Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 695 · 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.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) strengthen the weak part
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 160 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to skip writing results is good testing. (a) False (b) True
7. 7.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
8. 8.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use the same load (d) change lots at once
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change only one thing (d) record every result
14. 14.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 240 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
16. 16.True or false: to record every result is poor testing. (a) True (b) False
17. 17.True or false: to change lots at once is poor testing. (a) True (b) False
18. 18.True or false: to test it only once is good testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) sketch three ideas
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
21. 21.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
22. 22.True or false: to hide a failed test is good testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) measure the same way (d) skip writing results
24. 24.🧪 A paper bridge was tested three times. It held 250 g, 230 g and 210 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to change lots at once is good testing. (a) False (b) True
26. 26.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) repeat each test (d) use the same load
29. 29.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
30. 30.True or false: to hide a failed test is poor testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
32. 32.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
34. 34.True or false: to test it only once is poor testing. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) guess, do not measure (d) repeat each test
36. 36.True or false: to change only one thing is good testing. (a) True (b) False
37. 37.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
38. 38.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
39. 39.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 340 g, 300 g and 260 g. What is the mean (average) load it held, in grams?

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