Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 104 · 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) change lots at once (b) measure the same way (c) change only one thing (d) record every result
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) test it only once (d) change lots at once
3. 3.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 250 g. What is the mean (average) load it held, in grams?
4. 4.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
5. 5.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
6. 6.🧪 A paper bridge was tested three times. It held 260 g, 70 g and 150 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to use the same load is good testing. (a) False (b) True
8. 8.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
10. 10.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design C (b) design A (c) design B
12. 12.True or false: to record every result is poor testing. (a) True (b) False
13. 13.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
14. 14.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change only one thing (d) test it only once
15. 15.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design A (b) design C (c) design B
17. 17.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) change lots at once (d) hide a failed test
18. 18.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
19. 19.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 190 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) use a new load each time
21. 21.True or false: to change only one thing is good testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
23. 23.True or false: to change lots at once is poor testing. (a) False (b) True
24. 24.True or false: to skip writing results is good testing. (a) False (b) True
25. 25.True or false: to measure the same way is good testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 100 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 180 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) guess, do not measure (d) change only one thing
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
30. 30.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
31. 31.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
32. 32.🔢 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
33. 33.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) change lots at once (d) hide a failed test
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
36. 36.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
38. 38.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
39. 39.True or false: to guess, do not measure is good testing. (a) True (b) False
40. 40.True or false: to repeat each test is good testing. (a) False (b) True

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