Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 80 · 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 330 g, 150 g and 270 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
3. 3.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
4. 4.🧪 A paper bridge was tested three times. It held 180 g, 160 g and 140 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to measure the same way is poor testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to skip writing results is good testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) choose and draw one
10. 10.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design B (b) design A (c) design C
12. 12.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) hide a failed test (d) repeat each test
14. 14.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use the same load (d) guess, do not measure
17. 17.True or false: to change only one thing is poor testing. (a) False (b) True
18. 18.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 280 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 370 g, 320 g and 270 g. What is the mean (average) load it held, in grams?
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) change lots at once (d) skip writing results
21. 21.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 140 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) sketch three ideas
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
28. 28.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
29. 29.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) record every result (d) test it only once
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
32. 32.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
35. 35.True or false: to test it only once is poor testing. (a) False (b) True
36. 36.True or false: to use the same load is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
38. 38.True or false: to record every result is good testing. (a) True (b) False
39. 39.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design B (b) design A (c) design C

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