Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 915 · 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 240 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
3. 3.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 250 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) use the same load (d) test it only once
5. 5.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) repeat each test (d) change only one thing
10. 10.🧪 A paper bridge was tested three times. It held 380 g, 210 g and 280 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to record every result is good testing. (a) True (b) False
12. 12.True or false: to change only one thing is poor testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) read the challenge rules
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) hide a failed test (d) change lots at once
15. 15.True or false: to guess, do not measure is good testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) use a new load each time (d) measure the same way
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
18. 18.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
19. 19.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) record every result (d) skip writing results
20. 20.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
24. 24.True or false: to repeat each test is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) use a new load each time
29. 29.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
30. 30.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
32. 32.True or false: to change lots at once is poor testing. (a) False (b) True
33. 33.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
37. 37.True or false: to hide a failed test is good testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
39. 39.🧪 A paper bridge was tested three times. It held 370 g, 340 g and 310 g. What is the mean (average) load it held, in grams?
40. 40.🔢 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

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