Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 53 · 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.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
3. 3.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to use a new load each time is poor testing. (a) False (b) True
5. 5.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
6. 6.True or false: to use the same load is poor testing. (a) True (b) False
7. 7.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
8. 8.True or false: to change lots at once is good testing. (a) True (b) False
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
11. 11.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) build it with straws
12. 12.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
13. 13.True or false: to test it only once is good testing. (a) False (b) True
14. 14.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) use a new load each time (d) record every result
17. 17.True or false: to test it only once is poor testing. (a) False (b) True
18. 18.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
19. 19.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
20. 20.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
21. 21.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to measure the same way is poor testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 210 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 200 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 420 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to repeat each test is good testing. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) repeat each test (d) hide a failed test
30. 30.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) repeat each test (d) test it only once
31. 31.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
32. 32.True or false: to hide a failed test is good testing. (a) True (b) False
33. 33.True or false: to guess, do not measure is poor testing. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use a new load each time (d) change only one thing
35. 35.True or false: to repeat each test is poor testing. (a) True (b) False
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
39. 39.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) use a new load each time
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins

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