Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 187 · 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.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) use a new load each time (d) skip writing results
3. 3.🧪 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 A (b) design C (c) design B
4. 4.🧪 A paper bridge was tested three times. It held 220 g, 100 g and 220 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use a new load each time (d) use the same load
6. 6.True or false: to test it only once is good testing. (a) True (b) False
7. 7.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
8. 8.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 180 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.True or false: to repeat each test is poor testing. (a) True (b) False
12. 12.True or false: to hide a failed test is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
15. 15.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 320 g. What is the mean (average) load it held, in grams?
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
17. 17.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) hide a failed test
18. 18.True or false: to test it only once is poor testing. (a) True (b) False
19. 19.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
20. 20.True or false: to change only one thing is good testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) skip writing results
23. 23.🧪 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 weakest? (a) design C (b) design A (c) design B
24. 24.🧪 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 B (b) design A (c) design C
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) load it with coins
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) guess, do not measure (d) repeat each test
27. 27.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 290 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to skip writing results is poor testing. (a) True (b) False
29. 29.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) skip writing results (d) change only one thing
31. 31.True or false: to skip writing results is good testing. (a) False (b) True
32. 32.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
33. 33.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 80 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) change only one thing (d) hide a failed test
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
36. 36.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) read the challenge rules
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) record every result (d) test it only once
38. 38.🧪 A paper bridge was tested three times. It held 210 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 310 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) skip writing results (d) measure the same way

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