Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 990 · 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.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
3. 3.🧪 A paper bridge was tested three times. It held 200 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
4. 4.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) build it with straws
5. 5.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
7. 7.🧪 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 weakest? (a) design A (b) design C (c) design B
8. 8.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 120 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
14. 14.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) measure the same way (d) change only one thing
17. 17.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
18. 18.True or false: to record every result is good testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 90 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) load it with coins
21. 21.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) change lots at once (d) change only one thing
22. 22.🧪 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
23. 23.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) load it with coins
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
25. 25.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) test it only once (d) change lots at once
27. 27.True or false: to skip writing results is poor testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 400 g, 310 g and 220 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to use the same load is poor testing. (a) True (b) False
30. 30.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 270 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) repeat each test (d) skip writing results
33. 33.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 400 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use a new load each time (d) measure the same way
37. 37.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🧪 A paper bridge was tested three times. It held 350 g, 180 g and 220 g. What is the mean (average) load it held, in grams?

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