Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 679 · 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.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
2. 2.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
4. 4.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) change only one thing (d) guess, do not measure
5. 5.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) repeat each test (d) record every result
7. 7.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) load it with coins
8. 8.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design A (b) design C (c) design B
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design C (b) design A (c) design B
15. 15.True or false: to measure the same way is poor testing. (a) False (b) True
16. 16.🧪 A paper bridge was tested three times. It held 280 g, 280 g and 280 g. What is the mean (average) load it held, in grams?
17. 17.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
18. 18.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
19. 19.True or false: to hide a failed test is good testing. (a) False (b) True
20. 20.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
22. 22.True or false: to repeat each test is good testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 250 g, 190 g and 250 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
25. 25.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 250 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to use the same load is poor testing. (a) True (b) False
27. 27.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
28. 28.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change lots at once (d) skip writing results
30. 30.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) use the same load (d) change lots at once
31. 31.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
32. 32.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) repeat each test
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) repeat each test (d) change only one thing
34. 34.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) guess, do not measure (d) record every result
35. 35.True or false: to hide a failed test is poor testing. (a) True (b) False
36. 36.True or false: to record every result is poor testing. (a) False (b) True
37. 37.True or false: to change only one thing is poor testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.True or false: to repeat each test is poor testing. (a) True (b) False

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