Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 273 · 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.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) record every result (d) repeat each test
2. 2.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
3. 3.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 320 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to record every result is poor testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
6. 6.True or false: to guess, do not measure is good testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 290 g, 270 g and 280 g. What is the mean (average) load it held, in grams?
8. 8.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
9. 9.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) change lots at once (d) hide a failed test
11. 11.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) guess, do not measure
13. 13.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
14. 14.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 400 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
16. 16.🧪 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
17. 17.True or false: to change lots at once is poor testing. (a) False (b) True
18. 18.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
19. 19.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 170 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) use the same load (d) measure the same way
21. 21.True or false: to repeat each test is good testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one
23. 23.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) skip writing results (d) record every result
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use a new load each time (d) change only one thing
25. 25.True or false: to skip writing results is poor testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) change only one thing (d) record every result
28. 28.True or false: to guess, do not measure is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 280 g. What is the mean (average) load it held, in grams?
30. 30.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
32. 32.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 110 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to record every result is good testing. (a) False (b) True
39. 39.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C

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