Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 416 · 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.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
2. 2.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
3. 3.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
5. 5.True or false: to measure the same way is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) load it with coins
7. 7.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
8. 8.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
10. 10.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 270 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
12. 12.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) hide a failed test (d) skip writing results
13. 13.True or false: to use the same load is poor testing. (a) True (b) False
14. 14.True or false: to use the same load is good testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change only one thing (d) use a new load each time
16. 16.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) guess, do not measure (d) measure the same way
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design B (b) design A (c) design C
18. 18.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
19. 19.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
20. 20.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
21. 21.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) use the same load (d) record every result
23. 23.True or false: to hide a failed test is poor testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.True or false: to change lots at once is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) change lots at once (d) hide a failed test
28. 28.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
29. 29.True or false: to hide a failed test is good testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
31. 31.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) test it only once
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
38. 38.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) sketch three ideas
39. 39.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 170 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing

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