Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 131 · 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.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to hide a failed test is good testing. (a) True (b) False
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) skip writing results (d) hide a failed test
5. 5.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) record every result (d) use a new load each time
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
7. 7.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
8. 8.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
9. 9.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
10. 10.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change only one thing (d) measure the same way
11. 11.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
12. 12.🧪 A paper bridge was tested three times. It held 330 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
15. 15.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use a new load each time (d) use the same load
17. 17.🧪 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 A (b) design B (c) design C
18. 18.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) guess, do not measure (d) change only one thing
19. 19.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
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.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
22. 22.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
23. 23.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
24. 24.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) change only one thing (d) measure the same way
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
26. 26.True or false: to guess, do not measure is poor testing. (a) False (b) True
27. 27.True or false: to repeat each test is good testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
29. 29.True or false: to use a new load each time is good testing. (a) False (b) True
30. 30.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
32. 32.True or false: to measure the same way is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
34. 34.True or false: to change lots at once is good testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
36. 36.🧪 A paper bridge was tested three times. It held 440 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 160 g, 70 g and 220 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
39. 39.True or false: to change only one thing is poor testing. (a) False (b) True
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 260 g. Which design was the strongest? (a) design B (b) design A (c) design C

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