Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 753 · 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 280 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) measure the same way (d) change only one thing
5. 5.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 190 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
8. 8.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
9. 9.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
11. 11.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
12. 12.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to test it only once is poor testing. (a) True (b) False
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 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) one (c) all of them (d) none
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) read the challenge rules
17. 17.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) sketch three ideas
19. 19.True or false: to repeat each test is good testing. (a) True (b) False
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 270 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
22. 22.True or false: to change lots at once is good testing. (a) False (b) True
23. 23.True or false: to repeat each test is poor testing. (a) True (b) False
24. 24.True or false: to change only one thing is good testing. (a) True (b) False
25. 25.🧪 A paper bridge was tested three times. It held 420 g, 300 g and 300 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) hide a failed test (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 350 g and design C held 400 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
31. 31.True or false: to guess, do not measure is good testing. (a) True (b) False
32. 32.True or false: to change only one thing is poor testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) build it with straws
34. 34.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 390 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to record every result is poor testing. (a) True (b) False
36. 36.True or false: to use a new load each time is good testing. (a) True (b) False
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) test it only once (d) use a new load each time
39. 39.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 410 g, 280 g and 330 g. What is the mean (average) load it held, in grams?

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