Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 625 · 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 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
5. 5.True or false: to hide a failed test is poor testing. (a) False (b) True
6. 6.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
8. 8.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
10. 10.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 270 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to hide a failed test is good testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
13. 13.🧪 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 strongest? (a) design B (b) design A (c) design C
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
16. 16.True or false: to change lots at once is poor testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 210 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to record every result is good testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
20. 20.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
21. 21.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
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.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the weakest? (a) design C (b) design A (c) design B
24. 24.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) record every result (d) hide a failed test
25. 25.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) change only one thing (d) record every result
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 400 g. What is the mean (average) load it held, in grams?
29. 29.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
30. 30.🧪 A paper bridge was tested three times. It held 440 g, 280 g and 330 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 360 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) skip writing results (d) repeat each test
33. 33.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
34. 34.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
35. 35.True or false: to skip writing results is good testing. (a) True (b) False
36. 36.True or false: to test it only once is good testing. (a) True (b) False
37. 37.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 300 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
39. 39.True or false: to measure the same way is good testing. (a) True (b) False
40. 40.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster

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