Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 749 · 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 400 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
2. 2.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
3. 3.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
4. 4.🔢 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
5. 5.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
6. 6.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 120 g. What is the mean (average) load it held, in grams?
7. 7.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
8. 8.True or false: to test it only once is poor testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) guess, do not measure (d) repeat each test
10. 10.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
11. 11.🔍 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
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) load it with coins
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
15. 15.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) guess, do not measure (d) use the same load
16. 16.True or false: to measure the same way is poor testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use a new load each time (d) repeat each test
19. 19.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
20. 20.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
21. 21.🧪 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 C (b) design B (c) design A
22. 22.🔢 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
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design A (c) design C
24. 24.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 150 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 440 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) change only one thing (d) record every result
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 250 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 280 g, 270 g and 260 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.True or false: to record every result is poor testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 220 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to use a new load each time is poor testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) change only one thing (d) use the same load
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
39. 39.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 190 g, 170 g and 210 g. What is the mean (average) load it held, in grams?

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