Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 483 · 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 repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
2. 2.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.True or false: to hide a failed test is poor testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
8. 8.True or false: to change only one thing is good testing. (a) False (b) True
9. 9.🔢 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
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
11. 11.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) build it with straws
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 230 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
16. 16.True or false: to test it only once is poor testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 180 g, 120 g and 150 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 380 g, 280 g and 180 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
20. 20.🧪 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 strongest? (a) design C (b) design B (c) design A
21. 21.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) use the same load (d) change only one thing
23. 23.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 130 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) change only one thing (d) repeat each test
26. 26.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design C (b) design A (c) design B
28. 28.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 150 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
30. 30.🧪 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
31. 31.🧪 A paper bridge was tested three times. It held 290 g, 270 g and 280 g. What is the mean (average) load it held, in grams?
32. 32.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
33. 33.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) change lots at once (d) hide a failed test
35. 35.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) skip writing results (d) repeat each test
37. 37.True or false: to record every result is poor testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
39. 39.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 230 g. What is the mean (average) load it held, in grams?

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