Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 435 · 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.🧪 A paper bridge was tested three times. It held 230 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use the same load (d) skip writing results
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
4. 4.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 340 g. What is the mean (average) load it held, in grams?
5. 5.🧪 A paper bridge was tested three times. It held 360 g, 300 g and 390 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) guess, do not measure (d) use the same load
7. 7.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 180 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
9. 9.True or false: to skip writing results is poor testing. (a) True (b) False
10. 10.True or false: to change lots at once is good testing. (a) True (b) False
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
12. 12.True or false: to use the same load is poor testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
15. 15.True or false: to record every result is poor testing. (a) False (b) True
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design A (c) design C
17. 17.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
18. 18.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
19. 19.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
20. 20.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) guess, do not measure (d) hide a failed test
22. 22.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
23. 23.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) change lots at once
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) hide a failed test
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
26. 26.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
27. 27.True or false: to test it only once is good testing. (a) True (b) False
28. 28.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
31. 31.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to use the same load is good testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
35. 35.True or false: to hide a failed test is good testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 240 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to use a new load each time is good testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
39. 39.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
40. 40.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing

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