Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 914 · 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.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
2. 2.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
3. 3.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) change lots at once (d) hide a failed test
4. 4.🧪 A paper bridge was tested three times. It held 440 g, 310 g and 300 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
6. 6.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
7. 7.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) test it only once (d) repeat each test
12. 12.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
13. 13.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
14. 14.True or false: to use the same load is good testing. (a) True (b) False
15. 15.True or false: to repeat each test is poor testing. (a) True (b) False
16. 16.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
17. 17.True or false: to guess, do not measure is good testing. (a) True (b) False
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design B (b) design A (c) design C
21. 21.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
22. 22.True or false: to change lots at once is poor testing. (a) False (b) True
23. 23.True or false: to test it only once is poor testing. (a) False (b) True
24. 24.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design C (b) design B (c) design A
28. 28.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
29. 29.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
30. 30.True or false: to skip writing results is poor testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 120 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to record every result is poor testing. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) use a new load each time (d) guess, do not measure
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
37. 37.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
38. 38.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
39. 39.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
40. 40.True or false: to change lots at once is good testing. (a) False (b) True

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