Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 764 · 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.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) record every result (d) use the same load
2. 2.🔢 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
3. 3.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 370 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) use a new load each time (d) change lots at once
6. 6.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
7. 7.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
9. 9.True or false: to change only one thing is good testing. (a) False (b) True
10. 10.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
11. 11.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
12. 12.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
13. 13.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
14. 14.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
15. 15.True or false: to skip writing results is good testing. (a) False (b) True
16. 16.🧪 A paper bridge was tested three times. It held 330 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 380 g, 320 g and 320 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to measure the same way is poor testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) use a new load each time (d) repeat each test
21. 21.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design A (b) design C (c) design B
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
26. 26.True or false: to test it only once is poor testing. (a) True (b) False
27. 27.🧪 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 C (b) design A (c) design B
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
29. 29.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) record every result (d) test it only once
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) hide a failed test (d) repeat each test
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) hide a failed test (d) use a new load each time
35. 35.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
38. 38.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 420 g, 330 g and 240 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to hide a failed test is good testing. (a) False (b) True

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