Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 841 · 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 do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
2. 2.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
4. 4.True or false: to use the same load is poor testing. (a) False (b) True
5. 5.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
6. 6.🧪 A paper bridge was tested three times. It held 390 g, 290 g and 220 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 230 g. What is the mean (average) load it held, in grams?
8. 8.True or false: to skip writing results is poor testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
11. 11.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 350 g. What is the mean (average) load it held, in grams?
12. 12.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
13. 13.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
14. 14.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) record every result
15. 15.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
16. 16.True or false: to repeat each test is poor testing. (a) False (b) True
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
19. 19.True or false: to record every result is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) guess, do not measure (d) repeat each test
22. 22.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 190 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design C (b) design B (c) design A
24. 24.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design A (b) design C (c) design B
28. 28.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
29. 29.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
30. 30.True or false: to test it only once is poor testing. (a) False (b) True
31. 31.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
32. 32.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
34. 34.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
35. 35.True or false: to guess, do not measure is good testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
37. 37.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the strongest? (a) design B (b) design C (c) design A
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design A (c) design C

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