Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 586 · 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.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
2. 2.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
5. 5.True or false: to record every result is good testing. (a) False (b) True
6. 6.True or false: to guess, do not measure is good testing. (a) True (b) False
7. 7.True or false: to hide a failed test is poor testing. (a) False (b) True
8. 8.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
9. 9.🔢 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
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) record every result
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) change lots at once (d) measure the same way
12. 12.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
13. 13.True or false: to repeat each test is poor testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 220 g, 70 g and 190 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to use the same load is poor testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
18. 18.🧪 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 weakest? (a) design C (b) design B (c) design A
19. 19.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
21. 21.True or false: to hide a failed test is good testing. (a) True (b) False
22. 22.True or false: to change only one thing is poor testing. (a) True (b) False
23. 23.True or false: to measure the same way is poor testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 440 g, 340 g and 270 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
26. 26.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
27. 27.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) record every result
28. 28.True or false: to use the same load is good testing. (a) False (b) True
29. 29.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change lots at once (d) change only one thing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.🧪 A paper bridge was tested three times. It held 350 g, 350 g and 350 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
34. 34.True or false: to change lots at once is poor testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
36. 36.True or false: to guess, do not measure is poor testing. (a) False (b) True
37. 37.True or false: to record every result is poor testing. (a) True (b) False
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
39. 39.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws

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