Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 611 · 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.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
2. 2.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
3. 3.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
4. 4.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
5. 5.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
6. 6.True or false: to record every result is poor testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
8. 8.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
9. 9.True or false: to guess, do not measure is poor testing. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) use the same load (d) test it only once
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
12. 12.True or false: to use the same load is poor testing. (a) True (b) False
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.🧪 A paper bridge was tested three times. It held 400 g, 270 g and 320 g. What is the mean (average) load it held, in grams?
15. 15.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 390 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 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.True or false: to use the same load is good testing. (a) True (b) False
18. 18.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 350 g. What is the mean (average) load it held, in grams?
19. 19.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
20. 20.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
21. 21.True or false: to hide a failed test is good testing. (a) False (b) True
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
23. 23.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
24. 24.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) use a new load each time (d) change only one thing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
28. 28.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
29. 29.True or false: to measure the same way is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) use a new load each time (d) repeat each test
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design B (b) design A (c) design C
32. 32.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) measure the same way (d) test it only once
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 150 g. What is the mean (average) load it held, in grams?
38. 38.🔢 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
39. 39.True or false: to change only one thing is poor testing. (a) True (b) False
40. 40.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?

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