Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 543 · 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.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) guess, do not measure (d) change lots at once
2. 2.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 290 g. What is the mean (average) load it held, in grams?
3. 3.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) load it with coins
4. 4.True or false: to guess, do not measure is good testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
6. 6.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to measure the same way is poor testing. (a) False (b) True
8. 8.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
9. 9.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) change only one thing (d) record every result
12. 12.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 290 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 230 g, 60 g and 160 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
15. 15.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) change only one thing (d) measure the same way
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
19. 19.🧪 A paper bridge was tested three times. It held 150 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
21. 21.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
22. 22.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
23. 23.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) test it only once (d) change only one thing
24. 24.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
28. 28.True or false: to change lots at once is poor testing. (a) True (b) False
29. 29.True or false: to test it only once is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) change only one thing (d) record every result
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
32. 32.🧪 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 weakest? (a) design C (b) design B (c) design A
33. 33.True or false: to change lots at once is good testing. (a) True (b) False
34. 34.True or false: to change only one thing is good testing. (a) False (b) True
35. 35.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 200 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to test it only once is good testing. (a) True (b) False
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.🧪 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
39. 39.True or false: to record every result is poor testing. (a) True (b) False
40. 40.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing

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