Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 818 · 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 260 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
2. 2.🧪 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
3. 3.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
4. 4.True or false: to repeat each test is good testing. (a) False (b) True
5. 5.True or false: to hide a failed test is poor testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 350 g, 150 g and 250 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to guess, do not measure is good testing. (a) True (b) False
8. 8.🧪 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 strongest? (a) design A (b) design C (c) design B
9. 9.True or false: to test it only once is poor testing. (a) False (b) True
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
11. 11.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
16. 16.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to guess, do not measure is poor testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
20. 20.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) load it with coins
21. 21.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) hide a failed test (d) use a new load each time
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
24. 24.🧪 A paper bridge was tested three times. It held 440 g, 340 g and 240 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to use a new load each time is poor testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the weakest? (a) design C (b) design A (c) design B
28. 28.🧪 A paper bridge was tested three times. It held 370 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
30. 30.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) guess, do not measure (d) repeat each test
31. 31.🧪 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 C (c) design A
32. 32.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 220 g, 160 g and 220 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to measure the same way is good testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
37. 37.True or false: to skip writing results is good testing. (a) True (b) False
38. 38.True or false: to use the same load is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B

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