Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 419 · 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.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 15 cm long in the drawing. How long is the real car, in centimetres?
2. 2.🛠️ Engineers use maths and which other subject the most? (a) dance (b) cooking (c) science (d) music
3. 3.True or false: a civil engineer refines crude oil. (a) False (b) True
4. 4.🪝 A bucket weighing 420 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
5. 5.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
6. 6.True or false: a fort gateway uses triangles. (a) False (b) True
7. 7.🛞 How can we reduce friction in a machine? (a) add sand (b) press parts harder (c) oil the moving parts (d) make parts rough
8. 8.⚖️ A seesaw balances. Zoya (520 N) sits 2 m from the pivot on one side; Asha (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
9. 9.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) reuse (b) recycle (c) reduce
10. 10.🔢 To follow the engineering design process, which comes first: “Create” or “Plan”? (a) Plan (b) Create
11. 11.🏋️ A machine lifts a load of 330 N when you push with 110 N. What is its mechanical advantage (MA)?
12. 12.True or false: a pair of kitchen tongs is a class 3 lever (effort in the middle). (a) True (b) False
13. 13.♻️ Is petrol a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
14. 14.🛠️ Is a rainbow made by engineers or found in nature? (a) made by engineers (b) found in nature
15. 15.💪 A bag has a mass of 52 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
16. 16.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
17. 17.🪢 Tension or compression: a tall bridge tower? (a) tension (b) compression
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 30 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
19. 19.🔧 Which tool would you use to turn a screw? (a) a saw (b) a screwdriver (c) a tape measure (d) pliers
20. 20.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a constraint (b) a criterion
21. 21.📐 On a plan, 1 cm stands for 20 m. A wall is 9 cm long on the plan. How long is the real wall, in metres?
22. 22.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a criterion (b) a constraint
23. 23.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 2 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
24. 24.🌉 Which bridge type can cross the widest gap in one span? (a) beam bridge (b) log bridge (c) arch bridge (d) suspension bridge
25. 25.🛞 More or less friction: sand on a slippery path? (a) more friction (b) less friction
26. 26.True or false: a civil engineer lays out a highway. (a) False (b) True
27. 27.True or false: a flagpole rope wheel is a lever. (a) True (b) False
28. 28.🔢 To follow the engineering design process, which comes first: “Ask” or “Test”? (a) Ask (b) Test
29. 29.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a movable pulley (b) a fixed pulley
30. 30.🔍 Which is the odd one out? (a) a river (b) a bicycle (c) a volcano (d) a waterfall
31. 31.📋 For a model bridge challenge, is “float for 1 minute” a constraint or a criterion? (a) a criterion (b) a constraint
32. 32.🏋️ A 12 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
33. 33.True or false: a civil engineer designs electric motors. (a) True (b) False
34. 34.⚖️ Which class of lever is a broom when sweeping? (a) class 2 (b) class 3 (c) class 1
35. 35.True or false: a seashell is found in nature. (a) False (b) True
36. 36.True or false: “roll at least 2 metres” is a constraint (a limit). (a) True (b) False
37. 37.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) stacking loose bricks (c) adding cross bracing (d) using a heavy roof
38. 38.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 11 N, ice 3 N, a wooden plank 7 N, a carpet 10 N. How many newtons more were needed on sandpaper than on ice?
39. 39.True or false: a tunnel helps people go through a mountain. (a) False (b) True
40. 40.Which of these happens in the Imagine step? (a) follow the plan to build (b) draw a labelled diagram (c) think of wild ideas (d) make a prototype

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