Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 107 · 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 230 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) record every result (d) use a new load each time
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
4. 4.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
5. 5.True or false: to repeat each test is good testing. (a) True (b) False
6. 6.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
7. 7.True or false: to use the same load is good testing. (a) False (b) True
8. 8.True or false: to skip writing results is poor testing. (a) True (b) False
9. 9.🧪 A paper bridge was tested three times. It held 290 g, 130 g and 240 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) use the same load (d) repeat each test
11. 11.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
12. 12.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) change lots at once
13. 13.True or false: to change lots at once is good testing. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) use a new load each time (d) use the same load
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
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 measure the same way? (a) good testing (b) poor testing
18. 18.True or false: to measure the same way is poor testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 390 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) skip writing results (d) repeat each test
21. 21.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 400 g, 280 g and 370 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 140 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 hide a failed test is good testing. (a) False (b) True
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) use the same load (d) record every result
27. 27.True or false: to skip writing results is good testing. (a) True (b) False
28. 28.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) hide a failed test (d) test it only once
30. 30.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 300 g. What is the mean (average) load it held, in grams?
31. 31.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
32. 32.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
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.🧪 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 weakest? (a) design C (b) design A (c) design B
35. 35.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) measure the same way
36. 36.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
37. 37.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
38. 38.🧪 A paper bridge was tested three times. It held 320 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?

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