Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 127 · 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 160 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) guess, do not measure (d) measure the same way
3. 3.True or false: to hide a failed test is poor testing. (a) True (b) False
4. 4.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
5. 5.True or false: to change lots at once is good testing. (a) True (b) False
6. 6.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
7. 7.True or false: to change lots at once is poor testing. (a) True (b) False
8. 8.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
9. 9.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
10. 10.🧪 A paper bridge was tested three times. It held 270 g, 140 g and 100 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A
13. 13.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) test it only once (d) repeat each test
14. 14.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to test it only once is poor testing. (a) False (b) True
16. 16.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
17. 17.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
19. 19.True or false: to guess, do not measure is good testing. (a) False (b) True
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
21. 21.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
22. 22.True or false: to repeat each test is poor testing. (a) True (b) False
23. 23.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) use a new load each time
25. 25.🧪 A paper bridge was tested three times. It held 330 g, 160 g and 200 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 420 g, 290 g and 280 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
28. 28.True or false: to measure the same way is good testing. (a) False (b) True
29. 29.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
30. 30.True or false: to test it only once is good testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
32. 32.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
33. 33.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) strengthen the weak part
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
35. 35.True or false: to skip writing results is good testing. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) measure the same way
37. 37.True or false: to change only one thing is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 360 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) use a new load each time
40. 40.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing

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