Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 206 · 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.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
2. 2.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
3. 3.🧪 A paper bridge was tested three times. It held 250 g, 190 g and 130 g. What is the mean (average) load it held, in grams?
4. 4.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the strongest? (a) design A (b) design C (c) design B
6. 6.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
9. 9.True or false: to test it only once is good testing. (a) True (b) False
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
11. 11.True or false: to hide a failed test is good testing. (a) True (b) False
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
14. 14.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) record every result (d) use a new load each time
17. 17.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 400 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to guess, do not measure is poor testing. (a) False (b) True
19. 19.True or false: to skip writing results is good testing. (a) True (b) False
20. 20.🧪 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 weakest? (a) design A (b) design C (c) design B
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) repeat each test (d) change only one thing
22. 22.🧪 A paper bridge was tested three times. It held 180 g, 110 g and 250 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
25. 25.True or false: to measure the same way is poor testing. (a) True (b) False
26. 26.True or false: to record every result is good testing. (a) False (b) True
27. 27.🧪 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 C (c) design A
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
29. 29.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
30. 30.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) test it only once (d) record every result
32. 32.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
33. 33.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 300 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) hide a failed test (d) use a new load each time
35. 35.True or false: to use the same load is poor testing. (a) False (b) True
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design B (b) design A (c) design C
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
38. 38.True or false: to measure the same way is good testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) sketch three ideas
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws

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