Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 959 · 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.🛞 How can we reduce friction in a machine? (a) make parts rough (b) press parts harder (c) add sand (d) oil the moving parts
2. 2.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
3. 3.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) using flexible joints (c) adding steel to concrete (d) using a heavy roof
4. 4.🔍 Which is the odd one out? (a) a claw hammer on a nail (b) a crowbar (c) a nut and bolt (d) a seesaw
5. 5.Which of these needs a flexible material? (a) a window pane (b) a car seat belt (c) a water tank (d) a roof sheet
6. 6.🔄 In which step do engineers draw a labelled diagram? (a) Ask (b) Test (c) Plan (d) Improve
7. 7.⚖️ On a seesaw, a heavier child should sit … (a) on the pivot (b) farther from the pivot (c) anywhere (d) closer to the pivot
8. 8.True or false: to make a hole in wood, use a saw. (a) True (b) False
9. 9.🔄 Which design-process step is it to brainstorm many ideas? (a) Improve (b) Ask (c) Plan (d) Imagine
10. 10.True or false: a seashell is found in nature. (a) False (b) True
11. 11.Which of these is reuse (use again)? (a) use a jar as a pen stand (b) melt glass into new jars (c) fix a dripping tap (d) switch off unused lights
12. 12.⚖️ A seesaw balances. Asha (? N) sits 1 m from the pivot on one side; Meena (160 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
13. 13.🔍 Which is the odd one out? (a) an axe blade (b) a chisel (c) a round doorknob (d) the tip of a nail
14. 14.Which of these uses a dome? (a) a slab over a canal (b) a lintel over a door (c) a truss bridge side (d) an igloo
15. 15.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
16. 16.⚖️ Going along a lever from one end to the other, the order is: load, effort, fulcrum. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
17. 17.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
18. 18.📐 Why do engineers use scale drawings? (a) big things fit on paper (b) to make them pretty (c) to hide sizes (d) to save ink only
19. 19.🧑‍🔧 Which kind of engineer refines crude oil? (a) civil (b) mechanical (c) chemical (d) aerospace
20. 20.⚖️ A lever bar balances. The load is 100 N at 20 cm from the fulcrum. The effort is 100 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
21. 21.🪝 What does a single fixed pulley change? (a) the colour of rope (b) gravity (c) the direction of pull (d) the size of the load
22. 22.📋 A constraint is … (a) a limit you must keep to (b) a kind of glue (c) a goal for success (d) a final test
23. 23.Which of these makes a building safer in earthquakes? (a) using flexible joints (b) using a heavy roof (c) raising heavy tanks high (d) leaving out steel bars
24. 24.♻️ A family used to throw away 9 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 2 weeks?
25. 25.True or false: a civil engineer designs a metro tunnel. (a) True (b) False
26. 26.🧱 Which material is best for a window pane? (a) wood (b) steel (c) glass (d) brick
27. 27.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) True (b) False
28. 28.True or false: to turn a screw, use a screwdriver. (a) True (b) False
29. 29.📐 A beam is 750 cm long. How long is it in metres? =
30. 30.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
31. 31.⚖️ Going along a lever from one end to the other, the order is: fulcrum, effort, load. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
32. 32.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) paper (d) cardboard
33. 33.⚖️ Turning effect = force × … (a) mass of fulcrum (b) colour of bar (c) time taken (d) distance from fulcrum
34. 34.⚖️ A lever bar balances. The load is 210 N at 50 cm from the fulcrum. The effort is 150 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
35. 35.🔧 Which tool would you use to turn a screw? (a) a saw (b) a protractor (c) a screwdriver (d) a spirit level
36. 36.True or false: a fixed pulley is on a flagpole top. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a bottle opener (b) a claw hammer on a nail (c) a window blind cord (d) a crowbar
38. 38.Which need does a solar panel meet? (a) reach a top floor fast (b) cross a wide river (c) make power from sunlight (d) make water safe to drink
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) build it with straws
40. 40.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a constraint (b) a criterion

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