Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 230 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the weakest? (a) design B (b) design A (c) design C
3. 3.🧪 A paper bridge was tested three times. It held 210 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
4. 4.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
5. 5.True or false: to use the same load is poor testing. (a) False (b) True
6. 6.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
7. 7.🧪 A paper bridge was tested three times. It held 390 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
8. 8.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
9. 9.True or false: to guess, do not measure is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the strongest? (a) design A (b) design B (c) design C
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.🧪 A paper bridge was tested three times. It held 320 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
16. 16.🧪 A paper bridge was tested three times. It held 190 g, 70 g and 220 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 230 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
19. 19.True or false: to change only one thing is good testing. (a) False (b) True
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design B (b) design C (c) design A
21. 21.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use the same load (d) test it only once
23. 23.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
24. 24.True or false: to use a new load each time is poor testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 160 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) hide a failed test (d) test it only once
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) record every result
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to skip writing results is good testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
31. 31.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🧪 A paper bridge was tested three times. It held 340 g, 320 g and 360 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
38. 38.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 310 g, 300 g and 290 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) build it with straws

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