Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 61 · 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.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
2. 2.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
3. 3.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
6. 6.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) use the same load (d) use a new load each time
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
10. 10.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
11. 11.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
12. 12.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
13. 13.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) use a new load each time (d) change only one thing
14. 14.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) use a new load each time (d) record every result
15. 15.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
17. 17.True or false: to use a new load each time is poor testing. (a) True (b) False
18. 18.True or false: to change only one thing is good testing. (a) False (b) True
19. 19.🧪 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 A (b) design B (c) design C
20. 20.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
21. 21.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to record every result is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins
25. 25.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) use a new load each time (d) repeat each test
26. 26.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
29. 29.🧪 A paper bridge was tested three times. It held 330 g, 310 g and 290 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to guess, do not measure is poor testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 240 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to test it only once is good testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 370 g, 350 g and 330 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
35. 35.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) measure the same way (d) use the same load
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A
37. 37.🧪 Is it good or poor testing to skip writing results? (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.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) use the same load (d) repeat each test
40. 40.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 130 g. What is the mean (average) load it held, in grams?

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