Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 487 · 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) guess, do not measure (c) skip writing results (d) test it only once
2. 2.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
3. 3.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
4. 4.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 190 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
6. 6.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
7. 7.True or false: to change lots at once is poor testing. (a) False (b) True
8. 8.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
9. 9.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
10. 10.🧪 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 weakest? (a) design A (b) design C (c) design B
11. 11.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
12. 12.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
13. 13.🧪 A paper bridge was tested three times. It held 290 g, 130 g and 180 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 360 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) record every result
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) sketch three ideas
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
19. 19.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
21. 21.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
23. 23.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
26. 26.True or false: to record every result is poor testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to use the same load is poor testing. (a) True (b) False
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change lots at once (d) change only one thing
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
32. 32.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 190 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
34. 34.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) use the same load (d) measure the same way
35. 35.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) measure the same way (d) change only one thing
37. 37.True or false: to test it only once is good testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
39. 39.True or false: to repeat each test is poor testing. (a) False (b) True
40. 40.True or false: to measure the same way is good testing. (a) False (b) True

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