Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 783 · 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.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
3. 3.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
4. 4.True or false: to use the same load is poor testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) change lots at once (d) hide a failed test
8. 8.True or false: to repeat each test is good testing. (a) True (b) False
9. 9.True or false: to hide a failed test is poor testing. (a) False (b) True
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
11. 11.🧪 A paper bridge was tested three times. It held 250 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.True or false: to measure the same way is poor testing. (a) True (b) False
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
15. 15.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
19. 19.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design A (b) design C (c) design B
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
26. 26.True or false: to use the same load is good testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 440 g, 330 g and 280 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 310 g, 280 g and 310 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to change only one thing is poor testing. (a) False (b) True
30. 30.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to test it only once is poor testing. (a) True (b) False
33. 33.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change only one thing (d) record every result
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
36. 36.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) change lots at once (d) hide a failed test
38. 38.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
39. 39.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) repeat each test (d) use the same load
40. 40.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing

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