Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 277 · 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) use the same load (b) change lots at once (c) change only one thing (d) repeat each test
2. 2.True or false: to change lots at once is poor testing. (a) False (b) True
3. 3.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
4. 4.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) strengthen the weak part
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the weakest? (a) design B (b) design A (c) design C
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design C (b) design B (c) design A
7. 7.True or false: to record every result is poor testing. (a) True (b) False
8. 8.True or false: to skip writing results is good testing. (a) True (b) False
9. 9.True or false: to hide a failed test is poor testing. (a) False (b) True
10. 10.🔍 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
11. 11.True or false: to change only one thing is poor testing. (a) False (b) True
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
13. 13.True or false: to measure the same way is good testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 160 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.True or false: to guess, do not measure is poor testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) record every result (d) use the same load
18. 18.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
20. 20.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
21. 21.True or false: to change only one thing is good testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
23. 23.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) read the challenge rules
24. 24.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
25. 25.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) use the same load (d) record every result
27. 27.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
30. 30.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change lots at once (d) guess, do not measure
32. 32.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) hide a failed test (d) change only one thing
33. 33.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) choose and draw one
34. 34.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design B (c) design C
36. 36.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) use the same load
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.True or false: to change lots at once is good testing. (a) True (b) False
39. 39.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?

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