Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 183 · 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.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they are cheap (d) they bend, not break
2. 2.⚖️ Which class of lever is a bottle opener? (a) class 2 (b) class 1 (c) class 3
3. 3.🤝 Is it good or poor teamwork to laugh at ideas? (a) good teamwork (b) poor teamwork
4. 4.True or false: the tip of a nail is a wheel and axle. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.True or false: to build the model is the Imagine step. (a) True (b) False
7. 7.🪢 A concrete slab weighing 22400 N rests evenly on 8 identical pillars. What compression force does each pillar carry, in newtons?
8. 8.💪 Two children push a box to the right, one with 80 N and the other with 35 N. What is the net (total) force on the box, in newtons?
9. 9.⚙️ Which simple machine is a nut and bolt? (a) lever (b) wheel and axle (c) pulley (d) screw
10. 10.⚙️ A wedge is … (a) two ramps back to back (b) a rope on a wheel (c) a bar on a pivot (d) a wheel on a rod
11. 11.🔍 Which is the odd one out? (a) using a light roof (b) adding cross bracing (c) raising heavy tanks high (d) fitting rubber base pads
12. 12.🤝 How do engineers share a design with others? (a) clear labelled sketches (b) no drawings at all (c) only talking fast (d) secret notes
13. 13.📋 For a model bridge challenge, is “use at most 20 straws” a constraint or a criterion? (a) a criterion (b) a constraint
14. 14.🔍 Which is the odd one out? (a) aluminium (b) brass (c) dry wood (d) iron
15. 15.⚖️ A lever balances when … (a) turning effects match (b) the bar is short (c) the fulcrum moves (d) both weights are equal
16. 16.🤝 A team plans for 25 minutes, builds for 50 minutes and then tests for 5 minutes, one after another. How many minutes is that in all?
17. 17.🤝 A team of 2 shares 10 equal jobs fairly. Each job takes 8 minutes. How many minutes does each person work?
18. 18.🏋️ A 9 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
20. 20.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 20 cm wide base, tower B is 240 cm tall on a 30 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
21. 21.Which of these is caused by muscular force? (a) an apple falls down (b) brakes stop a bicycle (c) pedalling a cycle (d) rain falls to the ground
22. 22.🛠️ Is a dam made by engineers or found in nature? (a) found in nature (b) made by engineers
23. 23.⚖️ In a class 1 lever, what is in the middle? (a) the fulcrum (b) nothing (c) the effort (d) the load
24. 24.Which of these uses triangles? (a) a round palace roof (b) an old stone bridge (c) a slab over a canal (d) a truss bridge side
25. 25.🤝 A team plans for 15 minutes, builds for 35 minutes and then tests for 10 minutes, one after another. How many minutes is that in all?
26. 26.What does the recorder do? (a) checks the goals are met (b) cuts and joins parts (c) keeps the design notes (d) puts the model together
27. 27.⚖️ A seesaw balances. Ravi (300 N) sits 2 m from the pivot on one side; Meena (200 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
28. 28.🪝 A winch has a wheel of radius 6 cm and an axle of radius 2 cm. What effort on the wheel lifts a 540 N bucket on the axle, in newtons? (ideal)
29. 29.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 30 cm and the load at 60 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
30. 30.🔺 Which strong shape does a bicycle frame use? (a) arch (b) triangle (c) beam (d) dome
31. 31.🪝 A winch has a wheel of radius 14 cm and an axle of radius 2 cm. What effort on the wheel lifts a 210 N bucket on the axle, in newtons? (ideal)
32. 32.🛞 More or less friction: a box pushed on carpet? (a) less friction (b) more friction
33. 33.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 2 cm long in the drawing. How long is the real car, in centimetres?
34. 34.🪝 More rope sections holding a load means … (a) more effort needed (b) less effort needed (c) no change (d) the load floats
35. 35.True or false: “a rope bridge in hills” is a suspension bridge. (a) True (b) False
36. 36.📋 Constraint: the tower must be no taller than 40 cm. The team’s tower is 40 cm tall. Is it within the constraint? (a) Yes (b) No
37. 37.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 40 cm wide base, tower B is 40 cm tall on a 20 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
38. 38.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) on the very top (c) hanging outside (d) on a thin pole
39. 39.🏋️ A machine lifts a load of 60 N when you push with 30 N. What is its mechanical advantage (MA)?
40. 40.🔧 Which tool would you use to tighten a nut? (a) a hammer (b) a protractor (c) a tape measure (d) a spanner

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids