Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 357 · 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.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change lots at once (d) guess, do not measure
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
5. 5.True or false: to use a new load each time is good testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design C (b) design A (c) design B
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) use a new load each time (d) use the same load
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
10. 10.True or false: to hide a failed test is poor testing. (a) True (b) False
11. 11.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
12. 12.True or false: to guess, do not measure is good testing. (a) True (b) False
13. 13.True or false: to guess, do not measure is poor testing. (a) True (b) False
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) choose and draw one
15. 15.🧪 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
16. 16.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
18. 18.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) build it with straws
19. 19.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
21. 21.True or false: to measure the same way is good testing. (a) True (b) False
22. 22.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
24. 24.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
25. 25.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
27. 27.True or false: to test it only once is good testing. (a) False (b) True
28. 28.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
30. 30.True or false: to change only one thing is poor testing. (a) False (b) True
31. 31.🧪 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
32. 32.True or false: to use the same load is good testing. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) skip writing results
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
35. 35.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to measure the same way is poor testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C

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