Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 785 · 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 130 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
4. 4.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
7. 7.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
9. 9.True or false: to record every result is good testing. (a) False (b) True
10. 10.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) change lots at once
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) test it only once (d) skip writing results
16. 16.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
19. 19.True or false: to change only one thing is poor testing. (a) False (b) True
20. 20.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) change lots at once (d) change only one thing
22. 22.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 250 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) sketch three ideas
26. 26.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
27. 27.🧪 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 strongest? (a) design A (b) design B (c) design C
28. 28.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) use a new load each time (d) hide a failed test
31. 31.True or false: to record every result is poor testing. (a) False (b) True
32. 32.True or false: to guess, do not measure is good testing. (a) True (b) False
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🧪 A paper bridge was tested three times. It held 270 g, 190 g and 110 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 250 g, 180 g and 320 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to skip writing results is poor testing. (a) False (b) True
37. 37.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
38. 38.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
40. 40.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) change lots at once (d) test it only once

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