Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 826 · 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.True or false: to measure the same way is good testing. (a) False (b) True
2. 2.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
3. 3.True or false: to guess, do not measure is good testing. (a) True (b) False
4. 4.True or false: to hide a failed test is good testing. (a) True (b) False
5. 5.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
6. 6.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
7. 7.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) test it only once
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) guess, do not measure
9. 9.True or false: to use a new load each time is good testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
11. 11.🧪 A paper bridge was tested three times. It held 330 g, 160 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) build it with straws
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
16. 16.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change lots at once (d) record every result
19. 19.True or false: to repeat each test is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) repeat each test (d) test it only once
23. 23.🧪 A paper bridge was tested three times. It held 310 g, 130 g and 220 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) test it only once (d) use the same load
26. 26.🔢 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
27. 27.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 360 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to record every result is good testing. (a) False (b) True
29. 29.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
30. 30.True or false: to skip writing results is poor testing. (a) False (b) True
31. 31.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
36. 36.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
37. 37.True or false: to change lots at once is good testing. (a) True (b) False
38. 38.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
39. 39.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
40. 40.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 260 g. What is the mean (average) load it held, in grams?

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