Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 533 · 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 measure the same way is good testing. (a) False (b) True
2. 2.True or false: to test it only once is good testing. (a) False (b) True
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) build it with straws
4. 4.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
5. 5.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
8. 8.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
9. 9.True or false: to use the same load is poor testing. (a) True (b) False
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design B (b) design C (c) design A
11. 11.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
12. 12.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 90 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) use the same load (d) change lots at once
15. 15.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
17. 17.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) load it with coins
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) guess, do not measure (d) skip writing results
20. 20.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
21. 21.True or false: to record every result is good testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) skip writing results
23. 23.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) sketch three ideas
24. 24.True or false: to change only one thing is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 380 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
27. 27.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A
29. 29.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
30. 30.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
31. 31.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
32. 32.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) hide a failed test (d) change only one thing
33. 33.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
35. 35.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
36. 36.True or false: to guess, do not measure is good testing. (a) True (b) False
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design B (b) design C (c) design A
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
40. 40.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) use the same load (d) change lots at once

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