Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 558 · 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 use the same load is good testing. (a) False (b) True
2. 2.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) choose and draw one
5. 5.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) measure the same way (d) guess, do not measure
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
9. 9.True or false: to skip writing results is good testing. (a) True (b) False
10. 10.🔢 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) build it with straws
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
12. 12.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
14. 14.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) hide a failed test
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design C (c) design B
16. 16.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
19. 19.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
20. 20.🧪 A paper bridge was tested three times. It held 390 g, 260 g and 400 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) use a new load each time (d) guess, do not measure
22. 22.🧪 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
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) skip writing results (d) use the same load
24. 24.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change lots at once (d) change only one thing
26. 26.🧪 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?
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) choose and draw one
28. 28.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
29. 29.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change only one thing (d) record every result
31. 31.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
32. 32.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
34. 34.True or false: to hide a failed test is good testing. (a) False (b) True
35. 35.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
37. 37.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) change lots at once (d) use a new load each time
38. 38.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) skip writing results (d) use the same load
40. 40.True or false: to repeat each test is good testing. (a) False (b) True

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