Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 146 · 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.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
2. 2.True or false: to change only one thing is good testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
5. 5.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
6. 6.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) guess, do not measure (d) hide a failed test
7. 7.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the weakest? (a) design B (b) design A (c) design C
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design B (b) design A (c) design C
10. 10.True or false: to use the same load is poor testing. (a) True (b) False
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
12. 12.True or false: to use a new load each time is poor testing. (a) True (b) False
13. 13.True or false: to measure the same way is poor testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 240 g, 240 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.True or false: to change lots at once is good testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) record every result (d) measure the same way
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
20. 20.True or false: to hide a failed test is good testing. (a) True (b) False
21. 21.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
22. 22.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 160 g, 50 g and 240 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 400 g, 330 g and 290 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) guess, do not measure
28. 28.🧪 A paper bridge was tested three times. It held 300 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change only one thing (d) change lots at once
30. 30.True or false: to skip writing results is good testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
32. 32.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use the same load (d) skip writing results
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) hide a failed test (d) use the same load
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.True or false: to repeat each test 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) sketch three ideas (b) build it with straws (c) load it with coins (d) strengthen the weak part

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