Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 568 · 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 240 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.True or false: to test it only once is good testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
6. 6.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) guess, do not measure (d) hide a failed test
7. 7.🧪 A paper bridge was tested three times. It held 360 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 250 g, 230 g and 210 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) hide a failed test (d) change only one thing
13. 13.🧪 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
14. 14.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
15. 15.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.True or false: to measure the same way is good testing. (a) True (b) False
18. 18.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
19. 19.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) repeat each test (d) use the same load
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use the same load (d) test it only once
21. 21.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins
22. 22.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) test it only once (d) record every result
23. 23.True or false: to guess, do not measure is good testing. (a) True (b) False
24. 24.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 280 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) use the same load (d) record every result
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
28. 28.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
29. 29.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
30. 30.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design C (b) design B (c) design A
32. 32.True or false: to guess, do not measure is poor testing. (a) False (b) True
33. 33.True or false: to repeat each test is poor testing. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) repeat each test (d) use a new load each time
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design C (c) design A
37. 37.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
38. 38.🧪 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?
39. 39.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
40. 40.True or false: to hide a failed test is poor testing. (a) False (b) True

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