Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 344 · 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 guess, do not measure? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
3. 3.True or false: to use a new load each time is poor testing. (a) False (b) True
4. 4.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
6. 6.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
7. 7.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
8. 8.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) measure the same way (d) repeat each test
10. 10.True or false: to guess, do not measure is poor testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) measure the same way
12. 12.True or false: to use the same load is poor testing. (a) True (b) False
13. 13.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
15. 15.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
18. 18.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
19. 19.🧪 A paper bridge was tested three times. It held 430 g, 260 g and 330 g. What is the mean (average) load it held, in grams?
20. 20.True or false: to measure the same way is poor testing. (a) False (b) True
21. 21.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
23. 23.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) record every result (d) measure the same way
24. 24.🧪 A paper bridge was tested three times. It held 310 g, 140 g and 180 g. What is the mean (average) load it held, in grams?
25. 25.🔢 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
26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) record every result (d) measure the same way
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the weakest? (a) design C (b) design A (c) design B
28. 28.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
29. 29.True or false: to test it only once is poor testing. (a) True (b) False
30. 30.True or false: to repeat each test is poor testing. (a) False (b) True
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the strongest? (a) design B (b) design C (c) design A
32. 32.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
33. 33.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
37. 37.🔍 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
38. 38.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 290 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) use the same load (c) test it only once (d) skip writing results
40. 40.🧪 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 strongest? (a) design A (b) design B (c) design C

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