Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 220 · 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) skip writing results (b) test it only once (c) hide a failed test (d) repeat each test
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
3. 3.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
5. 5.True or false: to hide a failed test is good testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 230 g and 240 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
10. 10.True or false: to change lots at once is good testing. (a) True (b) False
11. 11.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
13. 13.🧪 A paper bridge was tested three times. It held 200 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) use the same load
15. 15.🔢 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) build it with straws
16. 16.🧪 A paper bridge was tested three times. It held 180 g, 140 g and 130 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) record every result (d) skip writing results
18. 18.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
19. 19.True or false: to test it only once is poor testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) measure the same way (d) guess, do not measure
21. 21.True or false: to skip writing results is good testing. (a) False (b) True
22. 22.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
24. 24.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
25. 25.True or false: to record every result is poor testing. (a) True (b) False
26. 26.True or false: to test it only once is good testing. (a) True (b) False
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
28. 28.True or false: to change only one thing is good testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
30. 30.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
31. 31.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
32. 32.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) test it only once (d) hide a failed test
35. 35.🧪 A paper bridge was tested three times. It held 270 g, 120 g and 150 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to record every result is good testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
39. 39.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) use a new load each time
40. 40.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) guess, do not measure (d) use the same load

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