Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 494 · 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.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) record every result (d) test it only once
2. 2.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
3. 3.🧪 A paper bridge was tested three times. It held 170 g, 160 g and 150 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) test it only once
6. 6.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) load it with coins
8. 8.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
9. 9.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
10. 10.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
11. 11.🧪 A paper bridge was tested three times. It held 400 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
12. 12.True or false: to hide a failed test is good testing. (a) True (b) False
13. 13.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
14. 14.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 360 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
16. 16.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 320 g and 360 g. What is the mean (average) load it held, in grams?
19. 19.🧪 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 strongest? (a) design C (b) design B (c) design A
20. 20.True or false: to guess, do not measure is good testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
22. 22.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use a new load each time (d) record every result
23. 23.True or false: to measure the same way is good testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
25. 25.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
27. 27.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
28. 28.True or false: to repeat each test is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.True or false: to hide a failed test is poor testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
33. 33.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change only one thing (d) repeat each test
34. 34.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
38. 38.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
40. 40.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) skip writing results (d) change only one thing

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