Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 461 · 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 repeat each test is poor testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) use a new load each time (d) skip writing results
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the strongest? (a) design C (b) design B (c) design A
4. 4.True or false: to record every result is good testing. (a) False (b) True
5. 5.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
6. 6.🔢 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) strengthen the weak part (d) load it with coins
7. 7.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
8. 8.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) guess, do not measure (d) record every result
10. 10.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
11. 11.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) read the challenge rules
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
13. 13.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) change lots at once
14. 14.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
15. 15.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
16. 16.True or false: to use a new load each time is poor testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) test it only once
18. 18.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) use a new load each time (d) record every result
19. 19.True or false: to hide a failed test is good testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) guess, do not measure (d) repeat each test
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
22. 22.🔢 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
23. 23.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
24. 24.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
26. 26.True or false: to change only one thing is good testing. (a) True (b) False
27. 27.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the strongest? (a) design C (b) design B (c) design A
29. 29.True or false: to measure the same way is poor testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 360 g, 290 g and 310 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to change lots at once is poor testing. (a) True (b) False
33. 33.True or false: to skip writing results is poor testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 240 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 360 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) load it with coins (d) read the challenge rules
38. 38.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
39. 39.True or false: to use the same load is good testing. (a) True (b) False
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design B (b) design C (c) design A

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