Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 470 · 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, 250 g and 260 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) change only one thing (d) measure the same way
4. 4.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
8. 8.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
9. 9.True or false: to test it only once is good testing. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) guess, do not measure
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
12. 12.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 370 g. What is the mean (average) load it held, in grams?
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
14. 14.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
15. 15.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
16. 16.True or false: to measure the same way is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
18. 18.True or false: to record every result is good testing. (a) False (b) True
19. 19.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
20. 20.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 180 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
22. 22.True or false: to change only one thing is good testing. (a) False (b) True
23. 23.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
24. 24.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
25. 25.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
26. 26.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
27. 27.True or false: to record every result is poor testing. (a) False (b) True
28. 28.True or false: to use the same load is poor testing. (a) True (b) False
29. 29.True or false: to change lots at once is poor testing. (a) True (b) False
30. 30.True or false: to guess, do not measure is poor testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 260 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change lots at once (d) use the same load
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) record every result (d) measure the same way
34. 34.True or false: to use a new load each time is good testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) use the same load (d) test it only once
38. 38.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) test it only once (d) guess, do not measure
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B

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