Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 351 · 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 use the same load is good testing. (a) False (b) True
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) load it with coins
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
4. 4.True or false: to record every result is poor testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 190 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
7. 7.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 160 g. What is the mean (average) load it held, in grams?
8. 8.True or false: to test it only once is poor testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change only one thing (d) use the same load
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
13. 13.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
14. 14.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
15. 15.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
16. 16.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
18. 18.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 170 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) record every result
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
23. 23.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
24. 24.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) guess, do not measure
25. 25.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
27. 27.🧪 A paper bridge was tested three times. It held 200 g, 90 g and 280 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
29. 29.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
30. 30.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
33. 33.True or false: to change lots at once is good testing. (a) True (b) False
34. 34.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.True or false: to change only one thing is good testing. (a) True (b) False
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
38. 38.True or false: to use a new load each time is good testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
40. 40.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?

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