Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 729 · 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 “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
2. 2.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
3. 3.True or false: to test it only once is poor testing. (a) False (b) True
4. 4.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) load it with coins
5. 5.🧪 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?
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) read the challenge rules
7. 7.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
8. 8.🧪 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 weakest? (a) design C (b) design B (c) design A
9. 9.True or false: to guess, do not measure is poor testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
11. 11.🧪 A paper bridge was tested three times. It held 410 g, 260 g and 380 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) use a new load each time (d) test it only once
13. 13.🧪 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
14. 14.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
15. 15.True or false: to change only one thing is poor testing. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) record every result
17. 17.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
18. 18.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
19. 19.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 380 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 350 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) load it with coins (d) read the challenge rules
22. 22.True or false: to use a new load each time is good testing. (a) True (b) False
23. 23.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
24. 24.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
25. 25.True or false: to hide a failed test is good testing. (a) True (b) False
26. 26.True or false: to use the same load is good testing. (a) True (b) False
27. 27.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
28. 28.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) guess, do not measure (d) skip writing results
30. 30.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) repeat each test (d) change lots at once
31. 31.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
32. 32.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
33. 33.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) change only one thing (d) use the same load
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.True or false: to measure the same way is good testing. (a) False (b) True
37. 37.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
39. 39.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) load it with coins
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins

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