Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 458 · 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.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
3. 3.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
4. 4.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) test it only once (d) use a new load each time
5. 5.🧪 A paper bridge was tested three times. It held 400 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 60 g and 150 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to repeat each test is good testing. (a) False (b) True
8. 8.True or false: to measure the same way is good testing. (a) True (b) False
9. 9.True or false: to record every result is good testing. (a) False (b) True
10. 10.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 310 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 140 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
13. 13.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
14. 14.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
15. 15.🧪 A paper bridge was tested three times. It held 390 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design A (b) design B (c) design C
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
19. 19.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
21. 21.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) skip writing results (d) record every result
22. 22.True or false: to repeat each test is poor testing. (a) True (b) False
23. 23.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) measure the same way (d) repeat each test
25. 25.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) use the same load (d) change lots at once
27. 27.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
28. 28.🔢 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
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.True or false: to hide a failed test is poor testing. (a) False (b) True
31. 31.True or false: to record every result is poor testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design C (b) design A (c) design B
33. 33.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
34. 34.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
35. 35.True or false: to change only one thing is poor testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
37. 37.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
38. 38.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
40. 40.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing

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