Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 675 · 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.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
2. 2.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 370 g. What is the mean (average) load it held, in grams?
3. 3.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 240 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) guess, do not measure (d) hide a failed test
7. 7.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
8. 8.True or false: to change only one thing is good testing. (a) False (b) True
9. 9.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 120 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
12. 12.True or false: to hide a failed test is poor testing. (a) False (b) True
13. 13.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
14. 14.True or false: to guess, do not measure is poor testing. (a) True (b) False
15. 15.True or false: to hide a failed test is good testing. (a) True (b) False
16. 16.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
17. 17.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.True or false: to change lots at once is poor testing. (a) False (b) True
21. 21.🧪 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 weakest? (a) design A (b) design C (c) design B
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) use the same load (d) skip writing results
23. 23.True or false: to guess, do not measure is good testing. (a) True (b) False
24. 24.True or false: to repeat each test is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) record every result (d) measure the same way
27. 27.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) guess, do not measure (d) test it only once
28. 28.🧪 A paper bridge was tested three times. It held 150 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 280 g, 100 g and 190 g. What is the mean (average) load it held, in grams?
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
31. 31.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 230 g, 200 g and 200 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
35. 35.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
37. 37.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) skip writing results (d) repeat each test
38. 38.True or false: to change only one thing is poor testing. (a) True (b) False
39. 39.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
40. 40.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) record every result (d) use the same load

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