Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 341 · 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.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
3. 3.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
5. 5.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
6. 6.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
8. 8.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
9. 9.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
10. 10.True or false: to use a new load each time is poor testing. (a) True (b) False
11. 11.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) guess, do not measure (d) record every result
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
14. 14.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design B (b) design A (c) design C
17. 17.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
19. 19.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use the same load (d) test it only once
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
21. 21.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 280 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
23. 23.True or false: to change only one thing is good testing. (a) True (b) False
24. 24.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
25. 25.True or false: to repeat each test is good testing. (a) True (b) False
26. 26.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
27. 27.True or false: to hide a failed test is poor testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use a new load each time (d) measure the same way
29. 29.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 360 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
32. 32.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
33. 33.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
34. 34.True or false: to use the same load is good testing. (a) True (b) False
35. 35.🧪 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
36. 36.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
37. 37.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
38. 38.True or false: to record every result is poor testing. (a) False (b) True
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) strengthen the weak part

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