Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 640 · 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 290 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 340 g. What is the mean (average) load it held, in grams?
4. 4.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 170 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to use the same load is good testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design C (b) design B (c) design A
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) test it only once (d) hide a failed test
9. 9.True or false: to record every result is poor testing. (a) False (b) True
10. 10.🧪 A paper bridge was tested three times. It held 190 g, 130 g and 190 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) hide a failed test (d) skip writing results
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
15. 15.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
16. 16.True or false: to change only one thing is good testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
18. 18.True or false: to skip writing results is poor testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 200 g, 180 g and 190 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 410 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) test it only once
22. 22.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) hide a failed test (d) change only one thing
24. 24.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
25. 25.True or false: to change lots at once is poor testing. (a) True (b) False
26. 26.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) choose and draw one
28. 28.True or false: to hide a failed test is good testing. (a) False (b) True
29. 29.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design C (b) design B (c) design A
31. 31.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
32. 32.🔢 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
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
34. 34.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design C (b) design A (c) design B
36. 36.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
37. 37.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
38. 38.🧪 A paper bridge was tested three times. It held 200 g, 80 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
40. 40.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use a new load each time (d) measure the same way

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