Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 139 · 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.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) hide a failed test (d) repeat each test
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change lots at once (d) guess, do not measure
3. 3.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
4. 4.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
5. 5.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) guess, do not measure (d) repeat each test
6. 6.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 280 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 260 g, 70 g and 180 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
9. 9.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
14. 14.True or false: to guess, do not measure is good testing. (a) False (b) True
15. 15.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 390 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 250 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.True or false: to use the same load is poor testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change only one thing (d) record every result
20. 20.True or false: to change lots at once is poor testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
22. 22.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
23. 23.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 360 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
26. 26.True or false: to use a new load each time is good testing. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) hide a failed test (d) measure the same way
28. 28.🔢 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) sketch three ideas (d) choose and draw one
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) hide a failed test (d) use the same load
30. 30.True or false: to skip writing results is good testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
32. 32.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design C (b) design B (c) design A
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
37. 37.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) test it only once (d) change only one thing
38. 38.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🧪 A paper bridge was tested three times. It held 400 g, 290 g and 330 g. What is the mean (average) load it held, in grams?

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