Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 327 · 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.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
2. 2.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 280 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
4. 4.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
5. 5.🧪 A paper bridge was tested three times. It held 400 g, 340 g and 280 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
7. 7.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) read the challenge rules
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design C (c) design B
10. 10.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
11. 11.True or false: to measure the same way is good testing. (a) False (b) True
12. 12.🧪 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 strongest? (a) design B (b) design C (c) design A
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use a new load each time (d) use the same load
14. 14.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
15. 15.True or false: to use a new load each time is poor testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) skip writing results (d) use the same load
17. 17.🧪 A paper bridge was tested three times. It held 340 g, 300 g and 380 g. What is the mean (average) load it held, in grams?
18. 18.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
19. 19.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
21. 21.True or false: to test it only once is good testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
23. 23.🧪 A paper bridge was tested three times. It held 180 g, 90 g and 240 g. What is the mean (average) load it held, in grams?
24. 24.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
26. 26.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
28. 28.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 270 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to skip writing results is poor testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
31. 31.True or false: to repeat each test is poor testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
35. 35.🧪 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 A (c) design B
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) measure the same way (d) use the same load
37. 37.True or false: to guess, do not measure is poor testing. (a) False (b) True
38. 38.🧪 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?
39. 39.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
40. 40.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?

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