Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 613 · 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.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) test it only once
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
3. 3.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) guess, do not measure (d) use the same load
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
6. 6.🧪 A paper bridge was tested three times. It held 340 g, 230 g and 240 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 200 g, 80 g and 170 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) use the same load (d) change only one thing
9. 9.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 250 g. What is the mean (average) load it held, in grams?
10. 10.🔢 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
11. 11.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 90 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
13. 13.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 300 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
16. 16.🧪 A paper bridge was tested three times. It held 260 g, 210 g and 160 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
18. 18.True or false: to guess, do not measure is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) read the challenge rules
20. 20.True or false: to skip writing results is good testing. (a) False (b) True
21. 21.True or false: to use the same load is good testing. (a) False (b) True
22. 22.True or false: to record every result is good testing. (a) False (b) True
23. 23.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
24. 24.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
26. 26.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
27. 27.True or false: to test it only once is good testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 210 g and 260 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change only one thing (d) measure the same way
32. 32.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
34. 34.🧪 A paper bridge was tested three times. It held 310 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
36. 36.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 310 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
38. 38.🔢 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
39. 39.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design A (b) design C (c) design B

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