Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 746 · 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.🧪 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 weakest? (a) design C (b) design A (c) design B
2. 2.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change lots at once (d) guess, do not measure
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) repeat each test (d) record every result
4. 4.True or false: to measure the same way is poor testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
6. 6.True or false: to record every result is good testing. (a) False (b) True
7. 7.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
8. 8.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.True or false: to use the same load is poor testing. (a) True (b) False
11. 11.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
12. 12.🧪 A paper bridge was tested three times. It held 320 g, 300 g and 310 g. What is the mean (average) load it held, in grams?
13. 13.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
14. 14.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
15. 15.True or false: to use a new load each time is poor testing. (a) True (b) False
16. 16.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
17. 17.True or false: to skip writing results is poor testing. (a) True (b) False
18. 18.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 410 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 380 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the weakest? (a) design A (b) design B (c) design C
25. 25.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) measure the same way (d) repeat each test
27. 27.True or false: to change lots at once is good testing. (a) True (b) False
28. 28.🧪 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
29. 29.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) build it with straws
30. 30.🧪 A paper bridge was tested three times. It held 430 g, 260 g and 330 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) guess, do not measure (d) record every result
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
33. 33.True or false: to guess, do not measure is poor testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
35. 35.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
36. 36.True or false: to use a new load each time is good testing. (a) False (b) True
37. 37.True or false: to repeat each test is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 280 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) skip writing results (d) record every result
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design A (b) design C (c) design B

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