Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 670 · 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) none (b) two (c) one (d) all of them
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change only one thing (d) repeat each test
3. 3.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
4. 4.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
5. 5.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) measure the same way (d) use a new load each time
7. 7.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
8. 8.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
9. 9.True or false: to use the same load is good testing. (a) True (b) False
10. 10.True or false: to repeat each test is poor testing. (a) True (b) False
11. 11.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) test it only once (d) hide a failed test
13. 13.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) skip writing results (d) guess, do not measure
14. 14.True or false: to change lots at once is good testing. (a) False (b) True
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
16. 16.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
18. 18.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) use the same load (d) record every result
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
20. 20.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
21. 21.True or false: to guess, do not measure is poor testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
23. 23.True or false: to measure the same way is good testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) choose and draw one
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 380 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change lots at once (d) repeat each test
29. 29.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) guess, do not measure
30. 30.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
31. 31.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) repeat each test (d) record every result
32. 32.True or false: to use the same load is poor testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use the same load (d) guess, do not measure
34. 34.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 300 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
37. 37.🧪 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 weakest? (a) design A (b) design B (c) design C
38. 38.True or false: to change only one thing is good testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 410 g. What is the mean (average) load it held, in grams?

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