Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 760 · 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.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) record every result (d) repeat each test
2. 2.🧪 A paper bridge was tested three times. It held 340 g, 230 g and 390 g. What is the mean (average) load it held, in grams?
3. 3.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
4. 4.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) use a new load each time
7. 7.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
8. 8.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 280 g. What is the mean (average) load it held, in grams?
9. 9.🧪 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 weakest? (a) design C (b) design A (c) design B
10. 10.🧪 A paper bridge was tested three times. It held 420 g, 330 g and 270 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design A (b) design B (c) design C
12. 12.🧪 A paper bridge was tested three times. It held 290 g, 250 g and 270 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
16. 16.🧪 A paper bridge was tested three times. It held 300 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use the same load (d) repeat each test
18. 18.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) hide a failed test
20. 20.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) test it only once (d) repeat each test
21. 21.True or false: to hide a failed test is poor testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) test it only once (d) change lots at once
23. 23.True or false: to measure the same way is good testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🧪 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
27. 27.True or false: to test it only once is poor testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
29. 29.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
30. 30.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
32. 32.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
34. 34.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
35. 35.True or false: to guess, do not measure is poor testing. (a) False (b) True
36. 36.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 430 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
39. 39.True or false: to record every result is good testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 220 g. What is the mean (average) load it held, in grams?

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