Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 451 · 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.🧪 A paper bridge was tested three times. It held 310 g, 280 g and 280 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
3. 3.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
4. 4.True or false: to test it only once is good testing. (a) True (b) False
5. 5.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
6. 6.True or false: to skip writing results is good testing. (a) False (b) True
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.True or false: to measure the same way is good testing. (a) False (b) True
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
10. 10.🧪 A paper bridge was tested three times. It held 190 g, 70 g and 250 g. What is the mean (average) load it held, in grams?
11. 11.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
12. 12.True or false: to repeat each test is good testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) skip writing results (d) test it only once
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) hide a failed test (d) test it only once
15. 15.🔢 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) sketch three ideas
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the strongest? (a) design B (b) design C (c) design A
17. 17.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
18. 18.True or false: to record every result is poor testing. (a) False (b) True
19. 19.True or false: to guess, do not measure is poor testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) hide a failed test (d) record every result
21. 21.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design B (b) design A (c) design C
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design C (b) design A (c) design B
24. 24.🔍 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
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
26. 26.True or false: to change only one thing is poor testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to use a new load each time is poor testing. (a) False (b) True
29. 29.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design C (c) design B
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
33. 33.🧪 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
34. 34.True or false: to use the same load is good testing. (a) False (b) True
35. 35.True or false: to record every result is good testing. (a) True (b) False
36. 36.True or false: to change lots at once is poor testing. (a) True (b) False
37. 37.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
38. 38.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
39. 39.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules

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