Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 647 · 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.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
2. 2.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 130 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design B (b) design C (c) design A
4. 4.True or false: to use a new load each time is poor testing. (a) False (b) True
5. 5.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 190 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
7. 7.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) strengthen the weak part
9. 9.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) choose and draw one
11. 11.🧪 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 weakest? (a) design B (b) design A (c) design C
12. 12.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
13. 13.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
14. 14.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
15. 15.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) build it with straws
16. 16.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design B (b) design A (c) design C
18. 18.True or false: to change lots at once is poor testing. (a) False (b) True
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
20. 20.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
22. 22.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) use a new load each time (d) measure the same way
24. 24.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) change only one thing (d) test it only once
25. 25.True or false: to use the same load is poor testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 150 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design B (b) design C (c) design A
28. 28.True or false: to test it only once is good testing. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 180 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) hide a failed test (d) use a new load each time
31. 31.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) skip writing results
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
34. 34.True or false: to change lots at once is good testing. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) skip writing results
36. 36.🧪 A paper bridge was tested three times. It held 300 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) guess, do not measure (d) hide a failed test
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design A (b) design C (c) design B
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design B (b) design A (c) design C
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A

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