Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 992 · 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 change only one thing? (a) good testing (b) poor testing
2. 2.True or false: to record every result is good testing. (a) False (b) True
3. 3.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
6. 6.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
7. 7.True or false: to test it only once is poor testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
10. 10.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
11. 11.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) change lots at once (d) record every result
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) change lots at once (d) test it only once
13. 13.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 410 g. What is the mean (average) load it held, in grams?
14. 14.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
15. 15.True or false: to skip writing results is poor testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
17. 17.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
19. 19.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 270 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) hide a failed test (d) measure the same way
22. 22.True or false: to change lots at once is poor testing. (a) False (b) True
23. 23.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
26. 26.True or false: to change only one thing is poor testing. (a) True (b) False
27. 27.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
28. 28.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
29. 29.True or false: to measure the same way is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change only one thing (d) repeat each test
31. 31.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design B (b) design C (c) design A
33. 33.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
34. 34.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use the same load (d) measure the same way
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
36. 36.🧪 A paper bridge was tested three times. It held 210 g, 170 g and 160 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to use a new load each time is good testing. (a) False (b) True
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
39. 39.True or false: to change only one thing is good testing. (a) False (b) True
40. 40.True or false: to repeat each test is poor testing. (a) False (b) True

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