Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 397 · 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 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) load it with coins
3. 3.True or false: to use a new load each time is good testing. (a) False (b) True
4. 4.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
5. 5.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) change only one thing (d) hide a failed test
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) strengthen the weak part
7. 7.True or false: to hide a failed test is poor testing. (a) True (b) False
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) load it with coins
9. 9.🧪 A paper bridge was tested three times. It held 390 g, 260 g and 370 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
11. 11.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) hide a failed test
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) record every result (d) repeat each test
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 170 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
19. 19.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
20. 20.🔍 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
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
22. 22.True or false: to skip writing results is poor testing. (a) False (b) True
23. 23.🧪 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 weakest? (a) design B (b) design C (c) design A
24. 24.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
25. 25.🧪 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 A (b) design C (c) design B
26. 26.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
28. 28.True or false: to change only one thing is poor testing. (a) True (b) False
29. 29.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
30. 30.True or false: to skip writing results is good testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
32. 32.True or false: to use the same load is poor testing. (a) False (b) True
33. 33.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
34. 34.🔢 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
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design C (b) design A (c) design B
36. 36.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 240 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 190 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to change only one thing is good testing. (a) True (b) False
40. 40.🧪 A paper bridge was tested three times. It held 290 g, 230 g and 200 g. What is the mean (average) load it held, in grams?

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