Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 842 · 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 repeat each test? (a) poor testing (b) good testing
2. 2.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 210 g. What is the mean (average) load it held, in grams?
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) repeat each test (d) change lots at once
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) change lots at once
6. 6.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
8. 8.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
10. 10.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 290 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to test it only once is good testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
13. 13.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 220 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to change lots at once is good testing. (a) True (b) False
16. 16.True or false: to hide a failed test is poor testing. (a) False (b) True
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
18. 18.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) repeat each test (d) measure the same way
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
20. 20.True or false: to use the same load is good testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 170 g, 90 g and 250 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) test it only once (d) measure the same way
24. 24.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) read the challenge rules
26. 26.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) measure the same way (d) repeat each test
27. 27.🧪 A paper bridge was tested three times. It held 180 g, 160 g and 140 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) test it only once (d) change only one thing
30. 30.True or false: to guess, do not measure is good testing. (a) True (b) False
31. 31.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 190 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 240 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
37. 37.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) change lots at once (d) test it only once
38. 38.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
39. 39.True or false: to repeat each test is good testing. (a) False (b) True
40. 40.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part

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