Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 895 · 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.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) build it with straws
3. 3.True or false: to measure the same way is poor testing. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) test it only once (d) skip writing results
5. 5.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
6. 6.True or false: to change lots at once is poor testing. (a) False (b) True
7. 7.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) repeat each test (d) measure the same way
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
12. 12.True or false: to use the same load is good testing. (a) True (b) False
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
14. 14.True or false: to skip writing results is good testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 410 g, 350 g and 290 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
17. 17.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
18. 18.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
19. 19.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) measure the same way (d) guess, do not measure
20. 20.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 190 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
23. 23.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
24. 24.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
25. 25.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 230 g. What is the mean (average) load it held, in grams?
26. 26.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
27. 27.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) test it only once (d) use the same load
28. 28.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
29. 29.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) test it only once (d) change lots at once
30. 30.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 300 g. What is the mean (average) load it held, in grams?
31. 31.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
37. 37.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
38. 38.True or false: to test it only once is poor testing. (a) False (b) True
39. 39.True or false: to change only one thing is poor testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 160 g, 80 g and 240 g. What is the mean (average) load it held, in grams?

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