Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 355 · 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.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
4. 4.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
5. 5.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
6. 6.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
9. 9.True or false: to record every result is good testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
11. 11.True or false: to record every result is poor testing. (a) False (b) True
12. 12.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
14. 14.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
15. 15.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) repeat each test (d) record every result
17. 17.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
19. 19.True or false: to test it only once is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
21. 21.True or false: to change only one thing is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 250 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
24. 24.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to repeat each test is poor testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
28. 28.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
29. 29.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
31. 31.True or false: to guess, do not measure is good testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.True or false: to test it only once is poor testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 190 g. What is the mean (average) load it held, in grams?
35. 35.🔢 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
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
37. 37.True or false: to hide a failed test is poor testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
39. 39.True or false: to skip writing results is good testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) repeat each test (d) measure the same way

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