Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 437 · 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 260 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
3. 3.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.True or false: to skip writing results is poor testing. (a) False (b) True
7. 7.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design C (b) design A (c) design B
9. 9.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design B (b) design A (c) design C
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) guess, do not measure
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
14. 14.True or false: to measure the same way is poor testing. (a) False (b) True
15. 15.True or false: to change only one thing is good testing. (a) True (b) False
16. 16.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) use a new load each time (d) change lots at once
18. 18.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 260 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) change lots at once
21. 21.🧪 A paper bridge was tested three times. It held 330 g, 140 g and 250 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
23. 23.🧪 A paper bridge was tested three times. It held 360 g, 180 g and 240 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
25. 25.True or false: to guess, do not measure is good testing. (a) True (b) False
26. 26.True or false: to skip writing results is good testing. (a) True (b) False
27. 27.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
28. 28.True or false: to change lots at once is poor testing. (a) True (b) False
29. 29.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
30. 30.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 110 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 160 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
33. 33.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
34. 34.🔢 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
35. 35.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) measure the same way
36. 36.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) load it with coins
37. 37.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) load it with coins
38. 38.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 350 g, 160 g and 270 g. What is the mean (average) load it held, in grams?
40. 40.🧪 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

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