Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 445 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design A (c) design C
3. 3.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
4. 4.True or false: to hide a failed test is good testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) skip writing results (d) use the same load
7. 7.🧪 A paper bridge was tested three times. It held 240 g, 100 g and 170 g. What is the mean (average) load it held, in grams?
8. 8.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
9. 9.True or false: to test it only once is good testing. (a) True (b) False
10. 10.🧪 A paper bridge was tested three times. It held 330 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to guess, do not measure is poor testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) use a new load each time (d) skip writing results
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
15. 15.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
16. 16.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
17. 17.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
18. 18.True or false: to skip writing results is good testing. (a) False (b) True
19. 19.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
20. 20.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) record every result (d) use the same load
22. 22.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 330 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) skip writing results (d) use a new load each time
24. 24.True or false: to measure the same way is poor testing. (a) True (b) False
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 280 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
27. 27.True or false: to use the same load is poor testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) repeat each test
29. 29.True or false: to change lots at once is good testing. (a) False (b) True
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
31. 31.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
32. 32.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
33. 33.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) hide a failed test (d) use a new load each time
34. 34.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
35. 35.True or false: to guess, do not measure is good testing. (a) False (b) True
36. 36.True or false: to skip writing results is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
38. 38.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) change only one thing (d) use the same load
39. 39.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
40. 40.True or false: to repeat each test is poor testing. (a) False (b) True

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids