Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 99 · 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.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design B (b) design A (c) design C
5. 5.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
6. 6.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 360 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) use the same load (d) measure the same way
8. 8.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 180 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change lots at once (d) test it only once
11. 11.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change only one thing (d) repeat each test
12. 12.True or false: to hide a failed test is good testing. (a) True (b) False
13. 13.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
15. 15.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 240 g. What is the mean (average) load it held, in grams?
16. 16.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) test it only once (d) use a new load each time
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 change only one thing? (a) poor testing (b) good testing
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) measure the same way (d) hide a failed test
21. 21.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
23. 23.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) measure the same way (d) repeat each test
26. 26.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
27. 27.🧪 A paper bridge was tested three times. It held 180 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
28. 28.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
29. 29.🧪 A paper bridge was tested three times. It held 190 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
31. 31.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
32. 32.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 300 g. What is the mean (average) load it held, in grams?
33. 33.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.True or false: to measure the same way is poor testing. (a) False (b) True
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) hide a failed test
40. 40.True or false: to record every result is poor testing. (a) True (b) False

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