Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 896 · 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) change only one thing (b) repeat each test (c) record every result (d) change lots at once
2. 2.True or false: to measure the same way is poor testing. (a) False (b) True
3. 3.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
5. 5.True or false: to change only one thing is good testing. (a) False (b) True
6. 6.True or false: to use the same load is poor testing. (a) False (b) True
7. 7.True or false: to record every result is poor testing. (a) False (b) True
8. 8.True or false: to skip writing results is good testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) use a new load each time (d) measure the same way
10. 10.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
11. 11.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
12. 12.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 140 g. What is the mean (average) load it held, in grams?
13. 13.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) build it with straws
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 110 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
17. 17.🧪 A paper bridge was tested three times. It held 260 g, 140 g and 80 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change only one thing (d) repeat each test
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
20. 20.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
21. 21.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
22. 22.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
23. 23.True or false: to use a new load each time is poor testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
26. 26.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
27. 27.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) change lots at once (d) use a new load each time
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) guess, do not measure (d) use a new load each time
30. 30.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) record every result (d) guess, do not measure
31. 31.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
33. 33.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
34. 34.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 290 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 180 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to repeat each test is poor testing. (a) True (b) False
38. 38.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
39. 39.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?

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