Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 548 · 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 use a new load each time? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change only one thing (d) record every result
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
4. 4.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
5. 5.True or false: to use a new load each time is good testing. (a) False (b) True
6. 6.True or false: to change lots at once is poor testing. (a) False (b) True
7. 7.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
8. 8.True or false: to skip writing results is good testing. (a) True (b) False
9. 9.True or false: to use a new load each time is poor testing. (a) False (b) True
10. 10.True or false: to test it only once is good testing. (a) False (b) True
11. 11.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
12. 12.True or false: to measure the same way is good testing. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) hide a failed test (d) skip writing results
14. 14.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
15. 15.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
16. 16.🧪 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?
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
18. 18.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use a new load each time (d) hide a failed test
19. 19.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 140 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 200 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) build it with straws
25. 25.🧪 A paper bridge was tested three times. It held 300 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design B (c) design C
28. 28.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
29. 29.True or false: to change only one thing is poor testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
32. 32.True or false: to use the same load is good testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) load it with coins
34. 34.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) test it only once (d) repeat each test
36. 36.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) use the same load (d) test it only once

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