Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 503 · 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 of these is caused by friction? (a) squeezing a lemon (b) a thrown ball comes down (c) brakes stop a bicycle (d) a river flows downhill
2. 2.⚖️ A lever bar balances. The load is 480 N at ? cm from the fulcrum. The effort is 320 N at 60 cm from the fulcrum on the other side. What is the missing distance in centimetres?
3. 3.💪 A cart is pulled to the right with 90 N and to the left with 90 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
4. 4.📋 Criterion: the model bridge must hold at least 900 g. In the test it held 900 g. Does it meet the criterion? (a) Yes (b) No
5. 5.Which of these is reuse (use again)? (a) melt cans into new cans (b) fix a dripping tap (c) refill a water bottle (d) carry a cloth bag
6. 6.🪝 A pulley system lifts an 80 N load with an effort of 40 N. What is its mechanical advantage (MA)?
7. 7.📋 Constraint: the tower must be no taller than 100 cm. The team’s tower is 94 cm tall. Is it within the constraint? (a) Yes (b) No
8. 8.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
9. 9.♻️ Is sunlight a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
10. 10.🪢 A stage stands on 3 identical legs and each leg is squeezed with 150 N. What is the total load on the stage, in newtons?
11. 11.♻️ Which is the BEST order to think about waste? (a) reuse, recycle, reduce (b) reduce, reuse, recycle (c) recycle, reuse, reduce (d) burn, bury, forget
12. 12.🦺 In the workshop, is it safe to play near a moving drill? (a) not safe (b) safe
13. 13.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) computer (b) chemical (c) aerospace (d) civil
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
15. 15.True or false: “cables tied down at ends” is a suspension bridge. (a) False (b) True
16. 16.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
17. 17.♻️ Reduce, reuse or recycle: switch off unused lights? (a) reuse (b) reduce (c) recycle
18. 18.⚖️ In a class 2 lever, what is in the middle? (a) the effort (b) the axle (c) the fulcrum (d) the load
19. 19.🌉 Which bridge type: “deck hangs from cables”? (a) suspension bridge (b) arch bridge (c) beam bridge
20. 20.🛠️ Is a banyan tree made by engineers or found in nature? (a) made by engineers (b) found in nature
21. 21.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) what is for lunch? (b) who won the match? (c) how can we build it? (d) why is the sky blue?
22. 22.True or false: “a curve under the deck” is an arch bridge. (a) True (b) False
23. 23.Which of these uses triangles? (a) an igloo (b) a roof truss (c) a curved stone doorway (d) a shelf on two brackets
24. 24.♻️ Reduce, reuse or recycle: refill a water bottle? (a) reuse (b) recycle (c) reduce
25. 25.Which need does a lift meet? (a) see very tiny things (b) reach a top floor fast (c) talk to someone far away (d) keep food fresh longer
26. 26.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
27. 27.🪝 A well winch has a handle (wheel) of radius 3 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
28. 28.♻️ Reduce, reuse or recycle: fix a dripping tap? (a) reuse (b) recycle (c) reduce
29. 29.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 2 cm long in the drawing. How long is the real car, in centimetres?
30. 30.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
31. 31.💪 A bag has a mass of 57 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
32. 32.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change only one thing (d) use the same load
33. 33.🔺 Which shape keeps its shape best when its corners are pinned? (a) triangle (b) square (c) rectangle (d) hexagon
34. 34.Which need does a solar panel meet? (a) make water safe to drink (b) cross a wide river (c) make power from sunlight (d) go through a mountain
35. 35.📐 On a plan, 1 cm stands for 10 m. A real bridge is 160 m long. How long is it on the plan, in centimetres?
36. 36.♻️ A sustainable design … (a) uses the most plastic (b) wastes water (c) lasts one day (d) protects the future
37. 37.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a fixed pulley (b) a movable pulley
38. 38.🔍 Which is the odd one out? (a) a seesaw (b) a jar lid (c) a bottle cap (d) a nut and bolt
39. 39.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
40. 40.True or false: to touch a hot glue tip is not safe. (a) False (b) True

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