Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 256 · 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.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
2. 2.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
3. 3.🧪 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 B (b) design A (c) design C
4. 4.🧪 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
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
6. 6.True or false: to use the same load is good testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
11. 11.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design C (b) design A (c) design B
13. 13.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) hide a failed test (d) test it only once
14. 14.True or false: to use the same load is poor testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
16. 16.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
17. 17.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) load it with coins (d) strengthen the weak part
18. 18.True or false: to guess, do not measure is good testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) repeat each test (d) record every result
20. 20.True or false: to measure the same way is good testing. (a) False (b) True
21. 21.True or false: to change only one thing is good testing. (a) False (b) True
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
24. 24.True or false: to measure the same way is poor testing. (a) True (b) False
25. 25.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
27. 27.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
28. 28.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
29. 29.True or false: to skip writing results is poor testing. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) record every result (d) guess, do not measure
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
32. 32.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) measure the same way (d) skip writing results
33. 33.🧪 A paper bridge was tested three times. It held 160 g, 80 g and 210 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
35. 35.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 200 g, 180 g and 220 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 90 g and 140 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
39. 39.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
40. 40.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing

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