Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 155 · 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) repeat each test (b) test it only once (c) hide a failed test (d) guess, do not measure
2. 2.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
3. 3.True or false: to skip writing results is good testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
8. 8.True or false: to repeat each test is poor testing. (a) True (b) False
9. 9.🧪 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
10. 10.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
13. 13.🧪 A paper bridge was tested three times. It held 280 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
15. 15.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
16. 16.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) skip writing results
17. 17.True or false: to use a new load each time is good testing. (a) False (b) True
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design B (b) design C (c) design A
19. 19.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 80 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) test it only once
21. 21.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) sketch three ideas
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
24. 24.True or false: to use a new load each time is poor testing. (a) False (b) True
25. 25.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 340 g, 330 g and 350 g. What is the mean (average) load it held, in grams?
27. 27.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
28. 28.True or false: to record every result is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 330 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) record every result (d) change only one thing
31. 31.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 150 g. What is the mean (average) load it held, in grams?
32. 32.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
34. 34.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) change only one thing (d) hide a failed test
35. 35.🧪 A paper bridge was tested three times. It held 280 g, 100 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 190 g, 70 g and 190 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) build it with straws
40. 40.True or false: to use the same load is poor testing. (a) False (b) True

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