Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 441 · 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.🧪 A paper bridge was tested three times. It held 430 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
3. 3.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use the same load (d) change only one thing
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 240 g, 90 g and 150 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to skip writing results is poor testing. (a) False (b) True
7. 7.True or false: to change only one thing is good testing. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) record every result (d) measure the same way
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) test it only once (d) record every result
11. 11.🧪 A paper bridge was tested three times. It held 150 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
14. 14.True or false: to hide a failed test is good testing. (a) True (b) False
15. 15.🧪 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
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) use a new load each time
17. 17.🧪 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?
18. 18.🧪 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
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design C (b) design B (c) design A
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
21. 21.True or false: to record every result is poor testing. (a) True (b) False
22. 22.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
23. 23.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
24. 24.True or false: to change only one thing is poor testing. (a) True (b) False
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
30. 30.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
31. 31.True or false: to use the same load is good testing. (a) True (b) False
32. 32.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
37. 37.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
38. 38.True or false: to measure the same way is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) load it with coins
40. 40.True or false: to skip writing results is good testing. (a) False (b) True

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