Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 76 · 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.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
3. 3.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) repeat each test (d) guess, do not measure
4. 4.True or false: to hide a failed test is poor testing. (a) True (b) False
5. 5.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
6. 6.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
7. 7.True or false: to record every result is good testing. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) repeat each test (d) change lots at once
9. 9.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) measure the same way (d) change only one thing
10. 10.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
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) test it only once (b) measure the same way (c) skip writing results (d) change lots at once
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
15. 15.🧪 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 C (b) design A (c) design B
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.True or false: to guess, do not measure is poor testing. (a) True (b) False
18. 18.True or false: to repeat each test is good testing. (a) False (b) True
19. 19.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
20. 20.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) repeat each test (d) measure the same way
21. 21.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
22. 22.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
23. 23.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
24. 24.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
26. 26.True or false: to use the same load is poor testing. (a) False (b) True
27. 27.True or false: to skip writing results is poor testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) test it only once (d) hide a failed test
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
30. 30.True or false: to repeat each test is poor testing. (a) True (b) False
31. 31.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) test it only once (d) skip writing results
34. 34.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 290 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) load it with coins
39. 39.True or false: to use a new load each time is poor testing. (a) True (b) False
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C

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