Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 740 · 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 240 g, 170 g and 100 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to hide a failed test is good testing. (a) True (b) False
3. 3.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🧪 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
6. 6.🧪 A paper bridge was tested three times. It held 310 g, 140 g and 210 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to change lots at once is good testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
9. 9.🧪 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
10. 10.True or false: to record every result is poor testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) change only one thing (d) record every result
12. 12.True or false: to test it only once is good testing. (a) True (b) False
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
14. 14.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) measure the same way (d) use the same load
15. 15.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
16. 16.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) use a new load each time (d) guess, do not measure
18. 18.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 270 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 230 g. What is the mean (average) load it held, in grams?
20. 20.🧪 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
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) build it with straws
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 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, 280 g and 200 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) measure the same way (d) repeat each test
26. 26.True or false: to change only one thing is good testing. (a) False (b) True
27. 27.True or false: to repeat each test is poor testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
29. 29.True or false: to measure the same way is poor testing. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) change lots at once (d) measure the same way
31. 31.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
33. 33.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) hide a failed test (d) test it only once
34. 34.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
35. 35.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change only one thing (d) record every result
36. 36.True or false: to guess, do not measure is poor testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 350 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
40. 40.True or false: to guess, do not measure is good testing. (a) False (b) True

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