Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 637 · 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.True or false: to measure the same way is good testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
3. 3.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
4. 4.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) test it only once (d) use the same load
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
6. 6.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 210 g. What is the mean (average) load it held, in grams?
7. 7.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
8. 8.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
9. 9.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
10. 10.True or false: to guess, do not measure is good testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change only one thing (d) change lots at once
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
13. 13.True or false: to record every result is good testing. (a) True (b) False
14. 14.🧪 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
15. 15.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
19. 19.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) measure the same way (d) change only one thing
20. 20.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
21. 21.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
23. 23.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) skip writing results (d) use the same load
26. 26.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 230 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
28. 28.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) change lots at once
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
33. 33.True or false: to repeat each test is good testing. (a) True (b) False
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.True or false: to test it only once is poor testing. (a) False (b) True
36. 36.🔢 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
37. 37.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
38. 38.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
39. 39.True or false: to use a new load each time is poor testing. (a) False (b) True
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B

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