Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 763 · 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.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
2. 2.True or false: to use a new load each time is good testing. (a) False (b) True
3. 3.True or false: to change lots at once is poor testing. (a) False (b) True
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
5. 5.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 260 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.True or false: to guess, do not measure is poor testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.True or false: to test it only once is poor testing. (a) True (b) False
14. 14.🧪 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 B (b) design A (c) design C
15. 15.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) repeat each test
16. 16.True or false: to change lots at once is good testing. (a) False (b) True
17. 17.True or false: to skip writing results is good testing. (a) True (b) False
18. 18.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 390 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to repeat each test is poor testing. (a) False (b) True
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
21. 21.🧪 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
22. 22.🧪 A paper bridge was tested three times. It held 340 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change only one thing (d) hide a failed test
24. 24.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) use the same load (d) measure the same way
25. 25.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 220 g. What is the mean (average) load it held, in grams?
26. 26.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
27. 27.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
28. 28.True or false: to change only one thing is good testing. (a) True (b) False
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
30. 30.True or false: to measure the same way is good testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) guess, do not measure (d) use a new load each time
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) guess, do not measure
33. 33.True or false: to skip writing results is poor testing. (a) False (b) True
34. 34.True or false: to measure the same way is poor testing. (a) True (b) False
35. 35.True or false: to change only one thing is poor testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 160 g and 250 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) record every result (d) measure the same way
40. 40.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy

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