Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 249 · 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.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) change only one thing (d) measure the same way
2. 2.True or false: to record every result is good testing. (a) True (b) False
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the weakest? (a) design A (b) design B (c) design C
5. 5.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
6. 6.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 340 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 250 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) skip writing results (d) repeat each test
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) change only one thing (d) repeat each test
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) measure the same way (d) skip writing results
17. 17.True or false: to use the same load is good testing. (a) True (b) False
18. 18.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
19. 19.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
20. 20.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
21. 21.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
22. 22.True or false: to use a new load each time is good testing. (a) True (b) False
23. 23.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
24. 24.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) use a new load each time (d) repeat each test
25. 25.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
27. 27.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
28. 28.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 250 g, 70 g and 190 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) record every result (d) use a new load each time
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) hide a failed test (d) repeat each test
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) repeat each test (d) use a new load each time
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
34. 34.True or false: to measure the same way is good testing. (a) False (b) True
35. 35.🧪 A paper bridge was tested three times. It held 400 g, 220 g and 280 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 310 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) load it with coins
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
39. 39.🧪 A paper bridge was tested three times. It held 370 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
40. 40.🔢 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

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