Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 758 · 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.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
3. 3.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
4. 4.🧪 A paper bridge was tested three times. It held 370 g, 320 g and 360 g. What is the mean (average) load it held, in grams?
5. 5.🧪 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
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
7. 7.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use a new load each time (d) use the same load
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
10. 10.🧪 A paper bridge was tested three times. It held 430 g, 310 g and 280 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) record every result (d) test it only once
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
13. 13.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 100 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
15. 15.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
19. 19.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) guess, do not measure (d) hide a failed test
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
21. 21.True or false: to test it only once is good testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
23. 23.True or false: to change only one thing is poor testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 120 g. What is the mean (average) load it held, in grams?
25. 25.🧪 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 A (b) design C (c) design B
26. 26.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
27. 27.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
28. 28.True or false: to use a new load each time is poor testing. (a) False (b) True
29. 29.True or false: to hide a failed test is poor testing. (a) False (b) True
30. 30.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
31. 31.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
32. 32.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
33. 33.🔍 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
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
36. 36.True or false: to test it only once is poor testing. (a) True (b) False
37. 37.True or false: to hide a failed test is good testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 250 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) hide a failed test
40. 40.True or false: to use the same load is poor testing. (a) False (b) True

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