Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 272 · 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.🧪 A paper bridge was tested three times. It held 410 g, 300 g and 220 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) repeat each test (d) skip writing results
3. 3.True or false: to change lots at once is good testing. (a) True (b) False
4. 4.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
5. 5.🧪 A paper bridge was tested three times. It held 340 g, 280 g and 370 g. What is the mean (average) load it held, in grams?
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) read the challenge rules
7. 7.🧪 A paper bridge was tested three times. It held 180 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
9. 9.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
10. 10.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
11. 11.True or false: to record every result is poor testing. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) change only one thing (d) measure the same way
13. 13.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
14. 14.True or false: to change lots at once is poor testing. (a) False (b) True
15. 15.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) change only one thing (d) guess, do not measure
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
19. 19.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
20. 20.True or false: to repeat each test is good testing. (a) False (b) True
21. 21.🧪 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
22. 22.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
23. 23.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) record every result (d) repeat each test
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) hide a failed test (d) test it only once
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the strongest? (a) design C (b) design A (c) design B
26. 26.🧪 A paper bridge was tested three times. It held 310 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) hide a failed test (d) record every result
29. 29.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
30. 30.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
31. 31.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
32. 32.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design C (b) design A (c) design B
36. 36.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
37. 37.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 370 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
39. 39.True or false: to skip writing results is poor testing. (a) True (b) False
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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