Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 462 · 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) record every result (b) guess, do not measure (c) measure the same way (d) change only one thing
2. 2.🧪 A paper bridge was tested three times. It held 380 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design B (b) design C (c) design A
4. 4.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) skip writing results
5. 5.True or false: to repeat each test is poor testing. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) measure the same way (d) use a new load each time
7. 7.True or false: to use a new load each time is poor testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
10. 10.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 230 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to test it only once is poor testing. (a) False (b) True
12. 12.🧪 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 A (b) design B (c) design C
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) use a new load each time (d) hide a failed test
14. 14.🧪 A paper bridge was tested three times. It held 210 g, 80 g and 160 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) test it only once (d) record every result
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change lots at once (d) guess, do not measure
17. 17.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) build it with straws
18. 18.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
19. 19.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 260 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design A (b) design B (c) design C
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
22. 22.True or false: to measure the same way is good testing. (a) False (b) True
23. 23.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
24. 24.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
26. 26.True or false: to change only one thing is good testing. (a) True (b) False
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
28. 28.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
30. 30.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
31. 31.True or false: to measure the same way is poor testing. (a) False (b) True
32. 32.True or false: to record every result is poor testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
34. 34.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
35. 35.True or false: to change lots at once is poor testing. (a) False (b) True
36. 36.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
37. 37.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.True or false: to hide a failed test is poor testing. (a) False (b) True
40. 40.True or false: to test it only once is good testing. (a) True (b) False

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