Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 773 · 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 300 g, 210 g and 120 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) load it with coins
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) hide a failed test (d) change only one thing
4. 4.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) test it only once (d) record every result
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 220 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
8. 8.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
10. 10.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
11. 11.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) strengthen the weak part
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
13. 13.True or false: to guess, do not measure is good testing. (a) False (b) True
14. 14.True or false: to guess, do not measure is poor testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
17. 17.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) repeat each test (d) use the same load
18. 18.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
20. 20.True or false: to repeat each test is good testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) test it only once (d) guess, do not measure
22. 22.True or false: to skip writing results is good testing. (a) False (b) True
23. 23.True or false: to hide a failed test is poor testing. (a) False (b) True
24. 24.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) guess, do not measure (d) test it only once
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🔢 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
28. 28.True or false: to test it only once is good testing. (a) False (b) True
29. 29.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
31. 31.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
32. 32.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
34. 34.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
35. 35.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
36. 36.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 110 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change only one thing (d) use the same load
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws

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