Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 152 · 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) one (b) all of them (c) none (d) two
2. 2.True or false: to record every result is good testing. (a) True (b) False
3. 3.True or false: to repeat each test is poor testing. (a) True (b) False
4. 4.True or false: to record every result is poor testing. (a) True (b) False
5. 5.True or false: to change only one thing is poor testing. (a) False (b) True
6. 6.🧪 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
7. 7.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) skip writing results (d) change lots at once
8. 8.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 140 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
10. 10.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) measure the same way (d) repeat each test
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) strengthen the weak part
12. 12.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
13. 13.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change only one thing (d) use the same load
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use a new load each time (d) change only one thing
15. 15.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
16. 16.True or false: to use the same load is good testing. (a) False (b) True
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
18. 18.True or false: to measure the same way is poor testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) use a new load each time (d) test it only once
21. 21.🔢 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) load it with coins (d) strengthen the weak part
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design B (b) design C (c) design A
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
24. 24.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
25. 25.🧪 A paper bridge was tested three times. It held 410 g, 340 g and 300 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) record every result (d) measure the same way
27. 27.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
28. 28.True or false: to use the same load is poor testing. (a) True (b) False
29. 29.True or false: to hide a failed test is poor testing. (a) False (b) True
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design B (b) design C (c) design A
31. 31.True or false: to change lots at once is good testing. (a) False (b) True
32. 32.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 310 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
36. 36.🧪 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 weakest? (a) design B (b) design C (c) design A
37. 37.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) change only one thing (d) repeat each test
38. 38.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
39. 39.🧪 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 strongest? (a) design B (b) design C (c) design A
40. 40.True or false: to change lots at once is poor testing. (a) False (b) True

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