Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 380 · 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.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
3. 3.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
4. 4.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
5. 5.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
6. 6.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
9. 9.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) change only one thing (d) use the same load
10. 10.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 240 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
12. 12.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
13. 13.True or false: to change only one thing is poor testing. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) repeat each test (d) change only one thing
15. 15.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) skip writing results (d) change lots at once
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
18. 18.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
21. 21.🧪 A paper bridge was tested three times. It held 370 g, 330 g and 320 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
23. 23.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
24. 24.True or false: to use a new load each time is poor testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one
28. 28.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
29. 29.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) use a new load each time (d) repeat each test
31. 31.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
32. 32.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) sketch three ideas
33. 33.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
34. 34.True or false: to repeat each test is poor testing. (a) False (b) True
35. 35.True or false: to change lots at once is good testing. (a) True (b) False
36. 36.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design B (b) design C (c) design A
40. 40.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 210 g. What is the mean (average) load it held, in grams?

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