Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 789 · 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 210 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
3. 3.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
4. 4.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
5. 5.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
6. 6.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
7. 7.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) guess, do not measure (d) hide a failed test
9. 9.True or false: to use a new load each time is poor testing. (a) True (b) False
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
11. 11.🧪 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 weakest? (a) design A (b) design B (c) design C
12. 12.True or false: to record every result is good testing. (a) True (b) False
13. 13.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
14. 14.True or false: to guess, do not measure is poor testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change lots at once (d) change only one thing
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) load it with coins
18. 18.True or false: to hide a failed test is poor testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
20. 20.True or false: to change only one thing is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 210 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) test it only once
24. 24.True or false: to guess, do not measure is good testing. (a) True (b) False
25. 25.True or false: to use the same load is poor testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 280 g, 140 g and 300 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) repeat each test (d) hide a failed test
30. 30.🧪 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 strongest? (a) design B (b) design C (c) design A
31. 31.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 190 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
34. 34.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) build it with straws
36. 36.True or false: to measure the same way is poor testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to use a new load each time is good testing. (a) False (b) True
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) choose and draw one
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part

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