Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 17 · 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.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.True or false: to use the same load is poor testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🧪 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
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
9. 9.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) change lots at once
11. 11.🧪 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 C (c) design B
12. 12.True or false: to test it only once is poor testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) load it with coins
14. 14.True or false: to change lots at once is good testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.True or false: to test it only once is good testing. (a) True (b) False
17. 17.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
18. 18.True or false: to hide a failed test is poor testing. (a) True (b) False
19. 19.True or false: to repeat each test is poor testing. (a) True (b) False
20. 20.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
21. 21.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
22. 22.True or false: to measure the same way is poor testing. (a) False (b) True
23. 23.True or false: to skip writing results is good testing. (a) True (b) False
24. 24.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) record every result (d) change lots at once
27. 27.True or false: to record every result is poor testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) measure the same way (d) hide a failed test
29. 29.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
30. 30.🔢 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
31. 31.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 230 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) test it only once (d) change only one thing
33. 33.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 70 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
36. 36.True or false: to measure the same way is good testing. (a) False (b) True
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design A (b) design C (c) design B
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 70 g and 150 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A

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