Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 205 · 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 hide a failed test? (a) good testing (b) poor testing
2. 2.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
3. 3.True or false: to repeat each test is poor testing. (a) True (b) False
4. 4.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
5. 5.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the strongest? (a) design B (b) design C (c) design A
7. 7.True or false: to hide a failed test is good testing. (a) True (b) False
8. 8.True or false: to use a new load each time is good testing. (a) False (b) True
9. 9.True or false: to measure the same way is good testing. (a) False (b) True
10. 10.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) choose and draw one
13. 13.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
14. 14.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 120 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) choose and draw one
16. 16.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
17. 17.🧪 A paper bridge was tested three times. It held 260 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to change lots at once is poor testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
20. 20.🧪 A paper bridge was tested three times. It held 410 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) guess, do not measure (d) measure the same way
23. 23.True or false: to measure the same way is poor testing. (a) False (b) True
24. 24.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
25. 25.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
26. 26.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) hide a failed test (d) measure the same way
27. 27.True or false: to test it only once is poor testing. (a) True (b) False
28. 28.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
30. 30.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 280 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to record every result is good testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
33. 33.True or false: to hide a failed test is poor testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 230 g, 170 g and 140 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
37. 37.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) skip writing results (d) record every result
38. 38.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) guess, do not measure (d) use the same load
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
40. 40.🧪 A paper bridge was tested three times. It held 420 g, 250 g and 350 g. What is the mean (average) load it held, in grams?

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