Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 195 · 40 questions

Engineer's tip (Find the topic, use the idea): Find the topic: design process, force, machine, lever, structure, material, bridge or scale. Use that lesson’s rule — what is in the middle, load × distance = effort × distance, work = force × distance, real = drawing × scale. Write the calculation before you answer.

1. 1.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
3. 3.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 8 N, a glass sheet 1 N, a wooden plank 3 N, a carpet 5 N. Which surface gave the least friction? (a) a carpet (b) sandpaper (c) a glass sheet (d) a wooden plank
4. 4.🌉 A beam bridge 120 m long is split by piers into 3 equal spans. How long is each span, in metres?
5. 5.Which of these is reduce (use less)? (a) melt glass into new jars (b) print on both sides (c) plant in old tyres (d) melt cans into new cans
6. 6.Which job does an aerospace engineer do? (a) builds rockets (b) plans a dam (c) designs factory machines (d) designs hearing aids
7. 7.Which of these is recycle (make new things)? (a) carry a cloth bag (b) melt cans into new cans (c) plant in old tyres (d) buy less packaging
8. 8.📐 How many centimetres are in 1 metre? (a) 1000 (b) 60 (c) 10 (d) 100
9. 9.🛞 More or less friction: a tyre with deep treads? (a) less friction (b) more friction
10. 10.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
11. 11.🔍 Which is the odd one out? (a) a tall bridge tower (b) a stone in an arch (c) a brick at a wall base (d) a swing chain
12. 12.🔍 Which is the odd one out? (a) float for 1 minute (b) finish in 40 minutes (c) hold up 500 g (d) carry 10 coins
13. 13.Which of these happens in the Test step? (a) check it against goals (b) make it better, retest (c) list the materials (d) find the limits
14. 14.💪 Which force is at work: an apple falls down? (a) friction (b) gravity (c) magnetic force (d) muscular force
15. 15.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
16. 16.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
17. 17.Which job does a mechanical engineer do? (a) plans a dam (b) designs a gearbox (c) keeps data safe online (d) designs electric motors
18. 18.True or false: to give kind feedback is poor teamwork. (a) False (b) True
19. 19.🪝 A winch has a wheel of radius 12 cm and an axle of radius 4 cm. What effort on the wheel lifts a 570 N bucket on the axle, in newtons? (ideal)
20. 20.🛞 Is friction helpful or a problem here: machine parts heating up? (a) a problem (b) helpful
21. 21.📐 On a plan, 1 cm stands for 2 m. A real bridge is 40 m long. How long is it on the plan, in centimetres?
22. 22.🔍 Which is the odd one out? (a) be under 30 cm tall (b) use at most 20 straws (c) use only paper and tape (d) lift a cup of water
23. 23.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
24. 24.⚖️ A lever bar balances. The load is 20 N at ? cm from the fulcrum. The effort is 10 N at 20 cm from the fulcrum on the other side. What is the missing distance in centimetres?
25. 25.📋 For a model bridge challenge, is “hold up 500 g” a constraint or a criterion? (a) a criterion (b) a constraint
26. 26.🤝 A team of 2 shares 12 equal jobs fairly. Each job takes 5 minutes. How many minutes does each person work?
27. 27.True or false: a knife edge is a wedge. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a flagpole rope wheel (b) a jar lid (c) a wood screw (d) a screw jack
29. 29.🦺 What protects your eyes when sawing or drilling? (a) safety goggles (b) a cap (c) sunglasses (d) nothing
30. 30.True or false: to help a stuck teammate is poor teamwork. (a) True (b) False
31. 31.🛞 More or less friction: a box pushed on carpet? (a) more friction (b) less friction
32. 32.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 50 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
33. 33.🔄 Which design-process step is it to follow the plan to build? (a) Ask (b) Test (c) Create (d) Plan
34. 34.🧑‍🔧 Which kind of engineer designs a flyover? (a) mechanical (b) civil (c) biomedical (d) chemical
35. 35.🏋️ A force of 50 N pushes a cart 5 m along the floor. How much work is done, in joules?
36. 36.🪝 A well winch has a handle (wheel) of radius 6 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
37. 37.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
38. 38.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) adding cross bracing (c) raising heavy tanks high (d) using flexible joints
39. 39.💪 In a tug of war, one team pulls left with 95 N and the other pulls right with 70 N. What is the size of the net force, in newtons?
40. 40.🛠️ People need to keep food fresh longer. Which invention helps? (a) a bridge (b) a fridge (c) a microscope (d) a lift

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