Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 425 · 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 hide a failed test is poor testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) use the same load (d) measure the same way
3. 3.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
4. 4.True or false: to repeat each test is poor testing. (a) True (b) False
5. 5.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change lots at once (d) hide a failed test
7. 7.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
9. 9.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
11. 11.🧪 A paper bridge was tested three times. It held 150 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
13. 13.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design C (b) design A (c) design B
15. 15.True or false: to use a new load each time is good testing. (a) True (b) False
16. 16.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) measure the same way (d) repeat each test
18. 18.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) guess, do not measure (d) change lots at once
19. 19.🧪 A paper bridge was tested three times. It held 260 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
21. 21.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
22. 22.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 100 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to change only one thing is poor testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) measure the same way (d) guess, do not measure
25. 25.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
27. 27.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) choose and draw one
29. 29.🧪 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 A (b) design C (c) design B
30. 30.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) measure the same way (d) repeat each test
32. 32.🧪 A paper bridge was tested three times. It held 410 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
34. 34.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) use a new load each time
35. 35.True or false: to skip writing results is good testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 140 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
38. 38.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
39. 39.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 340 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design B (b) design A (c) design C

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