Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 472 · 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.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
3. 3.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the strongest? (a) design B (b) design A (c) design C
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) measure the same way (d) record every result
6. 6.True or false: to measure the same way is poor testing. (a) True (b) False
7. 7.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
8. 8.True or false: to guess, do not measure is poor testing. (a) False (b) True
9. 9.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 270 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to test it only once is poor testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) change lots at once
12. 12.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
14. 14.True or false: to change only one thing is good testing. (a) False (b) True
15. 15.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
18. 18.True or false: to skip writing results is poor testing. (a) False (b) True
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) choose and draw one
20. 20.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) hide a failed test (d) test it only once
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
22. 22.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
24. 24.True or false: to guess, do not measure is good testing. (a) True (b) False
25. 25.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the strongest? (a) design C (b) design A (c) design B
28. 28.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
29. 29.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) change lots at once (d) record every result
30. 30.🧪 A paper bridge was tested three times. It held 250 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
31. 31.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
32. 32.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
33. 33.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 290 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to change lots at once is good testing. (a) False (b) True
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
37. 37.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) load it with coins
38. 38.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
40. 40.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing

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