Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 14 · 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 change lots at once is poor testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) repeat each test (d) change only one thing
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) choose and draw one
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 150 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
7. 7.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) choose and draw one (d) strengthen the weak part
10. 10.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) skip writing results
11. 11.True or false: to test it only once is poor testing. (a) False (b) True
12. 12.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
13. 13.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
14. 14.True or false: to test it only once is good testing. (a) True (b) False
15. 15.True or false: to repeat each test is poor testing. (a) False (b) True
16. 16.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
17. 17.🧪 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
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
20. 20.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 260 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to use the same load is good testing. (a) False (b) True
22. 22.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
23. 23.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
24. 24.🧪 A paper bridge was tested three times. It held 240 g, 80 g and 130 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design C (b) design A (c) design B
26. 26.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
28. 28.True or false: to skip writing results is poor testing. (a) True (b) False
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
30. 30.True or false: to hide a failed test is good testing. (a) True (b) False
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.True or false: to measure the same way is poor testing. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) record every result (d) guess, do not measure
34. 34.🧪 A paper bridge was tested three times. It held 360 g, 180 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) change only one thing (d) guess, do not measure
36. 36.🧪 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 weakest? (a) design C (b) design A (c) design B
37. 37.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) load it with coins
38. 38.🧪 A paper bridge was tested three times. It held 320 g, 240 g and 400 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to repeat each test is good testing. (a) True (b) False
40. 40.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?

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