Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 42 · 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.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
2. 2.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
3. 3.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
5. 5.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
7. 7.True or false: to use the same load is good testing. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) use a new load each time (d) change lots at once
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) record every result (d) test it only once
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) build it with straws
12. 12.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
13. 13.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
15. 15.True or false: to change only one thing is poor testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.True or false: to measure the same way is good testing. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) measure the same way (d) hide a failed test
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
20. 20.🧪 A paper bridge was tested three times. It held 310 g, 160 g and 310 g. What is the mean (average) load it held, in grams?
21. 21.🧪 A paper bridge was tested three times. It held 180 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
23. 23.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use the same load (d) record every result
26. 26.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
27. 27.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
28. 28.True or false: to skip writing results is good testing. (a) True (b) False
29. 29.🧪 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 C (b) design A (c) design B
30. 30.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.True or false: to test it only once is poor testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
36. 36.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the strongest? (a) design B (b) design A (c) design C
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
39. 39.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 370 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to record every result is poor testing. (a) False (b) True

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