Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 143 · 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 lots at once (b) use the same load (c) guess, do not measure (d) hide a failed test
2. 2.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
3. 3.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) repeat each test (d) test it only once
4. 4.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
5. 5.True or false: to measure the same way is good testing. (a) True (b) False
6. 6.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
8. 8.🧪 A paper bridge was tested three times. It held 370 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
9. 9.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
10. 10.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
11. 11.True or false: to record every result is poor testing. (a) False (b) True
12. 12.True or false: to change only one thing is poor testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design B (b) design C (c) design A
15. 15.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
16. 16.True or false: to use a new load each time is poor testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
18. 18.🧪 A paper bridge was tested three times. It held 290 g, 130 g and 180 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
22. 22.True or false: to change only one thing is good testing. (a) True (b) False
23. 23.🧪 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
24. 24.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) change lots at once (d) change only one thing
25. 25.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) choose and draw one
27. 27.True or false: to test it only once is good testing. (a) True (b) False
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
29. 29.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
30. 30.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) record every result (d) measure the same way
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.True or false: to repeat each test is good testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design B (b) design C (c) design A
34. 34.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 220 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
39. 39.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas

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