Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 59 · 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, 230 g and 280 g. What is the mean (average) load it held, in grams?
2. 2.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
3. 3.🧪 A paper bridge was tested three times. It held 360 g, 320 g and 370 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) record every result (d) change only one thing
5. 5.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 70 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to repeat each test is good testing. (a) True (b) False
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
8. 8.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
10. 10.True or false: to guess, do not measure is poor testing. (a) True (b) False
11. 11.True or false: to measure the same way is good testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
13. 13.True or false: to guess, do not measure is good testing. (a) True (b) False
14. 14.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
15. 15.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 190 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
17. 17.🧪 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 A (c) design B
18. 18.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
19. 19.True or false: to repeat each test is poor testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) record every result (d) measure the same way
21. 21.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) load it with coins
22. 22.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
23. 23.🧪 A paper bridge was tested three times. It held 310 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design B (b) design C (c) design A
25. 25.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) change only one thing (d) test it only once
28. 28.🔢 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
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design C (c) design B
30. 30.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
31. 31.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) record every result
33. 33.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) use the same load (d) change lots at once
34. 34.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
37. 37.True or false: to record every result is good testing. (a) False (b) True
38. 38.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
39. 39.🧪 A paper bridge was tested three times. It held 360 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules

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