Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 794 · 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 record every result is poor testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) test it only once (d) record every result
3. 3.🧪 A paper bridge was tested three times. It held 430 g, 340 g and 250 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to use a new load each time is poor testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
6. 6.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 410 g. What is the mean (average) load it held, in grams?
7. 7.🧪 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 strongest? (a) design C (b) design B (c) design A
8. 8.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
9. 9.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) change only one thing
10. 10.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
11. 11.True or false: to hide a failed test is good testing. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) repeat each test (d) hide a failed test
13. 13.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
14. 14.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 350 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) change lots at once (d) test it only once
16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
18. 18.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use a new load each time (d) measure the same way
19. 19.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
20. 20.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
21. 21.True or false: to change only one thing is poor testing. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) change lots at once (d) use the same load
23. 23.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) guess, do not measure (d) measure the same way
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.True or false: to use the same load is poor testing. (a) True (b) False
28. 28.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
29. 29.True or false: to repeat each test is good testing. (a) True (b) False
30. 30.True or false: to measure the same way is poor testing. (a) True (b) False
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.True or false: to use a new load each time is good testing. (a) False (b) True
33. 33.True or false: to measure the same way is good testing. (a) False (b) True
34. 34.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins
36. 36.🧪 A paper bridge was tested three times. It held 350 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 270 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
40. 40.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?

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