Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 356 · 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) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
2. 2.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
3. 3.🧪 A paper bridge was tested three times. It held 410 g, 320 g and 290 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) change lots at once (d) use a new load each time
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design B (c) design A
6. 6.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
8. 8.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change lots at once (d) measure the same way
9. 9.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) change lots at once (d) hide a failed test
12. 12.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
13. 13.True or false: to record every result is poor testing. (a) False (b) True
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
15. 15.True or false: to measure the same way is poor testing. (a) True (b) False
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) measure the same way (d) hide a failed test
18. 18.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) repeat each test (d) change only one thing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
23. 23.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) build it with straws
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
28. 28.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) use a new load each time
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
30. 30.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
31. 31.🧪 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?
32. 32.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 330 g, 160 g and 260 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design C (b) design A (c) design B
36. 36.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 340 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
38. 38.🧪 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
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) record every result (d) change only one thing

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