Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 181 · 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.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use a new load each time (d) measure the same way
3. 3.🔢 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) strengthen the weak part (d) load it with coins
4. 4.True or false: to record every result is good testing. (a) False (b) True
5. 5.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
6. 6.🔢 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) build it with straws
7. 7.True or false: to change only one thing is poor testing. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) record every result (d) use the same load
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
10. 10.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.True or false: to repeat each test is good testing. (a) False (b) True
13. 13.True or false: to use the same load is good testing. (a) False (b) True
14. 14.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
15. 15.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
16. 16.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to test it only once is good testing. (a) False (b) True
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
19. 19.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 330 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
21. 21.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
22. 22.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
26. 26.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) repeat each test (d) hide a failed test
28. 28.True or false: to measure the same way is good testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
30. 30.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to guess, do not measure is poor testing. (a) False (b) True
32. 32.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 340 g, 230 g and 270 g. What is the mean (average) load it held, in grams?
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 330 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins

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