Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 49 · 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 avoid testing (c) to decorate a room (d) to test ideas cheaply
2. 2.🧪 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 C (c) design B
3. 3.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
4. 4.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
5. 5.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
6. 6.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
8. 8.True or false: to hide a failed test is poor testing. (a) False (b) True
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 130 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
10. 10.True or false: to use a new load each time is poor testing. (a) True (b) False
11. 11.🧪 A paper bridge was tested three times. It held 380 g, 340 g and 300 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
13. 13.True or false: to record every result is good testing. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) change lots at once
15. 15.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
16. 16.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 110 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to hide a failed test is good testing. (a) True (b) False
18. 18.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
19. 19.🧪 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 strongest? (a) design B (b) design A (c) design C
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) record every result (d) guess, do not measure
21. 21.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) guess, do not measure
22. 22.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
23. 23.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
24. 24.True or false: to test it only once is poor testing. (a) True (b) False
25. 25.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
26. 26.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
28. 28.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
29. 29.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) build it with straws
30. 30.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
31. 31.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
33. 33.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change lots at once (d) repeat each test
34. 34.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) test it only once (d) hide a failed test
37. 37.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 270 g, 90 g and 150 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 80 g and 160 g. What is the mean (average) load it held, in grams?

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