Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 430 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
2. 2.🧪 A paper bridge was tested three times. It held 410 g, 300 g and 250 g. What is the mean (average) load it held, in grams?
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) use the same load (d) change only one thing
5. 5.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) change lots at once (d) use the same load
7. 7.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
8. 8.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
12. 12.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
13. 13.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
14. 14.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
15. 15.True or false: to use a new load each time is good testing. (a) False (b) True
16. 16.True or false: to test it only once is poor testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
18. 18.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
19. 19.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
20. 20.True or false: to use a new load each time is poor testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
22. 22.True or false: to measure the same way is poor testing. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) hide a failed test (d) test it only once
24. 24.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
26. 26.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
27. 27.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) guess, do not measure (d) repeat each test
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design B (b) design C (c) design A
33. 33.True or false: to use the same load is good testing. (a) False (b) True
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
35. 35.True or false: to measure the same way is good testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 220 g and 420 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing

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