 Effects of Engineering Achievements on www.pcsaengineers.uk

4. What modern materials could you use for bridge building?

5. Explain what properties you need in a material if you are going to build a bridge and why you would need them.

6. Name a famous modern bridge

7. Who designed it?

8. Name the tallest building in the UK

9. Who designed it?

10. What is the frame of the tallest UK building made from and why?




MECHANICAL ENGINEERING

1. What modern materials could you use for an engine block in a car?

2. Explain what properties you need in a material if you are going to build a car engine block and why you would need them.

3. Who designed the first modern internal combustion engine?

4. What was the first mass-produced car?

5. Who designed the WW2 Spitfire?

6. What helped to make the Spitfire one of the fastest fighter planes of the time?

7. What engineering discovery speeded up fighter planes in 1939?

ELECTRONIC ENGINEERING

1. What electronic component changed the way electronic products were designed?

2. Who invented it?

3. What was the best-selling consumer electronic product of the 1960s?

4. Who was responsible for changing the way we use mobile phones?

5. What was his most influential innovation?

6. What company did he work for?


Section 13:- Engineering and the Environment.

Recycling, Sustainability Read through Section 13 Unit 3 Engineering & The Environment on www.pcsaengineers.uk, and then

answer questions.

1. What kind of impact does the mass production of disposable products have on the world and

environment? ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

2. What areas/fields could be affected by the production of a new product?

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3. Engineers need to be aware of the impact their decisions will have on the world. Who is responsible for these new products? Where does that responsibility start and end?

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Product Life Cycle

In the space below draw a product lifecycle analysis for aluminium can of coke that you

would buy from your local shop. Then describe the environmental impact your can of

coke has had on the world in a short paragraph.

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US put China-made parts in F-35 fighter program: According to Pentagon documents reviewed by Reuters, chief U.S. arms

buyer Frank Kendall allowed two F-35 suppliers, Northrop Grumman

and Honeywell International, to use Chinese magnets for the new

warplane's radar system, landing gears and other hardware.

Read the above headline and statement. Explain why this could have happened in terms of engineering and the environment: ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..………………………………………………………………………..………………………………………………………………………………………………………………

In terms of engineering new products/specifying materials, describe each of the following terms: Use

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Disposal

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Recycling

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Transportation

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Sustainability

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Sustainability

1. Select the correct 6 Rs of sustainability

a. Reduce

b. Reorganise

c. Recycle

d. Reuse

e. Rectify

f. Rethink

g. Replicate

h. Refuse

i. recover

j. Repair

k. Retry

2. Which sentence best describes sustainability

a. Sustainability is all about how we design, and use products that can be recycled all the time

to safeguard the world for ourselves and future generations.

b. Sustainability is all about how we design, make and use products to maximise our future

generation’s ability to continuing buying and using products.

c. Sustainability is all about how we design, make and use products that minimise the

depletion of our energy and other resources, which will safeguard the world for ourselves

and future generations.

d. Sustainability is all about how we design, make and use products to maximise their

longevity, allowing us to safeguard the world for ourselves and future generations.

3. Select two of the environmental impacts of extracting oil, ores and timber.

a. Destruction of species habitats

b. Increase in species reproduction

c. Increase in biodiversity

d. Carbon emissions

e. Lowering of harmful gas

f. Expansion of available food stocks

4. Select which sentence would be of a benefit to the environment by reducing the amount of material

used to design a drinking glass.

a. The product becomes smaller, so it will fit in the consumers hand easier.

b. The product becomes lighter, so transporting it uses less fuel.

c. The product becomes more popular, so more people will purchase it.

d. The product becomes slimmer, so will fit in a recycling bin easier.

