Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 986 · 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.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
2. 2.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
4. 4.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
5. 5.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use a new load each time (d) hide a failed test
6. 6.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
7. 7.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
10. 10.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
13. 13.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
14. 14.True or false: to guess, do not measure is poor testing. (a) False (b) True
15. 15.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
17. 17.True or false: to use a new load each time is good testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
19. 19.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
20. 20.🧪 A paper bridge was tested three times. It held 440 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
21. 21.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) repeat each test (d) hide a failed test
22. 22.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to test it only once is good testing. (a) True (b) False
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 290 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) strengthen the weak part
29. 29.True or false: to repeat each test is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) change lots at once (d) test it only once
31. 31.True or false: to record every result is poor testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) use a new load each time
33. 33.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
34. 34.🧪 A paper bridge was tested three times. It held 160 g, 150 g and 140 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 330 g, 170 g and 310 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) load it with coins
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 270 g and 280 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
39. 39.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 310 g. What is the mean (average) load it held, in grams?

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