Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 442 · 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.🧪 A paper bridge was tested three times. It held 210 g, 100 g and 140 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) sketch three ideas
5. 5.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 330 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the weakest? (a) design B (b) design C (c) design A
8. 8.True or false: to hide a failed test is poor testing. (a) False (b) True
9. 9.🧪 A paper bridge was tested three times. It held 220 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
11. 11.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
12. 12.🔢 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) strengthen the weak part
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design A (b) design B (c) design C
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) test it only once (d) change only one thing
15. 15.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
16. 16.True or false: to measure the same way is poor testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
19. 19.True or false: to skip writing results is good testing. (a) True (b) False
20. 20.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to hide a failed test is good testing. (a) True (b) False
23. 23.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
24. 24.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
25. 25.True or false: to guess, do not measure is poor testing. (a) True (b) False
26. 26.True or false: to change only one thing is poor testing. (a) True (b) False
27. 27.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
29. 29.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) skip writing results (d) record every result
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design C (b) design A (c) design B
32. 32.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
33. 33.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
34. 34.True or false: to skip writing results is poor testing. (a) False (b) True
35. 35.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design B (b) design A (c) design C
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) measure the same way (d) guess, do not measure

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