Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 183 · 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.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
2. 2.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design B (b) design A (c) design C
4. 4.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 350 g. What is the mean (average) load it held, in grams?
5. 5.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 260 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to use a new load each time is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
9. 9.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
10. 10.True or false: to use the same load is poor testing. (a) False (b) True
11. 11.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
12. 12.True or false: to guess, do not measure is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
15. 15.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
16. 16.True or false: to change lots at once is poor testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
20. 20.True or false: to use a new load each time is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 410 g, 350 g and 290 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) record every result (d) hide a failed test
23. 23.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
26. 26.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
31. 31.True or false: to measure the same way is good testing. (a) True (b) False
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design B (b) design A (c) design C
33. 33.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 80 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to hide a failed test is poor testing. (a) False (b) True
35. 35.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 300 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to guess, do not measure is good testing. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) use the same load (d) change only one thing
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
39. 39.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A

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