Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 563 · 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) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
2. 2.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
3. 3.True or false: to guess, do not measure is good testing. (a) False (b) True
4. 4.True or false: to change lots at once is good testing. (a) False (b) True
5. 5.True or false: to use a new load each time is poor testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) use a new load each time (d) test it only once
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) skip writing results
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design A (c) design B
11. 11.True or false: to change only one thing is good testing. (a) False (b) True
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
15. 15.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) record every result (d) measure the same way
16. 16.True or false: to guess, do not measure is poor testing. (a) True (b) False
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design A (b) design B (c) design C
18. 18.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 420 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 200 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
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.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 110 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
25. 25.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
26. 26.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
27. 27.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 230 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
29. 29.🧪 A paper bridge was tested three times. It held 230 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
31. 31.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
32. 32.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) change only one thing (d) measure the same way
34. 34.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change only one thing (d) hide a failed test
35. 35.🧪 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?
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
37. 37.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?

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