Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 138 · 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.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
2. 2.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change lots at once (d) record every result
4. 4.🧪 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 A (b) design B (c) design C
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) measure the same way (d) record every result
6. 6.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
7. 7.True or false: to hide a failed test is good testing. (a) True (b) False
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
10. 10.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 200 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
12. 12.True or false: to use the same load is poor testing. (a) True (b) False
13. 13.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
14. 14.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
15. 15.True or false: to record every result is poor testing. (a) False (b) True
16. 16.🔢 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) strengthen the weak part
17. 17.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) skip writing results (d) change lots at once
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
20. 20.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
22. 22.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
23. 23.True or false: to measure the same way is poor testing. (a) False (b) True
24. 24.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design C (b) design A (c) design B
26. 26.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) hide a failed test (d) guess, do not measure
27. 27.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) change lots at once (d) record every result
29. 29.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 190 g, 110 g and 150 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to test it only once is poor testing. (a) False (b) True
32. 32.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
33. 33.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) use the same load (d) repeat each test
35. 35.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) measure the same way (d) record every result
36. 36.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 140 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to change only one thing is good testing. (a) True (b) False
38. 38.True or false: to change lots at once is good testing. (a) False (b) True
39. 39.🔢 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
40. 40.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) use the same load (d) change lots at once

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