5. What sentence best describes the process of paper biodegrading?

a. When paper is burnt it biodegrades into the atmopshere

b. When paper is mixed with chemicals in water it biodegrades

c. When paper is left on a composte it biodegrades naturally

6. What does LCA stand for?

a. Long Circular Adjustment

b. Large Cycle Assessment

c. Life Calculating Assessment

d. Large Carbon Assessment

e. Life Cycle Assessment

f. Land Carbon Assessment

g. Landfill Calculating Assessment

7. Why would having affective quality control (QC) in a factory that produces computer keyboards benefit

the environment?

a. The Keyboards would be made

quicker

b. The Keyboard would be really well

produced

c. Less waste would be produced

d. The QC process can be carried out

by a machine making it more

accurate

e. The keyboard would be smaller

f. The keyboard would be more

popular when sold


8. Why would a pair of Beats headphones that are easy to repair be thought of as sustainable?

a. Because they sound great people would not throw the headphones away.

b. Because parts could be repaired you would not need to buy a new pair of headphones.

c. Because Beats are so comfortable and expensive people look after them.

d. Because lots of them would sell so they would keep making them.

9. Why would a bowl made from a polymer that can biodegrade easily be sustainable?

a. The bowl can be used again and again so will not need replacing.

b. The bowl will cost more so the consumer will not want to throw it away.

c. The bowl will return its nutrients to the ground when composted.

d. The bowl can be washed quickly so less water is used when cleaning it.

e. The bowl can be eaten after it has been used, so no material is wasted.

10. Select three things you can do to help reduce your impact on the environment.

a. Turn off the lights in a room when

it is not being used

b. Sit still when outside

c. Pass on unwanted items to a

charity

d. Walk in a straight line whenever

possible

e. Try to eat more vegitables

f. Charge you phone every night

g. Kick a can around not a football

h. Use public transport

i. Eat take out meals more often

j. Buy the latest products all the time

k. Keep any unused products in a box

11. What best descibes built in obsolescence.

a. This is a method used to stimulate consumer demand, by making built in features that are

not available anywhere else.

b. This is a method used to stimulate consumer demand, by using flashy media promotions

that inform consumers how obsolete other competitors products are.

c. This is a method used to stimulate consumer demand, by designing products that are

outdated after limited use.

d. This is a method used to stimulate consumer demand, by using only modern technologies to

promote the product as older methods like newspapers and magazines are outdated.

e. This is a method used to stimulate consumer demand, by building in useful technologies to

modern products making their predasessors obsolete.

Home learning tasks: Sustainability

1. In terms of sustainability discuss the use of glass for a milk bottle.

2. In terms of sustainability discuss the use of plastic for a milk bottle.

3. In terms of sustainability discuss the use of unprotected steel to produce a bike

frame

4. Explain 3 of the 6Rs of sustainability.


Section 14:- Mathematics in Engineering.

Use of formulae (Ohms law & Efficiency), Areas and volumes of geometric

shapes, Calculation, Measuring, Estimation, Mean, Units of measurement,

Metric (Metres, millimetres) Imperial (Pounds, pence)

Read through Section 14 Unit 3 Engineering Mathematical Techniques on

www.pcsaengineers.uk, and then answer questions in the following space, and on extra

sheets of paper.



Mathematical Equations used by Engineers

Below are equations used by engineers to calculate a wide range of properties.

Exercise:

How many of the following equations are you able to produce worked examples for? Can

you state the Units for each of the properties?

Energy efficiency efficiency (%) = (useful energy out ÷ total energy in) x 100%.

power P = E ÷ t power = energy ÷ time

work done W = F x d work done = force x distance

Forces & Motion speed s = d ÷ t speed = distance ÷ time

acceleration a = (v-u) ÷ t acceleration = change in velocity ÷ time

force F = m x a force = mass x acceleration

moment of force m = F x d

moment = force x perpendicular from pivot distance

weight w = m x g weight = mass x gravity

momentum p = m x v momentum = mass x velocity

density d = m ÷ v density = mass ÷ volume

pressure p = F ÷A pressure = force ÷ Area

Electricity power P = V x I power = voltage x current

voltage V = I x R voltage = current x resistance

current I = P ÷ V current = power ÷ voltage

resistance R = V ÷ I resistance = voltage ÷ current

Geometric area - square length of side²

area – rectangle length of side 1 x length of side 2

area – triangle (length of base x height of triangle) ÷ 2

area - circle π x radius²

volume - cube length of side³

volume - pyramid (1/3) x (base area) x height of pyramid

volume - cylinder π x radius² x height of cylinder


Exercise:

How many of the equations are you able to produce worked examples for? Can you

state the Units for each of the properties?


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KS4 Student Questions Booklet Classwork and Home learning

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