Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 907 · 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 340 g, 160 g and 280 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to skip writing results is poor testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
5. 5.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) choose and draw one
6. 6.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to test it only once is good testing. (a) False (b) True
8. 8.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
9. 9.True or false: to skip writing results is good testing. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) record every result (d) hide a failed test
11. 11.🧪 A paper bridge was tested three times. It held 370 g, 200 g and 270 g. What is the mean (average) load it held, in grams?
12. 12.True or false: to test it only once is poor testing. (a) True (b) False
13. 13.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 120 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to use the same load is poor testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) record every result (d) use the same load
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) change only one thing (d) measure the same way
17. 17.True or false: to record every result is poor testing. (a) True (b) False
18. 18.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
19. 19.True or false: to repeat each test is good testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
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) skip writing results (b) change lots at once (c) guess, do not measure (d) measure the same way
23. 23.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
24. 24.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
25. 25.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) record every result (d) use the same load
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) record every result (d) skip writing results
30. 30.True or false: to change only one thing is poor testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) use the same load (d) change lots at once
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
36. 36.True or false: to use a new load each time is good testing. (a) True (b) False
37. 37.True or false: to measure the same way is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 180 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 180 g. What is the mean (average) load it held, in grams?

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