Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 116 · 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 320 g, 240 g and 190 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) record every result (d) repeat each test
3. 3.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
4. 4.True or false: to hide a failed test is good testing. (a) False (b) True
5. 5.True or false: to record every result is poor testing. (a) True (b) False
6. 6.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
9. 9.🧪 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 weakest? (a) design A (b) design B (c) design C
10. 10.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) change only one thing
12. 12.🧪 A paper bridge was tested three times. It held 210 g, 80 g and 190 g. What is the mean (average) load it held, in grams?
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) measure the same way (d) guess, do not measure
14. 14.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
16. 16.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
18. 18.True or false: to test it only once is poor testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 330 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
22. 22.True or false: to repeat each test is poor testing. (a) True (b) False
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
25. 25.True or false: to change only one thing is poor testing. (a) False (b) True
26. 26.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
27. 27.True or false: to skip writing results is good testing. (a) True (b) False
28. 28.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 170 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to use the same load is poor testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
33. 33.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
35. 35.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
36. 36.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design B (b) design A (c) design C
38. 38.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C

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