Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 706 · 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 test it only once? (a) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) change lots at once (d) skip writing results
3. 3.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) use a new load each time
5. 5.True or false: to guess, do not measure is good testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
7. 7.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
8. 8.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
9. 9.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) hide a failed test (d) repeat each test
11. 11.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.🧪 A paper bridge was tested three times. It held 230 g, 200 g and 170 g. What is the mean (average) load it held, in grams?
13. 13.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
14. 14.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
15. 15.🧪 A paper bridge was tested three times. It held 200 g, 70 g and 240 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
17. 17.True or false: to change only one thing is poor testing. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) repeat each test (d) record every result
19. 19.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) repeat each test (d) test it only once
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
21. 21.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
23. 23.True or false: to hide a failed test is good testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 280 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 200 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
26. 26.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
27. 27.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
29. 29.True or false: to change lots at once is poor testing. (a) True (b) False
30. 30.True or false: to guess, do not measure is poor testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) skip writing results (d) measure the same way
32. 32.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
34. 34.🧪 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 strongest? (a) design A (b) design B (c) design C
35. 35.🧪 A paper bridge was tested three times. It held 240 g, 70 g and 200 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
37. 37.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) change only one thing (d) measure the same way
38. 38.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) hide a failed test (d) guess, do not measure
39. 39.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) choose and draw one

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