Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 652 · 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.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) change lots at once (d) use the same load
4. 4.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
5. 5.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
6. 6.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
8. 8.🧪 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
9. 9.🧪 A paper bridge was tested three times. It held 210 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
10. 10.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
11. 11.True or false: to use the same load is poor testing. (a) True (b) False
12. 12.True or false: to skip writing results is good testing. (a) True (b) False
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) build it with straws
14. 14.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) guess, do not measure (d) change only one thing
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
19. 19.🧪 A paper bridge was tested three times. It held 350 g, 190 g and 210 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
21. 21.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) test it only once
23. 23.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 320 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) hide a failed test (d) change only one thing
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) repeat each test (d) test it only once
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design C (b) design A (c) design B
29. 29.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design B (b) design A (c) design C
31. 31.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
32. 32.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
33. 33.True or false: to record every result is good testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
35. 35.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) skip writing results
36. 36.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 110 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
39. 39.True or false: to repeat each test is poor testing. (a) True (b) False
40. 40.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?

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