Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 85 · 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.True or false: to record every result is good testing. (a) False (b) True
2. 2.True or false: to use the same load is poor testing. (a) True (b) False
3. 3.True or false: to hide a failed test is good testing. (a) True (b) False
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
5. 5.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) hide a failed test (d) change lots at once
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) record every result (d) change only one thing
9. 9.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
10. 10.True or false: to change only one thing is good testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
13. 13.🧪 A paper bridge was tested three times. It held 320 g, 240 g and 190 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change only one thing (d) record every result
15. 15.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 300 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) read the challenge rules
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) measure the same way
19. 19.True or false: to hide a failed test is poor testing. (a) False (b) True
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.True or false: to measure the same way is poor testing. (a) True (b) False
22. 22.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
23. 23.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
24. 24.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) change only one thing
25. 25.True or false: to repeat each test is good testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design B (b) design A (c) design C
28. 28.True or false: to change lots at once is good testing. (a) False (b) True
29. 29.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
30. 30.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
31. 31.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
33. 33.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
34. 34.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
35. 35.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
37. 37.True or false: to record every result is poor testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
39. 39.True or false: to guess, do not measure is good testing. (a) False (b) True
40. 40.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing

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