Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 257 · 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.🧪 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 strongest? (a) design B (b) design C (c) design A
2. 2.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) read the challenge rules
3. 3.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
4. 4.True or false: to test it only once is good testing. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design B (b) design C (c) design A
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) record every result (d) change lots at once
7. 7.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
8. 8.🧪 A paper bridge was tested three times. It held 310 g, 280 g and 340 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
10. 10.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
11. 11.True or false: to use the same load is good testing. (a) False (b) True
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design A (b) design C (c) design B
13. 13.True or false: to skip writing results is poor testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) guess, do not measure (d) test it only once
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use a new load each time (d) use the same load
18. 18.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design B (b) design A (c) design C
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
21. 21.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
22. 22.True or false: to test it only once is poor testing. (a) True (b) False
23. 23.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
24. 24.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
26. 26.🧪 A paper bridge was tested three times. It held 410 g, 310 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
28. 28.True or false: to change only one thing is poor testing. (a) True (b) False
29. 29.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
30. 30.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) record every result (d) guess, do not measure
31. 31.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 300 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) skip writing results (d) use the same load
34. 34.🔢 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
35. 35.True or false: to guess, do not measure is good testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 400 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
38. 38.True or false: to skip writing results is good testing. (a) False (b) True
39. 39.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 260 g. What is the mean (average) load it held, in grams?

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