Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 175 · 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.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
2. 2.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
3. 3.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 390 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to record every result is good testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
8. 8.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
10. 10.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
11. 11.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) change only one thing (d) change lots at once
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) repeat each test (d) measure the same way
14. 14.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) hide a failed test (d) skip writing results
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
16. 16.🧪 A paper bridge was tested three times. It held 400 g, 340 g and 310 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🧪 A paper bridge was tested three times. It held 200 g, 90 g and 250 g. What is the mean (average) load it held, in grams?
20. 20.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) repeat each test (d) skip writing results
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change only one thing (d) guess, do not measure
23. 23.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
24. 24.True or false: to guess, do not measure is poor testing. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) guess, do not measure (d) skip writing results
26. 26.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.True or false: to test it only once is good testing. (a) True (b) False
30. 30.True or false: to change only one thing is good testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) use a new load each time (d) use the same load
32. 32.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
33. 33.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 170 g, 140 g and 140 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 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design B (b) design C (c) design A
36. 36.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
37. 37.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 100 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 200 g, 100 g and 270 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 160 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 260 g. What is the mean (average) load it held, in grams?

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