Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 650 · 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.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
2. 2.🧪 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 weakest? (a) design A (b) design B (c) design C
3. 3.True or false: to hide a failed test is poor testing. (a) True (b) False
4. 4.True or false: to guess, do not measure is poor testing. (a) True (b) False
5. 5.True or false: to repeat each test is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) guess, do not measure (d) repeat each test
8. 8.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
9. 9.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
10. 10.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) guess, do not measure (d) use the same load
11. 11.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design B (b) design C (c) design A
15. 15.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) skip writing results (d) use the same load
17. 17.🧪 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
18. 18.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change only one thing (d) hide a failed test
20. 20.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
23. 23.🔢 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) load it with coins
24. 24.True or false: to record every result is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
26. 26.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
27. 27.True or false: to use a new load each time is poor testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
29. 29.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
30. 30.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) test it only once
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
33. 33.🧪 A paper bridge was tested three times. It held 160 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
34. 34.🔢 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
35. 35.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) hide a failed test (d) repeat each test
36. 36.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design A (b) design C (c) design B
38. 38.True or false: to change lots at once is good testing. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) guess, do not measure (d) record every result
40. 40.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 260 g. What is the mean (average) load it held, in grams?

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