Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 83 · 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.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 260 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) repeat each test (d) measure the same way
3. 3.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
4. 4.🧪 A paper bridge was tested three times. It held 410 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to guess, do not measure is poor testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to test it only once is good testing. (a) False (b) True
8. 8.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
9. 9.True or false: to measure the same way is poor testing. (a) False (b) True
10. 10.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
13. 13.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) change only one thing (d) repeat each test
15. 15.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
16. 16.True or false: to change lots at once is poor testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 130 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) guess, do not measure (d) use the same load
19. 19.True or false: to record every result is poor testing. (a) True (b) False
20. 20.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) test it only once
22. 22.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
24. 24.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 340 g. What is the mean (average) load it held, in grams?
25. 25.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
26. 26.🧪 A paper bridge was tested three times. It held 290 g, 110 g and 170 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) change lots at once (d) skip writing results
28. 28.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
29. 29.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
30. 30.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) change only one thing (d) change lots at once
32. 32.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) skip writing results (d) guess, do not measure
34. 34.🧪 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 A (b) design B (c) design C
35. 35.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 100 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design A (b) design B (c) design C
38. 38.True or false: to guess, do not measure is good testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules

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