Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 474 · 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 lever balances when … (a) turning effects match (b) the fulcrum moves (c) the bar is short (d) both weights are equal
2. 2.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 200 N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
3. 3.💪 A cart is pulled to the right with 85 N and to the left with 85 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
4. 4.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 9 N, ice 2 N, a glass sheet 3 N, a wooden plank 5 N. Which surface gave the least friction? (a) a wooden plank (b) a glass sheet (c) ice (d) sandpaper
5. 5.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
6. 6.⚙️ A wedge is … (a) a wheel on a rod (b) a bar on a pivot (c) two ramps back to back (d) a rope on a wheel
7. 7.🤝 Is it good or poor teamwork to blame others for faults? (a) good teamwork (b) poor teamwork
8. 8.Which job does a computer engineer do? (a) designs car engines (b) plans a dam (c) designs power lines (d) builds a website
9. 9.Which of these needs a transparent material? (a) a window pane (b) an oven glove (c) a switch contact (d) a cooking pot handle
10. 10.🔍 Which is the odd one out? (a) a coral reef (b) a waterfall (c) a dam (d) a seashell
11. 11.True or false: ocean wave energy is a non-renewable energy source. (a) True (b) False
12. 12.🏋️ Pushing a crate 1 m took 370 J of work. What force was used, in newtons?
13. 13.🔺 A flat frame has 9 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.📐 On a plan, 1 cm stands for 20 m. A real bridge is 240 m long. How long is it on the plan, in centimetres?
15. 15.♻️ A school bench is made from 200 recycled plastic bottles. How many benches can be made from 2000 bottles?
16. 16.📋 Constraint: the tower must be no taller than 90 cm. The team’s tower is 84 cm tall. Is it within the constraint? (a) Yes (b) No
17. 17.True or false: a movable pulley needs effort = load. (a) True (b) False
18. 18.📐 On a plan, 1 cm stands for 2 m. A real bridge is 32 m long. How long is it on the plan, in centimetres?
19. 19.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) civil (b) biomedical (c) aerospace (d) electrical
20. 20.📐 A beam is 870 cm long. How long is it in metres? =
21. 21.🔍 Which is the odd one out? (a) use only paper and tape (b) be under 30 cm tall (c) use at most 20 straws (d) keep ice for 1 hour
22. 22.Which of these is caused by friction? (a) lifting a school bag (b) rain falls to the ground (c) shoes grip the floor (d) pedalling a cycle
23. 23.🪢 Tension or compression: a suspension cable? (a) compression (b) tension
24. 24.🪝 A well winch has a handle (wheel) of radius 14 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
25. 25.True or false: “finish in 40 minutes” is a criterion (a goal). (a) False (b) True
26. 26.🛠️ People need to go through a mountain. Which invention helps? (a) a tunnel (b) a dam (c) a fridge (d) a solar panel
27. 27.🛞 Friction acts … (a) only on ice (b) with the motion (c) against the motion (d) only upwards
28. 28.⚙️ A screw is really … (a) a bent lever (b) a tiny pulley (c) a kind of wheel (d) a ramp wrapped round
29. 29.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
30. 30.True or false: a railway track is found in nature. (a) True (b) False
31. 31.True or false: a claw hammer on a nail is a wedge. (a) True (b) False
32. 32.🤝 How do engineers share a design with others? (a) only talking fast (b) clear labelled sketches (c) no drawings at all (d) secret notes
33. 33.🔍 Which is the odd one out? (a) a seesaw (b) a nutcracker (c) a water tap handle (d) a crowbar
34. 34.🛞 How can we reduce friction in a machine? (a) press parts harder (b) oil the moving parts (c) make parts rough (d) add sand
35. 35.🏚️ Why is a wide base safer? (a) it is colourful (b) it is taller (c) it is harder to tip over (d) it is lighter
36. 36.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
37. 37.🔢 To follow the engineering design process, which comes first: “Ask” or “Plan”? (a) Plan (b) Ask
38. 38.Which of these is a screw? (a) a playground slide (b) a bottle opener (c) a nut and bolt (d) a round doorknob
39. 39.Which of these needs a waterproof material? (a) a tea flask lining (b) a roof sheet (c) a window pane (d) a skipping rope
40. 40.True or false: “hold up 500 g” is a criterion (a goal). (a) True (b) False

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