Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 542 · 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 lots at once is good testing. (a) True (b) False
2. 2.True or false: to record every result is poor testing. (a) True (b) False
3. 3.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
6. 6.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use a new load each time (d) use the same load
7. 7.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
8. 8.🧪 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 weakest? (a) design B (b) design A (c) design C
9. 9.🧪 A paper bridge was tested three times. It held 420 g, 250 g and 320 g. What is the mean (average) load it held, in grams?
10. 10.🧪 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 strongest? (a) design C (b) design B (c) design A
11. 11.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) choose and draw one
12. 12.True or false: to guess, do not measure is good testing. (a) True (b) False
13. 13.True or false: to change only one thing is poor testing. (a) True (b) False
14. 14.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use a new load each time (d) use the same load
16. 16.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design B (c) design C
19. 19.True or false: to skip writing results is good testing. (a) True (b) False
20. 20.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
21. 21.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
22. 22.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
23. 23.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
26. 26.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 380 g. What is the mean (average) load it held, in grams?
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) repeat each test (d) change only one thing
29. 29.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
30. 30.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) change only one thing (d) hide a failed test
32. 32.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) build it with straws
34. 34.True or false: to hide a failed test is good testing. (a) False (b) True
35. 35.True or false: to change lots at once is poor testing. (a) True (b) False
36. 36.True or false: to use the same load is poor testing. (a) True (b) False
37. 37.True or false: to skip writing results is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to measure the same way is poor testing. (a) True (b) False
40. 40.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?

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