Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 833 · 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.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
2. 2.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to repeat each test is good testing. (a) True (b) False
4. 4.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 100 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to hide a failed test is poor testing. (a) True (b) False
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 160 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) guess, do not measure (d) test it only once
9. 9.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
12. 12.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
14. 14.True or false: to repeat each test is poor testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 290 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) record every result (d) measure the same way
17. 17.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
18. 18.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
19. 19.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
21. 21.🧪 A paper bridge was tested three times. It held 310 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
23. 23.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
24. 24.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 390 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) skip writing results
26. 26.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
27. 27.True or false: to change only one thing is good testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) measure the same way (d) change only one thing
29. 29.True or false: to guess, do not measure is good testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change lots at once (d) change only one thing
32. 32.True or false: to use a new load each time is good testing. (a) True (b) False
33. 33.True or false: to use a new load each time is poor testing. (a) False (b) True
34. 34.🔢 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
35. 35.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
36. 36.True or false: to test it only once is poor testing. (a) False (b) True
37. 37.True or false: to change lots at once is good testing. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) change lots at once (d) use a new load each time
39. 39.🧪 A paper bridge was tested three times. It held 380 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 160 g, 90 g and 230 g. What is the mean (average) load it held, in grams?

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