Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 347 · 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.💪 Two children push a box to the right, one with 80 N and the other with 85 N. What is the net (total) force on the box, in newtons?
2. 2.True or false: “good for short gaps” is a suspension bridge. (a) True (b) False
3. 3.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Improve (b) Plan (c) Ask (d) Test
4. 4.🪝 What does a single fixed pulley change? (a) gravity (b) the colour of rope (c) the direction of pull (d) the size of the load
5. 5.⚖️ A lever balances when … (a) the fulcrum moves (b) the bar is short (c) both weights are equal (d) turning effects match
6. 6.📋 Your team’s budget is ₹59. You must buy one roll of tape for ₹20. Straws cost ₹5 each. What is the greatest number of straws you can buy?
7. 7.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a constraint (b) a criterion
8. 8.♻️ A sustainable design … (a) protects the future (b) lasts one day (c) wastes water (d) uses the most plastic
9. 9.📋 Constraint: the tower must be no taller than 30 cm. The team’s tower is 36 cm tall. Is it within the constraint? (a) Yes (b) No
10. 10.True or false: building tall and narrow makes a building safer in earthquakes. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) cut towards your hand (b) clamp wood before sawing (c) tie back long hair (d) put tools back after use
12. 12.True or false: to draw a labelled diagram is the Ask step. (a) False (b) True
13. 13.True or false: a computer engineer builds hospital scanners. (a) True (b) False
14. 14.⚖️ Going along a lever from one end to the other, the order is: load, effort, fulcrum. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
15. 15.🔍 Which is the odd one out? (a) wear safety goggles (b) carry scissors closed (c) put tools back after use (d) touch a hot glue tip
16. 16.🔍 Which is the odd one out? (a) an axe blade (b) a door stopper (c) a flagpole rope wheel (d) a chisel
17. 17.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
18. 18.🏋️ A 2 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🔧 Which tool would you use to smooth a rough edge? (a) pliers (b) a screwdriver (c) sandpaper (d) a protractor
20. 20.🤝 In a design team, who writes down results? (a) materials manager (b) builder (c) recorder (d) team leader
21. 21.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a wooden plank 5 N, a carpet 7 N, sandpaper 11 N. Which surface gave the least friction? (a) a carpet (b) sandpaper (c) a wooden plank (d) ice
22. 22.⚖️ A seesaw balances. Arjun (680 N) sits ? m from the pivot on one side; Asha (510 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
23. 23.🌉 A beam bridge 350 m long rests on the two river banks and on piers in between, making equal spans of 50 m. How many piers are there?
24. 24.True or false: an umbrella cover needs a transparent material. (a) False (b) True
25. 25.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
26. 26.🌉 What holds up a long beam bridge in the middle? (a) nothing (b) balloons (c) piers (d) cables only
27. 27.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using flexible joints (c) making brittle joints (d) using a heavy roof
28. 28.🛠️ Is a mobile phone made by engineers or found in nature? (a) made by engineers (b) found in nature
29. 29.🏚️ Three solid model towers are made of the same material. Tower A is 280 cm tall on a 40 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
30. 30.Which of these is found in nature? (a) a satellite (b) a railway track (c) a ceiling fan (d) a waterfall
31. 31.🔢 To follow the engineering design process, what comes right after “Test”? (a) Ask (b) Create (c) Imagine (d) Improve
32. 32.🔍 Which is the odd one out? (a) leave tools on the floor (b) use a cracked tool (c) run while holding tools (d) put tools back after use
33. 33.📐 How many centimetres are in 1 metre? (a) 10 (b) 100 (c) 60 (d) 1000
34. 34.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
35. 35.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a constraint (b) a criterion
36. 36.What does the tester do? (a) puts the model together (b) writes down results (c) checks the goals are met (d) tracks what is used up
37. 37.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) False (b) True
38. 38.⚙️ A wedge is … (a) a wheel on a rod (b) two ramps back to back (c) a rope on a wheel (d) a bar on a pivot
39. 39.💪 Two children push a box to the right, one with 15 N and the other with 65 N. What is the net (total) force on the box, in newtons?
40. 40.🛞 More or less friction: a tyre with deep treads? (a) less friction (b) more friction

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