Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 860 · 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 guess, do not measure is good testing. (a) False (b) True
2. 2.True or false: to skip writing results is good testing. (a) False (b) True
3. 3.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
6. 6.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
7. 7.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
8. 8.True or false: to measure the same way is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
10. 10.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
11. 11.True or false: to record every result is poor testing. (a) False (b) True
12. 12.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) sketch three ideas
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
15. 15.True or false: to use a new load each time is good testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) guess, do not measure (d) change only one thing
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the weakest? (a) design A (b) design B (c) design C
19. 19.True or false: to change lots at once is poor testing. (a) False (b) True
20. 20.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) build it with straws
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
22. 22.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 300 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
24. 24.True or false: to skip writing results is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 340 g, 340 g and 340 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) record every result
28. 28.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) record every result (d) change lots at once
30. 30.🧪 A paper bridge was tested three times. It held 220 g, 60 g and 170 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the strongest? (a) design B (b) design A (c) design C
32. 32.🧪 A paper bridge was tested three times. It held 260 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 190 g, 120 g and 260 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) guess, do not measure (d) change lots at once
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
39. 39.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
40. 40.True or false: to repeat each test is poor testing. (a) False (b) True

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