Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 964 · 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.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
2. 2.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) test it only once
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
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 guess, do not measure? (a) good testing (b) poor testing
7. 7.True or false: to change only one thing is good testing. (a) True (b) False
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) sketch three ideas
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
10. 10.🧪 A paper bridge was tested three times. It held 240 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) measure the same way (d) guess, do not measure
12. 12.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
14. 14.🧪 A paper bridge was tested three times. It held 240 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
15. 15.🔢 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
16. 16.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
17. 17.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
18. 18.True or false: to repeat each test is good testing. (a) False (b) True
19. 19.True or false: to measure the same way is good testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) guess, do not measure (d) change only one thing
23. 23.True or false: to guess, do not measure is poor testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 140 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
26. 26.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
27. 27.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) guess, do not measure
28. 28.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
29. 29.True or false: to measure the same way is poor testing. (a) False (b) True
30. 30.True or false: to hide a failed test is poor testing. (a) False (b) True
31. 31.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design A (b) design B (c) design C
33. 33.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
35. 35.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
37. 37.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 360 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 260 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C

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