Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 993 · 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.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
3. 3.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
4. 4.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) test it only once (d) use the same load
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A
6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
7. 7.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) sketch three ideas
8. 8.True or false: to hide a failed test is good testing. (a) True (b) False
9. 9.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
10. 10.True or false: to use the same load is good testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use the same load (d) guess, do not measure
12. 12.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
15. 15.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
16. 16.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
17. 17.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
18. 18.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) guess, do not measure (d) use a new load each time
19. 19.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
22. 22.🔍 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
23. 23.🔢 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
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
27. 27.True or false: to guess, do not measure is poor testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 190 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
30. 30.🧪 A paper bridge was tested three times. It held 400 g, 230 g and 300 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to hide a failed test is poor testing. (a) False (b) True
32. 32.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.True or false: to change only one thing is poor testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
37. 37.True or false: to repeat each test is good testing. (a) True (b) False
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 280 g, 80 g and 180 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to use the same load is poor testing. (a) True (b) False

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