Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 945 · 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.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
2. 2.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) guess, do not measure (d) change lots at once
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
5. 5.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) record every result (d) change lots at once
6. 6.True or false: to change lots at once is poor testing. (a) True (b) False
7. 7.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
8. 8.True or false: to hide a failed test is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.True or false: to change lots at once is good testing. (a) True (b) False
11. 11.True or false: to repeat each test is good testing. (a) False (b) True
12. 12.True or false: to measure the same way is poor testing. (a) True (b) False
13. 13.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
14. 14.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 110 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
20. 20.True or false: to record every result is poor testing. (a) False (b) True
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
22. 22.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
23. 23.True or false: to use the same load is good testing. (a) False (b) True
24. 24.True or false: to change only one thing is good testing. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change lots at once (d) measure the same way
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) test it only once (d) hide a failed test
27. 27.True or false: to skip writing results is good testing. (a) False (b) True
28. 28.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
29. 29.🔢 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
30. 30.True or false: to test it only once is poor testing. (a) True (b) False
31. 31.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
33. 33.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) record every result (d) change lots at once
34. 34.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 310 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design C (b) design B (c) design A
36. 36.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
38. 38.🧪 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 weakest? (a) design B (b) design C (c) design A
39. 39.True or false: to use the same load is poor testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) load it with coins

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