Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 928 · 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 180 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
2. 2.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) measure the same way (d) hide a failed test
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
5. 5.True or false: to change lots at once is good testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
7. 7.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
8. 8.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
9. 9.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
10. 10.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
11. 11.True or false: to record every result is poor testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) record every result (d) change only one thing
13. 13.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 270 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to guess, do not measure is good testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
19. 19.True or false: to hide a failed test is poor testing. (a) False (b) True
20. 20.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
22. 22.True or false: to test it only once is poor testing. (a) True (b) False
23. 23.True or false: to guess, do not measure is poor testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
25. 25.🧪 A paper bridge was tested three times. It held 150 g, 60 g and 240 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to use the same load is poor testing. (a) False (b) True
27. 27.True or false: to skip writing results is poor testing. (a) True (b) False
28. 28.True or false: to repeat each test is poor testing. (a) False (b) True
29. 29.True or false: to hide a failed test is good testing. (a) False (b) True
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🧪 A paper bridge was tested three times. It held 330 g, 170 g and 280 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) guess, do not measure (d) test it only once
33. 33.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
35. 35.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
36. 36.True or false: to test it only once is good testing. (a) False (b) True
37. 37.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
38. 38.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) use a new load each time
39. 39.🧪 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?
40. 40.🧪 A paper bridge was tested three times. It held 430 g, 270 g and 320 g. What is the mean (average) load it held, in grams?

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