Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 322 · 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) measure the same way (b) use a new load each time (c) repeat each test (d) change only one thing
2. 2.True or false: biogas from waste is a non-renewable energy source. (a) True (b) False
3. 3.💪 Two children push a box to the right, one with 100 N and the other with 90 N. What is the net (total) force on the box, in newtons?
4. 4.🔺 Which shape keeps its shape best when its corners are pinned? (a) square (b) hexagon (c) triangle (d) rectangle
5. 5.🦺 How should you carry scissors? (a) points down, closed (b) points up, open (c) by the blades (d) while running
6. 6.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 8 N, ice 1 N, a glass sheet 2 N, a wooden plank 6 N. Which surface gave the most friction? (a) a wooden plank (b) a glass sheet (c) sandpaper (d) ice
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) test it only once (d) repeat each test
8. 8.🪝 A wheel and axle is a big wheel fixed to … (a) a sharp wedge (b) a smaller rod (axle) (c) a loose rope (d) a flat ramp
9. 9.🔍 Which is the odd one out? (a) a window blind cord (b) a well-bucket rope wheel (c) a bottle cap (d) a flagpole rope wheel
10. 10.📐 On a plan, 1 cm stands for 10 m. A wall is 20 cm long on the plan. How long is the real wall, in metres?
11. 11.🛞 More or less friction: a smooth steel slide? (a) more friction (b) less friction
12. 12.Which of these happens in the Create step? (a) make a prototype (b) find the limits (c) try it out (d) redesign after testing
13. 13.🔺 Which strong shape does a bicycle frame use? (a) dome (b) triangle (c) arch (d) beam
14. 14.📐 How many centimetres are in 1 metre? (a) 10 (b) 100 (c) 60 (d) 1000
15. 15.True or false: a fishing rod is a class 1 lever (fulcrum in the middle). (a) True (b) False
16. 16.📐 A beam is 890 cm long. How long is it in metres? =
17. 17.Which of these happens in the Imagine step? (a) brainstorm many ideas (b) define the problem (c) draw a labelled diagram (d) try it out
18. 18.True or false: a knife edge is a wheel and axle. (a) True (b) False
19. 19.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
20. 20.🌉 A beam bridge is 90 m long. Piers split it into equal spans of 45 m. How many spans are there?
21. 21.Which of these makes a building safer in earthquakes? (a) having a wide base (b) making brittle joints (c) raising heavy tanks high (d) leaving out steel bars
22. 22.🪝 What does a single fixed pulley change? (a) gravity (b) the direction of pull (c) the size of the load (d) the colour of rope
23. 23.True or false: an electrical engineer plans a power grid. (a) False (b) True
24. 24.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
25. 25.🧑‍🔧 Which kind of engineer lays out a highway? (a) electrical (b) chemical (c) mechanical (d) civil
26. 26.⚖️ A seesaw balances. Ravi (? N) sits 4 m from the pivot on one side; Kabir (600 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
27. 27.🔍 Which is the odd one out? (a) wear safety goggles (b) tie back long hair (c) carry scissors closed (d) cut towards your hand
28. 28.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 54 cm tall. Is it within the constraint? (a) No (b) Yes
29. 29.True or false: wind is a renewable energy source. (a) True (b) False
30. 30.Which of these happens in the Improve step? (a) fix the weak part (b) build the model (c) measure its performance (d) list the materials
31. 31.💪 In which unit do we measure force? (a) litre (L) (b) metre (m) (c) newton (N) (d) second (s)
32. 32.📐 On a plan, 1 cm stands for 10 m. A real bridge is 170 m long. How long is it on the plan, in centimetres?
33. 33.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using flexible joints (c) having a wide base (d) raising heavy tanks high
34. 34.💪 Which force pulls everything towards the Earth? (a) magnetism (b) gravity (c) wind (d) friction
35. 35.True or false: a movable pulley hangs on the rope loop. (a) False (b) True
36. 36.Which of these is in tension (pulled)? (a) a temple column (b) a table leg (c) a hanging lamp chain (d) a tall bridge tower
37. 37.🪝 Fixed or movable pulley: which one rises with the load? (a) a movable pulley (b) a fixed pulley
38. 38.🔺 One side of a straw bridge is a row of 12 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
39. 39.🪢 Tension or compression: a suspension cable? (a) compression (b) tension
40. 40.Which of these needs a transparent material? (a) a car seat belt (b) a window pane (c) a water tank (d) an oven glove

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