Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 215 · 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 skip writing results? (a) good testing (b) poor testing
2. 2.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
3. 3.True or false: to change only one thing is good testing. (a) False (b) True
4. 4.🧪 A paper bridge was tested three times. It held 370 g, 210 g and 350 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
6. 6.True or false: to repeat each test is poor testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 230 g. What is the mean (average) load it held, in grams?
8. 8.True or false: to change lots at once is poor testing. (a) True (b) False
9. 9.True or false: to guess, do not measure is poor testing. (a) False (b) True
10. 10.🧪 A paper bridge was tested three times. It held 250 g, 90 g and 170 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) skip writing results (d) measure the same way
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
13. 13.🧪 A paper bridge was tested three times. It held 260 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
14. 14.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
15. 15.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 150 g, 50 g and 250 g. What is the mean (average) load it held, in grams?
18. 18.🧪 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
19. 19.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) use a new load each time
23. 23.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 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 LAST step? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
26. 26.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 420 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
29. 29.True or false: to use the same load is poor testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to skip writing results is good testing. (a) True (b) False
32. 32.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) build it with straws (d) read the challenge rules
34. 34.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) record every result
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 90 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design B (b) design A (c) design C
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 400 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 260 g, 180 g and 250 g. What is the mean (average) load it held, in grams?

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