Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 404 · 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: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
2. 2.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
3. 3.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
4. 4.🔢 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
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
6. 6.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
7. 7.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
9. 9.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the weakest? (a) design A (b) design C (c) design B
11. 11.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
12. 12.True or false: to skip writing results is poor testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 230 g. What is the mean (average) load it held, in grams?
14. 14.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
15. 15.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
16. 16.True or false: to measure the same way is poor testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 420 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
19. 19.True or false: to record every result is poor testing. (a) True (b) False
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) load it with coins
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
22. 22.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) guess, do not measure
23. 23.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) use a new load each time (d) test it only once
24. 24.True or false: to hide a failed test is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
27. 27.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
28. 28.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) repeat each test (d) skip writing results
29. 29.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
30. 30.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
31. 31.True or false: to measure the same way is good testing. (a) False (b) True
32. 32.True or false: to change only one thing is good testing. (a) False (b) True
33. 33.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) measure the same way (d) change only one thing
35. 35.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
37. 37.True or false: to test it only once is poor testing. (a) False (b) True
38. 38.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
39. 39.True or false: to use a new load each time is poor testing. (a) False (b) True
40. 40.True or false: to test it only once is good testing. (a) False (b) True

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