Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 663 · 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 change only one thing is good testing. (a) False (b) True
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
3. 3.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
4. 4.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) change only one thing (d) use a new load each time
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) use a new load each time (d) guess, do not measure
6. 6.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) guess, do not measure
7. 7.True or false: to repeat each test is good testing. (a) True (b) False
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
9. 9.True or false: to measure the same way is poor testing. (a) True (b) False
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) record every result (d) guess, do not measure
12. 12.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) guess, do not measure (d) hide a failed test
13. 13.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
14. 14.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) repeat each test (d) record every result
15. 15.True or false: to measure the same way is good testing. (a) True (b) False
16. 16.🧪 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
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🧪 A paper bridge was tested three times. It held 320 g, 270 g and 310 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
20. 20.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
21. 21.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
22. 22.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
23. 23.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) repeat each test (d) use the same load
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 150 g. What is the mean (average) load it held, in grams?
25. 25.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
26. 26.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 110 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to test it only once is poor testing. (a) True (b) False
28. 28.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design B (b) design A (c) design C
30. 30.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
31. 31.True or false: to change lots at once is good testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
33. 33.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) record every result (d) use the same load
34. 34.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 170 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 280 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C

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