Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 229 · 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.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use a new load each time (d) test it only once
2. 2.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) skip writing results
3. 3.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
4. 4.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
5. 5.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) use the same load
6. 6.True or false: to hide a failed test is poor testing. (a) False (b) True
7. 7.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) hide a failed test (d) change only one thing
9. 9.True or false: to repeat each test is poor testing. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) test it only once
11. 11.True or false: to change lots at once is poor testing. (a) True (b) False
12. 12.True or false: to change lots at once is good testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
14. 14.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
15. 15.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
16. 16.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
17. 17.🧪 A paper bridge was tested three times. It held 250 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) choose and draw one
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 290 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 210 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
25. 25.🔢 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
26. 26.True or false: to repeat each test is good testing. (a) False (b) True
27. 27.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
29. 29.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
30. 30.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
31. 31.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
32. 32.True or false: to record every result is good testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) hide a failed test (d) change only one thing
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
36. 36.True or false: to use a new load each time is good testing. (a) True (b) False
37. 37.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
38. 38.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 170 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to test it only once is poor testing. (a) False (b) True
40. 40.True or false: to measure the same way is good testing. (a) True (b) False

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