Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 892 · 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 repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
2. 2.True or false: to guess, do not measure is good testing. (a) True (b) False
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design C (b) design B (c) design A
4. 4.True or false: to measure the same way is poor testing. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) measure the same way (d) repeat each test
6. 6.True or false: to change only one thing is poor testing. (a) False (b) True
7. 7.True or false: to use a new load each time is poor testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 280 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to hide a failed test is poor testing. (a) True (b) False
10. 10.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) hide a failed test (d) repeat each test
13. 13.True or false: to test it only once is poor testing. (a) False (b) True
14. 14.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
15. 15.🧪 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 weakest? (a) design B (b) design A (c) design C
16. 16.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 370 g, 300 g and 230 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) strengthen the weak part
19. 19.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
20. 20.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) skip writing results (d) hide a failed test
21. 21.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) change only one thing (d) repeat each test
23. 23.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
25. 25.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) record every result (d) measure the same way
26. 26.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) choose and draw one
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design C (b) design B (c) design A
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.🧪 A paper bridge was tested three times. It held 440 g, 280 g and 330 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.True or false: to change lots at once is good testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
37. 37.True or false: to test it only once is good testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
40. 40.True or false: to repeat each test is poor testing. (a) False (b) True

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