Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 607 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.True or false: to use a new load each time is poor testing. (a) False (b) True
3. 3.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
4. 4.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
5. 5.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
6. 6.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
7. 7.True or false: to measure the same way is poor testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 200 g, 130 g and 120 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change only one thing (d) change lots at once
10. 10.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
12. 12.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
13. 13.True or false: to guess, do not measure is poor testing. (a) False (b) True
14. 14.True or false: to use the same load is good testing. (a) True (b) False
15. 15.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design A (b) design C (c) design B
18. 18.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
19. 19.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
20. 20.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) record every result (d) use the same load
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) use a new load each time (d) change lots at once
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
25. 25.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
27. 27.🧪 A paper bridge was tested three times. It held 410 g, 310 g and 330 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 190 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 390 g, 310 g and 320 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
32. 32.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
33. 33.True or false: to skip writing results is good testing. (a) False (b) True
34. 34.True or false: to test it only once is good testing. (a) True (b) False
35. 35.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one
37. 37.True or false: to change lots at once is poor testing. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) use the same load (d) change lots at once
39. 39.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) change only one thing (d) measure the same way
40. 40.🧪 A paper bridge was tested three times. It held 180 g, 160 g and 200 g. What is the mean (average) load it held, in grams?

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