Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 352 · 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) the final product (c) a broken part (d) an early test model
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
3. 3.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
4. 4.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
5. 5.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
6. 6.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
8. 8.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
10. 10.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.True or false: to use the same load is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) guess, do not measure
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use a new load each time (d) change lots at once
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
18. 18.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
19. 19.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
20. 20.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
21. 21.True or false: to record every result is poor testing. (a) False (b) True
22. 22.True or false: to measure the same way is poor testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to use a new load each time is poor testing. (a) True (b) False
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 290 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design A (b) design B (c) design C
27. 27.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
30. 30.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) skip writing results (d) use the same load
32. 32.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
33. 33.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
34. 34.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
35. 35.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
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 use the same load is good testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) choose and draw one
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the strongest? (a) design B (b) design C (c) design A

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