Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 369 · 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.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
2. 2.True or false: to hide a failed test is poor testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
4. 4.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
5. 5.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) use a new load each time (d) measure the same way
7. 7.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
8. 8.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
9. 9.True or false: to change lots at once is good testing. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) change only one thing (d) repeat each test
11. 11.True or false: to use the same load is poor testing. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) skip writing results (d) repeat each test
13. 13.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
14. 14.🔢 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
15. 15.True or false: to change only one thing is poor testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
17. 17.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
18. 18.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
19. 19.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) repeat each test (d) measure the same way
20. 20.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) load it with coins
21. 21.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change lots at once (d) hide a failed test
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design C (b) design B (c) design A
23. 23.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
24. 24.🔢 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) strengthen the weak part (d) choose and draw one
25. 25.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
27. 27.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
29. 29.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
30. 30.True or false: to skip writing results is poor testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
32. 32.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
35. 35.True or false: to use the same load is good testing. (a) False (b) True
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) read the challenge rules
37. 37.True or false: to change only one thing is good testing. (a) False (b) True
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
39. 39.True or false: to use a new load each time is good testing. (a) False (b) True
40. 40.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two

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