Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 566 · 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.True or false: to change only one thing is poor testing. (a) False (b) True
2. 2.🧪 A paper bridge was tested three times. It held 170 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design C (b) design B (c) design A
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) change lots at once (d) change only one thing
5. 5.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
6. 6.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
7. 7.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
8. 8.True or false: to skip writing results is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the strongest? (a) design A (b) design B (c) design C
12. 12.True or false: to use a new load each time is good testing. (a) True (b) False
13. 13.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) use a new load each time (d) use the same load
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
16. 16.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 310 g. What is the mean (average) load it held, in grams?
17. 17.🔢 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
18. 18.True or false: to repeat each test is poor testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A
20. 20.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
24. 24.True or false: to record every result is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 270 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
26. 26.🧪 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
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) load it with coins
28. 28.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
29. 29.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins
30. 30.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) record every result
31. 31.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) guess, do not measure (d) hide a failed test
34. 34.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
35. 35.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
37. 37.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 120 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design C (b) design A (c) design B
40. 40.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing

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