Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 698 · 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 do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design A (b) design B (c) design C
3. 3.True or false: to skip writing results is poor testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
8. 8.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 190 g. What is the mean (average) load it held, in grams?
9. 9.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
10. 10.True or false: to change only one thing is poor testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
12. 12.True or false: to change only one thing is good testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
14. 14.🧪 A paper bridge was tested three times. It held 170 g, 80 g and 230 g. What is the mean (average) load it held, in grams?
15. 15.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 190 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
18. 18.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
19. 19.True or false: to use a new load each time is good testing. (a) False (b) True
20. 20.True or false: to use the same load is good testing. (a) False (b) True
21. 21.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
22. 22.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
23. 23.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
25. 25.True or false: to test it only once is good testing. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) guess, do not measure (d) test it only once
27. 27.True or false: to hide a failed test is good testing. (a) True (b) False
28. 28.True or false: to hide a failed test is poor testing. (a) True (b) False
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
30. 30.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design A (b) design C (c) design B
32. 32.True or false: to record every result is good testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 390 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
36. 36.🧪 A paper bridge was tested three times. It held 180 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) skip writing results (d) change only one thing
38. 38.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 250 g. What is the mean (average) load it held, in grams?

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