Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 238 · 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 BEST order to think about waste? (a) burn, bury, forget (b) recycle, reuse, reduce (c) reduce, reuse, recycle (d) reuse, recycle, reduce
2. 2.🦺 What protects your eyes when sawing or drilling? (a) safety goggles (b) a cap (c) nothing (d) sunglasses
3. 3.True or false: to own up to a mistake is poor teamwork. (a) True (b) False
4. 4.Which of these is made by engineers? (a) a rainbow (b) a mountain (c) a satellite (d) a volcano
5. 5.🛞 How can we reduce friction in a machine? (a) oil the moving parts (b) add sand (c) make parts rough (d) press parts harder
6. 6.True or false: a fixed pulley only changes direction. (a) False (b) True
7. 7.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 2 N, a wooden plank 5 N, a carpet 8 N, sandpaper 9 N. How many newtons more were needed on sandpaper than on ice?
8. 8.🔍 Which is the odd one out? (a) stacking loose bricks (b) using flexible joints (c) leaving out steel bars (d) raising heavy tanks high
9. 9.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 12 N, ice 4 N, a glass sheet 6 N, a carpet 8 N. Which surface gave the most friction? (a) sandpaper (b) ice (c) a carpet (d) a glass sheet
10. 10.True or false: to measure the same way is good testing. (a) True (b) False
11. 11.🔺 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?
12. 12.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a criterion (b) a constraint
13. 13.True or false: to measure its performance is the Test step. (a) False (b) True
14. 14.🌉 A beam bridge 280 m long is split by piers into 8 equal spans. How long is each span, in metres?
15. 15.True or false: to change lots at once is good testing. (a) False (b) True
16. 16.🛠️ What does an engineer mainly do? (a) grows crops (b) designs useful solutions (c) only paints pictures (d) sells tickets
17. 17.🛠️ Is a bridge made by engineers or found in nature? (a) found in nature (b) made by engineers
18. 18.🔍 Which is the odd one out? (a) iron (b) aluminium (c) cotton cloth (d) brass
19. 19.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
20. 20.🏋️ Pushing a crate 6 m took 2640 J of work. What force was used, in newtons?
21. 21.🔍 Which is the odd one out? (a) a round doorknob (b) a steering wheel (c) a wood screw (d) a well winch handle
22. 22.🔄 Which design-process step is it to make it better, retest? (a) Improve (b) Test (c) Plan (d) Ask
23. 23.🧱 Which material is best for a cooking pot handle? (a) iron (b) aluminium (c) copper (d) wood or plastic
24. 24.True or false: to ignore the team plan is poor teamwork. (a) False (b) True
25. 25.🛠️ Which of these is a problem an engineer could solve? (a) a road that floods (b) a lost cricket match (c) a boring story (d) a sad song
26. 26.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
27. 27.♻️ Reduce, reuse or recycle: melt cans into new cans? (a) reuse (b) reduce (c) recycle
28. 28.Which of these is in compression (pushed)? (a) a swing chain (b) a temple column (c) a suspension cable (d) a stretched rubber band
29. 29.💪 In a tug of war, one team pulls left with 95 N and the other pulls right with 75 N. What is the size of the net force, in newtons?
30. 30.Which of these uses an arch? (a) a round palace roof (b) a slab over a canal (c) an igloo (d) an old stone bridge
31. 31.🪝 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
32. 32.🤝 Why do engineers work in teams? (a) to argue more (b) to work alone (c) to finish nothing (d) many skills and ideas
33. 33.True or false: a seesaw is a class 3 lever (effort in the middle). (a) True (b) False
34. 34.⚖️ A seesaw balances. Arjun (760 N) sits 1 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?
35. 35.True or false: a broom when sweeping is a class 2 lever (load in the middle). (a) False (b) True
36. 36.Which need does a lift meet? (a) see very tiny things (b) talk to someone far away (c) go through a mountain (d) reach a top floor fast
37. 37.True or false: a wheel on ball bearings gives more friction. (a) False (b) True
38. 38.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.♻️ A family used to throw away 3 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 5 weeks?
40. 40.Which of these is reduce (use less)? (a) plant in old tyres (b) use a jar as a pen stand (c) turn plastic into tiles (d) carry a cloth bag

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