Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 683 · 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 avoid testing (d) to test ideas cheaply
2. 2.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) build it with straws
4. 4.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 230 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to use the same load is good testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
7. 7.True or false: to use a new load each time is good testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 160 g, 100 g and 220 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to test it only once is good testing. (a) True (b) False
10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
12. 12.True or false: to change only one thing is good testing. (a) True (b) False
13. 13.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 360 g, 230 g and 310 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
16. 16.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
17. 17.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) strengthen the weak part
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) guess, do not measure
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
22. 22.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
23. 23.True or false: to change only one thing is poor testing. (a) False (b) True
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
25. 25.True or false: to repeat each test is poor testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 430 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to test it only once is poor testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) repeat each test (d) test it only once
29. 29.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) repeat each test (d) use a new load each time
30. 30.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
31. 31.True or false: to hide a failed test is good testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) use a new load each time
33. 33.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 170 g, 100 g and 240 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
36. 36.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
37. 37.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 200 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 A paper bridge was tested three times. It held 360 g, 330 g and 360 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?

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