Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 271 · 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.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
3. 3.🧪 A paper bridge was tested three times. It held 240 g, 230 g and 250 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to measure the same way is poor testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 450 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to use a new load each time is good testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change only one thing (d) use the same load
9. 9.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) guess, do not measure (d) use the same load
10. 10.True or false: to change only one thing is good testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to test it only once is good testing. (a) True (b) False
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the weakest? (a) design C (b) design B (c) design A
15. 15.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
16. 16.True or false: to repeat each test is poor testing. (a) True (b) False
17. 17.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design B (b) design C (c) design A
19. 19.🧪 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
20. 20.True or false: to record every result is poor testing. (a) False (b) True
21. 21.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
22. 22.True or false: to repeat each test is good testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 270 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
26. 26.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 120 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) use the same load (d) measure the same way
28. 28.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
29. 29.True or false: to guess, do not measure is poor testing. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) change only one thing
31. 31.🧪 A paper bridge was tested three times. It held 360 g, 290 g and 400 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) choose and draw one
34. 34.🧪 A paper bridge was tested three times. It held 430 g, 290 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to guess, do not measure is good testing. (a) True (b) False
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
39. 39.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
40. 40.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two

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