Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 545 · 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.True or false: to use the same load is good testing. (a) True (b) False
2. 2.🧪 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
3. 3.True or false: to measure the same way is good testing. (a) False (b) True
4. 4.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
5. 5.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
6. 6.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
8. 8.🧪 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 A (b) design C (c) design B
9. 9.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
15. 15.🧪 A paper bridge was tested three times. It held 160 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
16. 16.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
17. 17.True or false: to use the same load is poor testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
19. 19.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) record every result (d) use the same load
20. 20.True or false: to repeat each test is good testing. (a) True (b) False
21. 21.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
22. 22.True or false: to skip writing results is good testing. (a) True (b) False
23. 23.True or false: to repeat each test is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
25. 25.True or false: to guess, do not measure is poor testing. (a) True (b) False
26. 26.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
27. 27.True or false: to record every result is poor testing. (a) False (b) True
28. 28.🔢 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
29. 29.True or false: to change lots at once is good testing. (a) False (b) True
30. 30.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
31. 31.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
32. 32.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
34. 34.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
35. 35.True or false: to hide a failed test is poor testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
37. 37.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
39. 39.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change only one thing (d) use the same load
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) sketch three ideas

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