Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 236 · 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 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design B (b) design C (c) design A
2. 2.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
4. 4.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
5. 5.🧪 A paper bridge was tested three times. It held 230 g, 50 g and 170 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 270 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 310 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
10. 10.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) measure the same way (d) repeat each test
13. 13.🧪 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 C (b) design A (c) design B
14. 14.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) change only one thing (d) repeat each test
15. 15.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 340 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 120 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) guess, do not measure (d) record every result
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design C (c) design B
19. 19.True or false: to guess, do not measure is poor testing. (a) False (b) True
20. 20.🧪 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 weakest? (a) design C (b) design B (c) design A
21. 21.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) strengthen the weak part
23. 23.True or false: to guess, do not measure is good testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
26. 26.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) strengthen the weak part
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
29. 29.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
30. 30.True or false: to repeat each test is good testing. (a) False (b) True
31. 31.True or false: to use a new load each time is poor testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
33. 33.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) hide a failed test (d) change only one thing
34. 34.True or false: to measure the same way is poor testing. (a) True (b) False
35. 35.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
38. 38.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
39. 39.True or false: to change lots at once is poor testing. (a) True (b) False
40. 40.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?

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