Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 54 · 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.True or false: to hide a failed test is poor testing. (a) False (b) True
2. 2.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
4. 4.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 150 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design B (b) design C (c) design A
7. 7.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
8. 8.🧪 A paper bridge was tested three times. It held 310 g, 170 g and 210 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) 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) change only one thing (b) record every result (c) use the same load (d) change lots at once
13. 13.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
14. 14.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
15. 15.True or false: to change only one thing is poor testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🧪 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?
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) repeat each test (d) record every result
19. 19.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) guess, do not measure
21. 21.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) guess, do not measure (d) change lots at once
22. 22.🧪 A paper bridge was tested three times. It held 160 g, 70 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to record every result is good testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 170 g, 70 g and 270 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) hide a failed test (d) change only one thing
26. 26.True or false: to repeat each test is poor testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
28. 28.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) test it only once
29. 29.🧪 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 weakest? (a) design B (b) design C (c) design A
30. 30.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
31. 31.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
32. 32.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.True or false: to use the same load is good testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
39. 39.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one

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