Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 126 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design B (b) design C (c) design A
2. 2.True or false: to use a new load each time is good testing. (a) False (b) True
3. 3.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
4. 4.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
5. 5.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
7. 7.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
8. 8.True or false: to test it only once is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
10. 10.True or false: to use the same load is poor testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) repeat each test (d) change lots at once
12. 12.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change only one thing (d) use the same load
13. 13.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
15. 15.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) hide a failed test (d) use the same load
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
18. 18.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 170 g. What is the mean (average) load it held, in grams?
19. 19.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
20. 20.True or false: to guess, do not measure is good testing. (a) True (b) False
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
22. 22.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 150 g. What is the mean (average) load it held, in grams?
23. 23.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) load it with coins
24. 24.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change only one thing (d) measure the same way
25. 25.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 130 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) hide a failed test (d) use a new load each time
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
28. 28.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
29. 29.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
30. 30.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
31. 31.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
32. 32.True or false: to change lots at once is good testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
35. 35.True or false: to measure the same way is good testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design C (c) design A
37. 37.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) guess, do not measure (d) record every result
38. 38.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) change only one thing (d) guess, do not measure
39. 39.True or false: to change lots at once is poor testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) build it with straws

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