Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 312 · 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.🔍 Which is the odd one out? (a) a nut and bolt (b) a bottle cap (c) a wood screw (d) a flagpole rope wheel
2. 2.True or false: a swing chain is in tension (pulled). (a) True (b) False
3. 3.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
4. 4.True or false: a lift helps people make power from sunlight. (a) True (b) False
5. 5.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 10 N, ice 3 N, a glass sheet 4 N, a carpet 6 N. Which surface gave the most friction? (a) ice (b) a glass sheet (c) a carpet (d) sandpaper
6. 6.🔧 Which tool would you use to make a hole in wood? (a) a screwdriver (b) a spirit level (c) a spanner (d) a hand drill
7. 7.🔍 Which is the odd one out? (a) a bicycle (b) a mobile phone (c) a satellite (d) a seashell
8. 8.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
9. 9.Which of these is a beam bridge? (a) a rope bridge in hills (b) stones squeezed together (c) a flat deck on piers (d) deck hangs from cables
10. 10.📋 Constraint: the tower must be no taller than 30 cm. The team’s tower is 24 cm tall. Is it within the constraint? (a) Yes (b) No
11. 11.♻️ Reduce, reuse or recycle: pulp old paper? (a) recycle (b) reuse (c) reduce
12. 12.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) build it with straws
13. 13.🔺 A flat frame has 5 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
14. 14.🔍 Which is the odd one out? (a) copper (b) graphite (c) plastic (d) iron
15. 15.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
16. 16.Which of these needs a transparent material? (a) a skipping rope (b) a window pane (c) a cooking pot handle (d) a yoga mat
17. 17.🦺 What protects your eyes when sawing or drilling? (a) a cap (b) nothing (c) sunglasses (d) safety goggles
18. 18.True or false: an electrical engineer designs school networks. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a banyan tree (b) a waterfall (c) a railway track (d) a mountain
20. 20.🦺 In the workshop, is it safe to put tools back after use? (a) not safe (b) safe
21. 21.Which of these is a wedge? (a) a jar lid (b) a knife edge (c) a round doorknob (d) a crowbar
22. 22.🏋️ A force of 360 N pushes a cart 2 m along the floor. How much work is done, in joules?
23. 23.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
24. 24.🪝 A well winch has a handle (wheel) of radius 12 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
25. 25.⚙️ How many simple machines are there in the usual list? (a) 6 (b) 12 (c) 10 (d) 3
26. 26.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 13 cm long in the drawing. How long is the real car, in centimetres?
27. 27.🔺 Which shape keeps its shape best when its corners are pinned? (a) rectangle (b) hexagon (c) triangle (d) square
28. 28.🤝 A teammate’s idea seems odd. What should you do first? (a) ignore it (b) listen and ask why (c) walk away (d) laugh at it
29. 29.Which of these is a wedge? (a) a flagpole rope wheel (b) a nut and bolt (c) a truck loading ramp (d) an axe blade
30. 30.Which of these is a lever? (a) a truck loading ramp (b) a bottle opener (c) a well winch handle (d) a flagpole rope wheel
31. 31.Which of these happens in the Ask step? (a) list the materials (b) redesign after testing (c) define the problem (d) make it better, retest
32. 32.⚖️ A lever bar balances. The load is 160 N at ? cm from the fulcrum. The effort is 20 N at 80 cm from the fulcrum on the other side. What is the missing distance in centimetres?
33. 33.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
34. 34.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) more effort (d) no effort
35. 35.🤝 Why do engineers work in teams? (a) to finish nothing (b) to argue more (c) to work alone (d) many skills and ideas
36. 36.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) only on Mondays (d) yes, by half
37. 37.🏚️ Three solid model towers are made of the same material. Tower A is 150 cm tall on a 30 cm wide base, tower B is 240 cm tall on a 40 cm base and tower C is 120 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
38. 38.📋 A constraint is … (a) a final test (b) a kind of glue (c) a limit you must keep to (d) a goal for success
39. 39.🏋️ A force of 330 N pushes a cart 5 m along the floor. How much work is done, in joules?
40. 40.True or false: to skip writing results is good testing. (a) False (b) True

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