Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 296 · 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.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
2. 2.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
3. 3.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) hide a failed test (d) measure the same way
5. 5.True or false: to record every result is good testing. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use the same load (d) measure the same way
7. 7.True or false: to guess, do not measure is good testing. (a) False (b) True
8. 8.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
9. 9.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) use a new load each time (d) repeat each test
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) hide a failed test (d) repeat each test
12. 12.🧪 A paper bridge was tested three times. It held 350 g, 320 g and 350 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.True or false: to guess, do not measure is poor testing. (a) True (b) False
15. 15.True or false: to use a new load each time is good testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
17. 17.True or false: to hide a failed test is good testing. (a) False (b) True
18. 18.True or false: to skip writing results is poor testing. (a) False (b) True
19. 19.True or false: to test it only once is good testing. (a) True (b) False
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
22. 22.🔢 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
23. 23.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
24. 24.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
25. 25.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
26. 26.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
27. 27.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 220 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 190 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) measure the same way (d) change only one thing
30. 30.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) test it only once (d) use the same load
31. 31.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 260 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to change lots at once is poor testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
34. 34.🔢 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
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) test it only once (d) change lots at once
36. 36.True or false: to test it only once is poor testing. (a) True (b) False
37. 37.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
38. 38.True or false: to hide a failed test is poor testing. (a) False (b) True
39. 39.True or false: to change only one thing is good testing. (a) True (b) False
40. 40.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?

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